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FeaTures
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LT1630/LT1631 30MHz, 10V/s, Dual/Quad Rail-to-Rail Input and Output Precision Op Amps DescripTion
The LT(R)1630/LT1631 are dual/quad, rail-to-rail input and output op amps with a 30MHz gain-bandwidth product and a 10V/s slew rate. The LT1630/LT1631 have excellent DC precision over the full range of operation. Input offset voltage is typically less than 150V and the minimum open-loop gain of one million into a 10k load virtually eliminates all gain error. To maximize common mode rejection, the LT1630/LT1631 employ a patented trim technique for both input stages, one at the negative supply and the other at the positive supply, that gives a typical CMRR of 106dB over the full input range. The LT1630/LT1631 maintain their performance for supplies from 2.7V to 36V and are specified at 3V, 5V and 15V supplies. The inputs can be driven beyond the supplies without damage or phase reversal of the output. The output delivers load currents in excess of 35mA. The LT1630 is available in 8-pin PDIP and SO packages with the standard dual op amp pinout. The LT1631 features the standard quad op amp configuration and is available in a 14-pin plastic SO package. These devices can be used as plug-in replacements for many standard op amps to improve input/output range and performance.
Gain-Bandwidth Product: 30MHz Slew Rate: 10V/s Low Supply Current per Amplifier: 3.5mA Input Common Mode Range Includes Both Rails Output Swings Rail-to-Rail Input Offset Voltage, Rail-to-Rail: 525V Max Input Offset Current: 150nA Max Input Bias Current: 1000nA Max Open-Loop Gain: 1000V/mV Min Low Input Noise Voltage: 6nV/Hz Typ Low Distortion: -91dBc at 100kHz Wide Supply Range: 2.7V to 15V Large Output Drive Current: 35mA Min Dual in 8-Pin PDIP and SO Packages Quad in Narrow 14-Pin SO Package
applicaTions
n n n n n
Active Filters Rail-to-Rail Buffer Amplifiers Driving A/D Converters Low Voltage Signal Processing Battery-Powered Systems
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and C-Load is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners.
Typical applicaTion
Single Supply, 400kHz, 4th Order Butterworth Filter
10 0 -10 2.32k VIN 2.32k 6.65k 220pF 47pF 2.74k 2.74k 5.62k 470pF 22pF GAIN (dB) -20 -30 -40 -50 -60 -70
1630/31 TA01
Frequency Response
1/2 LT1630
VS/2
+
-
1/2 LT1630 VOUT
+
-
-80 -90 0.1k
VS = 3V, 0V VIN = 2.5VP-P 1k 10k 100k FREQUENCY (Hz) 1M 10M
1630/31 TA02
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LT1630/LT1631 absoluTe MaxiMuM raTings
(Note 1)
Total Supply Voltage (V+ to V-) ............................... 36V Input Current....................................................... 10mA Output Short-Circuit Duration (Note 2) ........ Continuous Operating Temperature Range C-Grade/I-Grade ................................. -40C to 85C H-Grade ............................................. -40C to 125C
Specified Temperature Range (Note 4) .......................... C-Grade/I-Grade ................................. -40C to 85C H-Grade ............................................. -40C to 125C Junction Temperature ......................................... 150C Storage Temperature Range .................. -65C to 150C Lead Temperature (Soldering, 10 sec)................... 300C
pin conFiguraTion
TOP VIEW TOP VIEW OUT A 1 -IN A 2 +IN A 3 V- 4 N8 PACKAGE 8-LEAD PDIP
A B
OUTA 1 8 7 6 5 V+ OUT B -IN B +IN B -IN A 2 +IN A 3 V+ 4 +IN B 5 -IN B 6 OUT B 7
B C A D
14 OUT D 13 -IN D 12 +IN D 11 V- 10 +IN C 9 8 -IN C OUT C
S8 PACKAGE 8-LEAD PLASTIC SO
TJMAX = 150C, JA = 130C/W (N8) TJMAX = 150C, JA = 190C/W (S8)
S PACKAGE 14-LEAD PLASTIC SO TJMAX = 150C, JA = 150C/W
orDer inForMaTion
LEAD FREE FINISH LT1630CN8#PBF LT1630CS8#PBF LT1630IN8#PBF LT1630IS8#PBF LT1630HS8#PBF LT1631CS#PBF LT1631IS#PBF TAPE AND REEL LT1630CN8#TRPBF LT1630CS8#TRPBF LT1630IN8#TRPBF LT1630IS8#TRPBF LT1630HS8#TRPBF LT1631CS#TRPBF LT1631IS#TRPBF PART MARKING LT1630CN8 1630 LT1630IN8 1630I 1630H LT1631CS LT1631IS PACKAGE DESCRIPTION 8-Lead PDIP 8-Lead Plastic SO 8-Lead PDIP 8-Lead Plastic SO 8-Lead Plastic SO 14-Lead Plastic SO 14-Lead Plastic SO TEMPERATURE RANGE -40C to 85C -40C to 85C -40C to 85C -40C to 85C -40C to 125C -40C to 85C -40C to 85C
Consult LTC Marketing for parts specified with wider operating temperature ranges. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
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LT1630/LT1631 elecTrical characTerisTics
otherwise noted.
SYMBOL VOS VOS IB IB PARAMETER Input Offset Voltage Input Offset Shift Input Bias Current Input Bias Current Shift Input Bias Current Match (Channel-to-Channel) IOS IOS en in CIN AVOL CMRR Input Offset Current Input Offset Current Shift Input Noise Voltage Input Noise Voltage Density Input Noise Current Density Input Capacitance Large-Signal Voltage Gain Common Mode Rejection Ratio CMRR Match (Channel-to-Channel) (Note 5) PSRR Power Supply Rejection Ratio PSRR Match (Channel-to-Channel) (Note 5) Minimum Supply Voltage (Note 9) VOL Output Voltage Swing Low (Note 6) VS = 5V, VO = 300mV to 4.7V, RL = 10k VS = 3V, VO = 300mV to 2.7V, RL = 10k VS = 5V, VCM = V- to V+ VS = 3V, VCM = V- to V+ VS = 5V, VCM = V- to V+ VS = 3V, VCM = V- to V+ VS = 2.7V to 12V, VCM = VO = 0.5V VS = 2.7V to 12V, VCM = VO = 0.5V VCM = VO = 0.5V No Load ISINK = 0.5mA ISINK = 25mA, VS = 5V ISINK = 20mA, VS = 3V No Load ISOURCE = 0.5mA ISOURCE = 20mA, VS = 5V ISOURCE = 15mA, VS = 3V VS = 5V VS = 3V f = 100kHz VS = 5V, AV = -1, RL = Open, VO = 4V VS = 3V, AV = -1, RL = Open VS = 5V, AV = 1, RL = 1k, 0.01%, VSTEP = 2V 20 15 15 4.6 4.2 500 400 79 75 72 67 87 80
TA = 25C, VS = 5V, 0V; VS = 3V, 0V; VCM = VOUT = half supply, unless
MIN TYP 150 150 150 200 0 -1000 540 -540 1080 25 25 20 20 40 300 6 0.9 5 3500 2000 90 86 96 88 105 107 2.6 14 31 600 500 15 42 900 680 41 30 3.5 30 9.2 8.5 520 4.4 2.7 30 60 1200 1000 40 80 1800 1400 MAX 525 525 525 950 1000 0 2000 300 300 150 150 300 UNITS V V V V nA nA nA nA nA nA nA nA nVP-P nV/Hz pA/Hz pF V/mV V/mV dB dB dB dB dB dB V mV mV mV mV mV mV mV mV mA mA mA MHz V/s V/s ns
CONDITIONS VCM = V+ VCM = V- VCM = V- to V+ = V-, V+ (Note 5) VCM = V+ VCM = V- VCM = V- to V+ VCM = V+ (Note 5) VCM = V- (Note 5) VCM = V+ VCM = V- VCM = V- to V+ 0.1Hz to 10Hz f = 1kHz f = 1kHz
Input Offset Voltage Match (Channel-to-Channel) VCM
VOH
Output Voltage Swing High (Note 6)
ISC IS GBW SR tS
Short-Circuit Current Supply Current per Amplifier Gain-Bandwidth Product (Note 7) Slew Rate (Note 8) Settling Time
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LT1630/LT1631 elecTrical characTerisTics
SYMBOL VOS VOS TC VOS IB IB PARAMETER Input Offset Voltage Input Offset Voltage Drift (Note 3) Input Offset Voltage Shift Input Offset Voltage Match (Channel-to-Channel) Input Bias Current Input Bias Current Shift Input Bias Current Match (Channel-to-Channel) IOS IOS AVOL CMRR Input Offset Current Input Offset Current Shift Large-Signal Voltage Gain Common Mode Rejection Ratio CMRR Match (Channel-to-Channel) (Note 5) PSRR Power Supply Rejection Ratio PSRR Match (Channel-to-Channel) (Note 5) Minimum Supply Voltage (Note 9) VOL Output Voltage Swing Low (Note 6)
The l denotes the specifications which apply over the full operating temperature range of 0C < TA < 70C. VS = 5V, 0V; VS = 3V, 0V; VCM = VOUT = half supply, unless otherwise noted.
CONDITIONS VCM = V+ - 0.1V VCM = V- + 0.2V VCM = V+ - 0.1V VCM = V- + 0.2V to V+ - 0.1V VCM = V- + 0.2V, V+ - 0.1V (Note 5) VCM = V+ - 0.1V VCM = V- + 0.2V VCM = V- + 0.2V to V+ - 0.1V VCM = V+ - 0.1V (Note 5) VCM = V- + 0.2V (Note 5) VCM = V+ - 0.1V VCM = V- + 0.2V VCM = V- + 0.2V to V+ - 0.1V VS = 5V, VO = 300mV to 4.7V, RL = 10k VS = 3V, VO = 300mV to 2.7V, RL = 10k VS = 5V, VCM = V- + 0.2V to V+ - 0.1V VS = 3V, VCM = V- + 0.2V to V+ - 0.1V VS = 5V, VCM = V- + 0.2V to V+ - 0.1V VS = 3V, VCM = V- + 0.2V to V+ - 0.1V VS = 3V to 12V, VCM = VO = 0.5V VS = 3V to 12V, VCM = VO = 0.5V VCM = VO = 0.5V No Load ISINK = 0.5mA ISINK = 25mA, VS = 5V ISINK = 20mA, VS = 3V No Load ISOURCE = 0.5mA ISOURCE = 15mA, VS = 5V ISOURCE = 10mA, VS = 3V VS = 5V VS = 3V f = 100kHz VS = 5V, AV = -1, RL = Open, VO = 4V VS = 3V, AV = -1, RL = Open
l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l
MIN
TYP 175 175 2.5 1 175 200
MAX 700 700 5.5 3.5 750 1200 1100 0 2200 340 340 170 170 340
UNITS V V V/C V/C V V nA nA nA nA nA nA nA nA V/mV V/mV dB dB dB dB dB dB
0 -1100
585 -585 1170 25 25 20 20 40
450 350 75 71 70 65 82 78
3500 2000 89 83 90 85 101 102 2.6 17 36 700 560 16 50 820 550 2.7 40 80 1400 1200 40 100 1600 1100
V mV mV mV mV mV mV mV mV mA mA
VOH
Output Voltage Swing High (Note 6)
ISC IS GBW SR
Short-Circuit Current Supply Current per Amplifier Gain-Bandwidth Product (Note 7) Slew Rate (Note 8)
18 13 14 4.2 3.9
36 25 4.0 28 8.3 7.7 5.1
mA MHz V/s V/s
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LT1630/LT1631 elecTrical characTerisTics
SYMBOL VOS VOS TC VOS IB IB PARAMETER Input Offset Voltage Input Offset Voltage Drift (Note 3) Input Offset Voltage Shift Input Offset Voltage Match (Channel-to-Channel) Input Bias Current Input Bias Current Shift Input Bias Current Match (Channel-to-Channel) IOS IOS AVOL CMRR Input Offset Current Input Offset Current Shift Large-Signal Voltage Gain Common Mode Rejection Ratio CMRR Match (Channel-to-Channel) (Note 5) PSRR Power Supply Rejection Ratio PSRR Match (Channel-to-Channel) (Note 5) Minimum Supply Voltage (Note 9) VOL Output Voltage Swing Low (Note 6)
The l denotes the specifications which apply over the full operating temperature range of -40C < TA < 85C. VS = 5V, 0V; VS = 3V, 0V; VCM = VOUT = half supply, unless otherwise noted. (Note 4)
CONDITIONS VCM = V+ - 0.1V VCM = V- + 0.2V VCM = V+ - 0.1V VCM = V- + 0.2V to V+ - 0.1V VCM = V- + 0.2V, V+ (Note 5) VCM = V+ - 0.1V VCM = V- + 0.2V VCM = V- + 0.2V to V+ - 0.1V VCM = V+ - 0.1V (Note 5) VCM = V- + 0.2V (Note 5) VCM = V+ - 0.1V VCM = V- + 0.2V VCM = V- + 0.2V to V+ - 0.1V VS = 5V, VO = 300mV to 4.7V, RL = 10k VS = 3V, VO = 300mV to 2.7V, RL = 10k VS = 5V, VCM = V- + 0.2V to V+ - 0.1V VS = 3V, VCM = V- + 0.2V to V+ - 0.1V VS = 5V, VCM = V- + 0.2V to V+ - 0.1V VS = 3V, VCM = V- + 0.2V to V+ - 0.1V VS = 3V to 12V, VCM = VO = 0.5V VS = 3V to 12V, VCM = VO = 0.5V VCM = VO = 0.5V No Load ISINK = 0.5mA ISINK = 25mA, VS = 5V ISINK = 20mA, VS = 3V No Load ISOURCE = 0.5mA ISOURCE = 15mA, VS = 5V ISOURCE = 10mA, VS = 3V VS = 5V VS = 3V f = 100kHz VS = 5V, AV = -1, RL = Open, VO = 4V VS = 3V, AV = -1, RL = Open
l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l
MIN
TYP 250 250 2.5 1 200 210
MAX 775 775 5.5 3.5 750 1500 1300 0 2600 390 390 195 195 390
UNITS V V V/C V/C V V nA nA nA nA nA nA nA nA V/mV V/mV dB dB dB dB dB dB
0 -1300
650 -650 1300 25 25 25 25 50
400 300 75 71 69 65 82 78
3500 1800 87 83 89 85 98 102 2.6 18 38 730 580 15 55 860 580 2.7 40 80 1500 1200 40 110 1700 1200
V mV mV mV mV mV mV mV mV mA mA
VOH
Output Voltage Swing High (Note 6)
ISC IS GBW SR
Short-Circuit Current Supply Current per Amplifier Gain-Bandwidth Product (Note 7) Slew Rate (Note 8)
17 12 14 3.5 3.3
34 24 4.1 28 7 6.5 5.2
mA MHz V/s V/s
16301fa
LT1630/LT1631 elecTrical characTerisTics
SYMBOL VOS VOS TC VOS IB IB PARAMETER Input Offset Voltage Input Offset Voltage Drift (Note 3) Input Offset Voltage Shift Input Offset Voltage Match (Channel-to-Channel) Input Bias Current Input Bias Current Shift Input Bias Current Match (Channel-to-Channel) IOS IOS AVOL CMRR Input Offset Current Input Offset Current Shift Large-Signal Voltage Gain Common Mode Rejection Ratio CMRR Match (Channel-to-Channel) (Note 5) PSRR Power Supply Rejection Ratio PSRR Match (Channel-to-Channel) (Note 5) Minimum Supply Voltage (Note 9) VOL Output Voltage Swing Low (Note 6)
The l denotes the specifications which apply over the full operating temperature range of -40C < TA < 125C. VS = 5V, 0V; VS = 3V, 0V; VCM = VOUT = half supply, unless otherwise noted. (Note 4)
CONDITIONS VCM = V+ - 0.1V VCM = V- + 0.2V VCM = V+ - 0.1V VCM = V- + 0.2V to V+ - 0.1V VCM = V- + 0.2V, V+ (Note 5) VCM = V+ - 0.1V VCM = V- + 0.2V VCM = V- + 0.2V to V+ - 0.1V VCM = V+ - 0.1V (Note 5) VCM = V- + 0.2V (Note 5) VCM = V+ - 0.1V VCM = V- + 0.2V VCM = V- + 0.2V to V+ - 0.1V VS = 5V, VO = 300mV to 4.7V, RL = 10k VS = 3V, VO = 300mV to 2.7V, RL = 10k VS = 5V, VCM = V- + 0.2V to V+ - 0.1V VS = 3V, VCM = V- + 0.2V to V+ - 0.1V VS = 5V, VCM = V- + 0.2V to V+ - 0.1V VS = 3V, VCM = V- + 0.2V to V+ - 0.1V VS = 3V to 12V, VCM = VO = 0.5V VS = 3V to 12V, VCM = VO = 0.5V VCM = VO = 0.5V No Load ISINK = 0.5mA ISINK = 25mA, VS = 5V ISINK = 20mA, VS = 3V No Load ISOURCE = 0.5mA ISOURCE = 15mA, VS = 5V ISOURCE = 10mA, VS = 3V VS = 5V VS = 3V f = 100kHz VS = 5V, AV = -1, RL = Open, VO = 4V VS = 3V, AV = -1, RL = Open
l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l
MIN
TYP 345 345 2.5 1 200 210
MAX 950 950 5.5 3.5 750 1500 1300 0 2600 390 390 195 195 390
UNITS V V V/C V/C V V nA nA nA nA nA nA nA nA V/mV V/mV dB dB dB dB dB dB
0 -1300
650 -650 1300 25 25 25 25 50
200 150 72 69 67 63 82 78
3100 1625 87 83 89 85 98 102 2.6 18 38 730 580 15 55 860 580 2.7 40 100 1600 1300 40 120 1800 1300
V mV mV mV mV mV mV mV mV mA mA
VOH
Output Voltage Swing High (Note 6)
ISC IS GBW SR
Short-Circuit Current Supply Current per Amplifier Gain-Bandwidth Product (Note 7) Slew Rate (Note 8)
17 12 13 3.5 3.3
34 24 4.1 28 7 6.5 5.6
mA MHz V/s V/s
16301fa
LT1630/LT1631 elecTrical characTerisTics
SYMBOL VOS VOS IB IB PARAMETER Input Offset Voltage Input Offset Voltage Shift Input Offset Voltage Match (Channel-to-Channel) Input Bias Current Input Bias Current Shift Input Bias Current Match (Channel-to-Channel) IOS IOS en in CIN AVOL Input Offset Current Input Offset Current Shift Input Noise Voltage Input Noise Voltage Density Input Noise Current Density Input Capacitance Large-Signal Voltage Gain Channel Separation CMRR PSRR VOL VOH ISC IS GBW SR tS Common Mode Rejection Ratio CMRR Match (Channel-to-Channel) (Note 5) Power Supply Rejection Ratio PSRR Match (Channel-to-Channel) (Note 5) Output Voltage Swing Low (Note 6)
TA = 25C, VS = 15V, VCM = 0V, VOUT = 0V, unless otherwise noted.
MIN TYP 220 220 150 200 0 -1100 550 -550 1100 20 20 20 20 40 300 6 0.9 3 1000 650 112 89 86 87 82 5000 3500 134 106 110 105 107 16 150 600 15 250 1200 35 70 4.1 5.0 30 10 1.2 35 300 1200 40 500 2400 MAX 1000 1000 1000 1500 1100 0 2200 300 300 150 150 300 UNITS V V V V nA nA nA nA nA nA nA nA nVP-P nV/Hz pA/Hz pF V/mV V/mV dB dB dB dB dB mV mV mV mV mV mV mA mA MHz V/s s
CONDITIONS VCM = V+ VCM = V- VCM = V- to V+ VCM = V-, V+ (Note 5) VCM = V+ VCM = V- VCM = V- to V+ VCM = V+ (Note 5) VCM = V- (Note 5) VCM = V+ VCM = V- VCM = V- to V+ 0.1Hz to 10Hz f = 1kHz f = 1kHz f = 100kHz VO = -14.5V to 14.5V, RL = 10k VO = -10V to 10V, RL = 2k VO = -10V to 10V, RL = 2k VCM VCM = V- to V+ = V- to V+
VS = 5V to 15V VS = 5V to 15V No Load ISINK = 5mA ISINK = 25mA No Load ISINK = 5mA ISINK = 25mA
Output Voltage Swing High (Note 6)
Short-Circuit Current Supply Current per Amplifier Gain-Bandwidth Product (Note 7) Slew Rate Settling Time f = 100kHz AV = -1, RL = Open, VO = 10V, Measure at VO = 5V 0.01%, VSTEP = 10V, AV = 1, RL = 1k
15 5
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LT1630/LT1631 elecTrical characTerisTics
SYMBOL VOS VOS TC VOS IB IB PARAMETER Input Offset Voltage Input Offset Voltage Drift (Note 3) Input Offset Voltage Shift Input Offset Voltage Match (Channel-to-Channel) Input Bias Current Input Bias Current Shift Input Bias Current Match (Channel-to-Channel) IOS IOS AVOL Input Offset Current Input Offset Current Shift Large-Signal Voltage Gain Channel Separation CMRR PSRR VOL VOH ISC IS GBW SR Common Mode Rejection Ratio CMRR Match (Channel-to-Channel) (Note 5) Power Supply Rejection Ratio PSRR Match (Channel-to-Channel) (Note 5) Output Voltage Swing Low (Note 6)
The l denotes the specifications which apply over the full operating temperature range of 0C < TA < 70C. VS = 15V, VCM = 0V, VOUT = 0V, unless otherwise noted.
CONDITIONS VCM = V+ - 0.1V VCM = V- + 0.2V VCM = V+ - 0.1V VCM = V- + 0.2V to V+ - 0.1V VCM = V- + 0.2V, V+ - 0.1V (Note 5) VCM = V+ - 0.1V VCM = V- + 0.2V VCM = V- + 0.2V to V+ - 0.1V VCM = V+ - 0.1V (Note 5) VCM = V- + 0.2V (Note 5) VCM = V+ - 0.1V VCM = V- + 0.2V VCM = V- + 0.2V to V+ - 0.1V VO = -14.5V to 14.5V, RL = 10k VO = -10V to 10V, RL = 2k VO = -10V to 10V, RL = 2k VCM = V- + 0.2V to V+ - 0.1V VCM = V- + 0.2V to V+ - 0.1V VS = 5V to 15V VS = 5V to 15V No Load ISINK = 5mA ISINK = 25mA No Load ISOURCE = 5mA ISOURCE = 25mA
l l l l l l l l l l l l l l l l l l l l l l l l l l l l l
MIN
TYP 300 300 4.5 1.5 180 300
MAX 1250 1250 7 4 1100 2000 1200 0 2400 350 350 175 175 350
UNITS V V V/C V/C V V nA nA nA nA nA nA nA nA V/mV V/mV dB dB dB dB dB
0 -1200
600 -600 1200 30 30 25 25 50
900 600 112 88 84 86 80
6000 4000 132 104 104 100 104 19 175 670 15 300 1400 45 350 1400 40 600 2800 5.6
mV mV mV mV mV mV mA mA MHz V/s
Output Voltage Swing High (Note 6)
Short-Circuit Current Supply Current per Amplifier Gain-Bandwidth Product (Note 7) Slew Rate f = 100kHz AV = -1, RL = Open, VO = 10V, Measured at VO = 5V
28 14 4.5
57 4.6 28 9
l l
16301fa
LT1630/LT1631 elecTrical characTerisTics
SYMBOL VOS VOS TC VOS IB IB PARAMETER Input Offset Voltage Input Offset Voltage Drift (Note 3) Input Offset Voltage Shift Input Offset Voltage Match (Channel-to-Channel) Input Bias Current Input Bias Current Shift Input Bias Current Match (Channel-to-Channel) IOS IOS AVOL Input Offset Current Input Offset Current Shift Large-Signal Voltage Gain Channel Separation CMRR PSRR VOL VOH ISC IS GBW SR Common Mode Rejection Ratio CMRR Match (Channel-to-Channel) (Note 5) Power Supply Rejection Ratio PSRR Match (Channel-to-Channel) (Note 5) Output Voltage Swing Low (Note 6)
The l denotes the specifications which apply over the full operating temperature range of -40C < TA < 85C. VS = 15V, VCM = 0V, VOUT = 0V, unless otherwise noted. (Note 4)
CONDITIONS VCM = V+ - 0.1V VCM = V- + 0.2V VCM = V+ - 0.1V VCM = V- + 0.2V to V+ - 0.1V VCM = V- + 0.2V, V+ - 0.1V (Note 5) VCM = V+ - 0.1V VCM = V- + 0.2V VCM = V- + 0.2V to V+ - 0.1V VCM = V+ - 0.1V (Note 5) VCM = V- + 0.2V (Note 5) VCM = V+ - 0.1V VCM = V- + 0.2V VCM = V- + 0.2V to V+ - 0.1V VO = -14.5V to 14.5V, RL = 10k VO = -10V to 10V, RL = 2k VO = -10V to 10V, RL = 2k VCM = V- + 0.2V to V+ - 0.1V VCM = V- + 0.2V to V+ - 0.1V VS = 5V to 15V VS = 5V to 15V No Load ISINK = 5mA ISINK = 25mA No Load ISOURCE = 5mA ISOURCE = 25mA
l l l l l l l l l l l l l l l l l l l l l l l l l l l l l
MIN
TYP 350 350 4.5 1.5 180 350
MAX 1400 1400 7 4 1200 2200 1400 0 2800 420 420 210 210 420
UNITS V V V/C V/C V V nA nA nA nA nA nA nA nA V/mV V/mV dB dB dB dB dB
0 -1400
690 -690 1380 30 30 30 30 60
700 400 112 87 84 84 80
6000 4000 132 104 104 100 100 22 180 700 15 300 1500 50 350 1400 40 600 3000 5.9
mV mV mV mV mV mV mA mA MHz V/s
Output Voltage Swing High (Note 6)
Short-Circuit Current Supply Current per Amplifier Gain-Bandwidth Product (Note 7) Slew Rate f = 100kHz AV = -1, RL = Open, VO = 10V, Measured at VO = 5V
27 14 4.2
54 4.8 27 8.5
l l
16301fa
LT1630/LT1631 elecTrical characTerisTics
SYMBOL VOS VOS TC VOS IB IB PARAMETER Input Offset Voltage Input Offset Voltage Drift (Note 3) Input Offset Voltage Shift Input Offset Voltage Match (Channel-to-Channel) Input Bias Current Input Bias Current Shift Input Bias Current Match (Channel-to-Channel) IOS IOS AVOL Input Offset Current Input Offset Current Shift Large-Signal Voltage Gain Channel Separation CMRR PSRR VOL VOH ISC IS GBW SR Common Mode Rejection Ratio CMRR Match (Channel-to-Channel) (Note 5) Power Supply Rejection Ratio PSRR Match (Channel-to-Channel) (Note 5) Output Voltage Swing Low (Note 6)
The l denotes the specifications which apply over the full operating temperature range of -40C < TA < 125C. VS = 15V, VCM = 0V, VOUT = 0V, unless otherwise noted. (Note 4)
CONDITIONS VCM = V+ - 0.1V VCM = V- + 0.2V VCM = V+ - 0.1V VCM = V- + 0.2V to V+ - 0.1V VCM = V- + 0.2V, V+ - 0.1V (Note 5) VCM = V+ - 0.1V VCM = V- + 0.2V VCM = V- + 0.2V to V+ - 0.1V VCM = V+ - 0.1V (Note 5) VCM = V- + 0.2V (Note 5) VCM = V+ - 0.1V VCM = V- + 0.2V VCM = V- + 0.2V to V+ - 0.1V VO = -14.5V to 14.5V, RL = 10k VO = -10V to 10V, RL = 2k VO = -10V to 10V, RL = 2k VCM = V- + 0.2V to V+ - 0.1V VCM = V- + 0.2V to V+ - 0.1V VS = 5V to 15V VS = 5V to 15V No Load ISINK = 5mA ISINK = 25mA No Load ISOURCE = 5mA ISOURCE = 25mA
l l l l l l l l l l l l l l l l l l l l l l l l l l l l l
MIN
TYP 525 525 4.5 1.5 220 350
MAX 1600 1600 7 4 1300 2200 1500 0 2800 460 460 210 210 420
UNITS V V V/C V/C V V nA nA nA nA nA nA nA nA V/mV V/mV dB dB dB dB dB
0 -1500
750 -750 1380 42 42 30 30 60
700 400 112 87 84 84 80
6000 4000 132 104 104 100 100 22 180 700 15 300 1500 60 400 1500 50 675 3300 6.4
mV mV mV mV mV mV mA mA MHz V/s
Output Voltage Swing High (Note 6)
Short-Circuit Current Supply Current per Amplifier Gain-Bandwidth Product (Note 7) Slew Rate f = 100kHz AV = -1, RL = Open, VO = 10V, Measured at VO = 5V
27 13 4.2
54 4.8 27 8.5
l l
Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: A heat sink may be required to keep the junction temperature below the absolute maximum rating when the output is shorted indefinitely. Note 3: This parameter is not 100% tested. Note 4: The LT1630C/LT1631C are guaranteed to meet specified performance from 0C to 70C. The LT1630C/LT1631C and are designed, characterized and expected to meet specified performance from -40C to 85C but are not tested or QA sampled at these temperatures. The LT1630I/LT1631I are guaranteed to meet specified performance from -40C to 85C. The LT1630H is guaranteed to meet specified performance from -40C to 125C.
Note 5: Matching parameters are the difference between amplifiers A and D and between B and C on the LT1631; between the two amplifiers on the LT1630. Note 6: Output voltage swings are measured between the output and power supply rails. Note 7: VS = 3V, VS = 15V GBW limit guaranteed by correlation to 5V tests. Note 8: VS = 3V, VS = 5V slew rate limit guaranteed by correlation to 15V tests. Note 9: Minimum supply voltage is guaranteed by testing the change of VOS to be less than 250V when the supply voltage is varied from 3V to 2.7V.
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0
LT1630/LT1631 Typical perForMance characTerisTics
VOS Distribution, VCM = 0V (PNP Stage)
50 VS = 5V, 0V VCM = 0V PERCENT OF UNITS (%) 50 VS = 5V, 0V VCM = 5V PERCENT OF UNITS (%)
VOS Distribution, VCM = 5V (NPN Stage)
50
VOS Shift for VCM = 0V to 5V
VS = 5V, 0V
40 PERCENT OF UNITS (%)
40
40
30
30
30
20
20
20
10
10
10
0 -500
-300 100 300 -100 INPUT OFFSET VOLTAGE (V)
500
1630/31 G32
0 -500
-300 100 300 -100 INPUT OFFSET VOLTAGE (V)
500
1630/31 G33
0 -500
-300 100 300 -100 INPUT OFFSET VOLTAGE (V)
500
1630/31 G34
Supply Current vs Supply Voltage
5.5 SUPPLY CURRENT PER AMPLIFIER (mA) SUPPLY CURRENT PER AMPLIFIER (mA) 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 0 4 8 12 16 20 24 28 TOTAL SUPPLY VOTAGE (V) 32 36
1630/31 G01
Supply Current vs Temperature
5.0 600 VS = 15V INPUT BIAS CURRENT (nA) 400 200 0 -200 -400 -600 -800 100 125
1630/31 G02
Input Bias Current vs Common Mode Voltage
VS = 5V, 0V
TA = 125C TA = 25C
4.5 4.0 3.5 3.0 2.5 2.0 1.5
VS = 5V, 0V
TA = -55C
TA = 125C TA = 25C TA = -55C -2 -1 0 2 3 4 5 1 COMMON MODE VOLTAGE (V) 6
1.0 25 50 75 -75 -50 -25 0 TEMPERATURE (C)
-1000
1630/31 G03
Input Bias Current vs Temperature
1.0 0.8 INPUT BIAS CURRENT (A) 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 VS = 15V VCM = -15V VS = 5V, 0V VCM = 0V VS = 5V, 0V VCM = 5V SATURATION VOLTAGE (V) VS = 15V VCM = 15V 1 10
Output Saturation Voltage vs Load Current (Output Low)
10 VS = 5V, 0V SATURATION VOLTAGE (V)
Output Saturation Voltage vs Load Current (Output High)
VS = 5V, 0V
1
TA = 125C 0.1 TA = 25C TA = -55C
TA = 125C 0.1 TA = 25C TA = -55C
-1.0 -50 -35 -20 -5 10 25 40 55 70 85 100 TEMPERATURE (C)
1630/31 G04
0.01 0.01
0.1 1 10 LOAD CURRENT (mA)
100
1630/31 G05
0.01 0.01
0.1 1 10 LOAD CURRENT (mA)
100
1630/31 G06
16301fa
LT1630/LT1631 Typical perForMance characTerisTics
Minimum Supply Voltage
300 CHANGE IN OFFSET VOLTAGE (V) 250 NOISE VOLTAGE (nV/Hz) 200 150 TA = 25C 100 50 0 TA = 125C TA = -55C 35 30 25 20 15 10 5 0 CURRENT NOISE (pA/Hz) VCM = 2.5V PNP ACTIVE VCM = 4.25V NPN ACTIVE
Noise Voltage Spectrum
VS = 5V, 0V 10 9 8 7 6 5 4 3 2 1 1 10 100 FREQUENCY (Hz) 1000
11630/31 G09
Current Noise Spectrum
VS = 5V, 0V
VCM = 4.25V NPN ACTIVE VCM = 2.5V PNP ACTIVE 1 10 100 FREQUENCY (Hz) 1000
1630/31 G10
1
4 2 3 TOTAL SUPPLY VOLTAGE (V)
5
1630/31 G07
0
0.1Hz to 10Hz Output Voltage Noise
80 VS =5V, 0V VCM = VS/2 VOLTAGE GAIN (dB) 70 60 50 40 30 20 10 0 -10 TIME (1s/DIV)
1630/31 G25
Gain and Phase vs Frequency
180 135 GAIN BANDWIDTH (MHz) PHASE 90 45 0 GAIN -45 -90 -135 RL = 1k VS = 3V, 0V VS = 15V 0.1 1 10 FREQUENCY (MHz) -180 -225 -270 100
1630/31 G11
Gain Bandwidth and Phase Margin vs Supply Voltage
50 45 40 35 30 25 20 15 10 5 0 0 5 15 20 25 10 TOTAL SUPPLY VOLTAGE (V) PHASE MARGIN GAIN BANDWIDTH VCM = VS/2 100 90 80 PHASE MARGIN (DEG) 70 60 50 40 30 20 10 0 30
OUTPUT VOLTAGE (200nV/DIV)
PHASE SHIFT (DEG)
-20 0.01
1630/31 G14
CMRR vs Frequency
120 110 100 90 80 70 60 50 40 30 20 1k 10k 100k 1M FREQUENCY (Hz) 10M
1630/31 G12
PSRR vs Frequency
100 POWER SUPPLY REJECTION RATIO (dB) 90 80 70 60 50 40 30 20 10 0 1k 10k 100k 1M FREQUENCY (Hz) 10M
1630/31 G13
Channel Separation vs Frequency
VS = 15V -40 -50 CHANNEL SEPARATION (dB) -60 -70 -80 -90 -100 -110 -120 -130 -140 10 100 1k 10k FREQUENCY (Hz) 100k 1M
COMMON MODE REJECTION RATIO (dB)
VS = 15V
POSITIVE SUPPLY
VS = 5V, 0V
NEGATIVE SUPPLY
1630/31 G15
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LT1630/LT1631 Typical perForMance characTerisTics
Capacitive Load Handling
60 50 OVERSHOOT (%) 40 30 20 10 0 VS = 5V, 0V AV = 1 RL = 1k SLEW RATE (V/s) 14 13 12 11 10 9 8 VOUT = 80% OF VS AV = -1 OUTPUT STEP (V) RISING EDGE
Slew Rate vs Supply Voltage
10 8 6 4 2 0 -2 -4 -6 -8 0 4 8 12 16 20 24 28 TOTAL SUPPLY VOLTAGE (V) 32 -10
Output Step vs Settling Time to 0.01%
VS = 15V NONINVERTING INVERTING
FALLING EDGE
NONINVERTING
INVERTING
1
10 100 CAPACITIVE LOAD (pF)
1000
1630/31 G16
0
0.25
1.00 0.50 0.75 SETTLING TIME (s)
1.25
1.50
1630/31 G17
1630/31 G18
Open-Loop Gain
20 15 INPUT VOLTAGE (V) 10 5 0 -5 -10 -15 -20 0 5 -20 -15 -10 -5 10 OUTPUT VOLTAGE (V) 15 20 RL = 1k VS = 15V 8 6 INPUT VOLTAGE (V) 4 2 0 -2 -4 -6 -8
Open-Loop Gain
200 VS = 5V, 0V 150 INPUT VOLTAGE (V) 100 50 0 -50
Open-Loop Gain
VS = 15V RL = 100
RL = 10k RL = 1k
RL = 10k
-100 -150
0
1
4 3 OUTPUT VOLTAGE (V)
2
5
6
-200
-5 -4 -3 -2 -1 0 1 2 3 4 OUTPUT VOLTAGE (V)
5
6
7
1630/31 G19
1630/31 G20
1630/31 G21
Warm-Up Drift vs Time
40 CHANGE IN OFFSET VOLTAGE (V) OUTPUT VOLTAGE SWING (VP-P) 0 -40 -80 S8 PACKAGE VS = 5V, 0V N8 PACKAGE VS = 5V, 0V 5
Maximum Undistorted Output Signal vs Frequency
1 VS = 5V, 0V AV = -1 VS = 5V, 0V AV = 1 THD + NOISE (%)
Total Harmonic Distortion + Noise vs Frequency
VIN = 2VP-P RL = 10k
4
0.1
LT1631CS VS = 5V, 0V
N8 PACKAGE VS = 15V S8 PACKAGE VS = 15V LT1631CS VS = 15V
3
0.01
2
VS = 3V, 0V AV = 1 VS = 5V, 0V AND 3V, 0V AV = -1 VS = 5V, 0V AV = 1 10 1 FREQUENCY (kHz) 100
163031 G23
-120 -160 -200
1
0.001
0
20
40 60 80 100 120 140 160 TIME AFTER POWER-UP (SEC)
1630/31 G22
0
1
10 100 FREQUENCY (kHz)
1000
1630/31 G24
0.0001 0.1
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LT1630/LT1631 Typical perForMance characTerisTics
Harmonic Distortion vs Frequency
0 VS = 5V, 0V AV = 1 VIN = 2VP-P RL = 150 RL = 1k
5V Small-Signal Response
5V Large-Signal Response
HARMONIC DISTORTION (dBc)
-20
-40 2ND 3RD 2ND 3RD VS = 5V, 0V AV = 1 RL = 1k 1000
1630/31 G30 163031 G26
-60
-80
-100 100
VS = 5V, 0V AV = 1 RL = 1k
163031 G27
200 500 FREQUENCY (kHz)
Harmonic Distortion vs Frequency
0 VS = 5V, 0V AV = -1 VIN = 2VP-P RL = 150 RL = 1k 2ND
15V Small-Signal Response
15V Large-Signal Response
HARMONIC DISTORTION (dBc)
-20
-40
-60
3RD 2ND 3RD
163031 G28 163031 G29
-80
-100 100
VS = 15V AV = 1 RL = 1k 1000
1630/31 G31
200 500 FREQUENCY (kHz)
VS = 15V AV = 1 RL = 1k
applicaTions inForMaTion
Rail-to-Rail Input and Output The LT1630/LT1631 are fully functional for an input and output signal range from the negative supply to the positive supply. Figure 1 shows a simplified schematic of the amplifier. The input stage consists of two differential amplifiers, a PNP stage Q1/Q2 and an NPN stage Q3/Q4 that are active over different ranges of input common mode voltage. The PNP differential input pair is active for input common mode voltages VCM between the negative supply to approximately 1.4V below the positive supply. As VCM moves closer toward the positive supply, the transistor Q5 will steer the tail current I1 to the current mirror Q6/Q7, activating the NPN differential pair and the PNP pair becomes inactive for the rest of the input common mode range up to the positive supply. The output is configured with a pair of complementary common emitter stages Q14/Q15 that enables the output to swing from rail to rail. These devices are fabricated on Linear Technology's proprietary complementary bipolar process to ensure similar DC and AC characteristics. Capacitors C1 and C2 form local feedback loops that lower the output impedance at high frequencies.
16301fa
LT1630/LT1631 applicaTions inForMaTion
V+ R3 R4 R5
+
+IN R6 225 R7 225 D5 D6 Q4 D1 Q5 VBIAS I1 Q11
Q12
Q13
Q15
+
I2 V- CC C2 OUT
D2 Q3
-IN
Q1 D3
Q2 BUFFER AND OUTPUT BIAS
Q9 D4 Q7 V
-
Q8
C1
Q6 R1 R2 Q14
1630/31 F01
Figure 1. LT1630 Simplified Schematic Diagram
Power Dissipation The LT1630/LT1631 amplifiers combine high speed and large output current drive in a small package. Because the amplifiers operate over a very wide supply range, it is possible to exceed the maximum junction temperature of 150C in plastic packages under certain conditions. Junction temperature, TJ, is calculated from the ambient temperature, TA, and power dissipation, PD, as follows: LT1630CN8: TJ = TA + (PD * 130C/W) LT1630CS8: TJ = TA + (PD * 190C/W) LT1631CS: TJ = TA + (PD * 150C/W) The power dissipation in the IC is the function of the supply voltage, output voltage and load resistance. For a given supply voltage, the worst-case power dissipation PDMAX occurs at the maximum supply current and when the output voltage is at half of either supply voltage (or the maximum swing if less than 1/2 supply voltage). Therefore PDMAX is given by: PDMAX = (VS * ISMAX) + (VS/2)2/RL
To ensure that the LT1630/LT1631 are used properly, calculate the worst-case power dissipation, get the thermal resistance for a chosen package and its maximum junction temperature to derive the maximum ambient temperature. Example: An LT1630CS8 operating on 15V supplies and driving a 500, the worst-case power dissipation per amplifier is given by: PDMAX = (30V * 4.75mA) + (15V - 7.5V)(7.5/500) = 0.143 + 0.113 = 0.256W If both amplifiers are loaded simultaneously, then the total power dissipation is 0.512W. The SO-8 package has a junction-to-ambient thermal resistance of 190C/W in still air. Therefore, the maximum ambient temperature that the part is allowed to operate is: TA = TJ - (PDMAX * 190C/W) TA = 150C - (0.512W * 190C/W) = 53C For a higher operating temperature, lower the supply voltage or use the DIP package part.
16301fa
LT1630/LT1631 applicaTions inForMaTion
Input Offset Voltage The offset voltage changes depending upon which input stage is active, and the maximum offset voltages are trimmed to less than 525V. To maintain the precision characteristics of the amplifier, the change of VOS over the entire input common mode range (CMRR) is guaranteed to be less than 525V on a single 5V supply. Input Bias Current The input bias current polarity depends on the input common mode voltage. When the PNP differential pair is active, the input bias currents flow out of the input pins. They flow in the opposite direction when the NPN input stage is active. The offset voltage error due to input bias currents can be minimized by equalizing the noninverting and inverting input source impedance. Output The outputs of the LT1630/LT1631 can deliver large load currents; the short-circuit current limit is 70mA. Take care to keep the junction temperature of the IC below the absolute maximum rating of 150C (refer to the Power Dissipation section). The output of these amplifiers have reverse-biased diodes to each supply. If the output is forced beyond either supply, unlimited current will flow through these diodes. If the current is transient and limited to several hundred mA, no damage to the part will occur. Overdrive Protection To prevent the output from reversing polarity when the input voltage exceeds the power supplies, two pairs of crossing diodes D1 to D4 are employed. When the input voltage exceeds either power supply by approximately 700mV, D1/D2 or D3/D4 will turn on, forcing the output to the proper polarity. For this phase reversal protection to work properly, the input current must be limited to less than 5mA. If the amplifier is to be severely overdriven, an external resistor should be used to limit the overdrive current. The LT1630/LT1631's input stages are protected against large differential input voltages by a pair of back-to-back diodes D5/D6. When a differential voltage of more than 0.7V is applied to the inputs, these diodes will turn on, preventing the emitter-base breakdown of the input transistors. The current in D5/D6 should be limited to less than 10mA. Internal 225 resistors R6 and R7 will limit the input current for differential input signals of 4.5V or less. For larger input levels, a resistor in series with either or both inputs should be used to limit the current. Worst-case differential input voltage usually occurs when the output is shorted to ground. In addition, the amplifier is protected against ESD strikes up to 3kV on all pins. Capacitive Load The LT1630/LT1631 are wideband amplifiers that can drive capacitive loads up to 200pF on 15V supplies in a unity-gain configuration. On a 3V supply, the capacitive load should be kept to less than 100pF When there is a . need to drive larger capacitive loads, a resistor of 20 to 50 should be connected between the output and the capacitive load. The feedback should still be taken from the output so that the resistor isolates the capacitive load to ensure stability. Feedback Components The low input bias currents of the LT1630/LT1631 make it possible to use the high value feedback resistors to set the gain. However, care must be taken to ensure that the pole formed by the feedback resistors and the total capacitance at the inverting input does not degrade stability. For instance, the LT1630/LT1631 in a noninverting gain of 2, set with two 20k resistors, will probably oscillate with 10pF total input capacitance (5pF input capacitance and 5pF board capacitance). The amplifier has a 5MHz crossing frequency and a 52 phase margin at 6dB of gain. The feedback resistors and the total input capacitance form a pole at 1.6MHz that induces a phase shift of 72 at 5MHz! The solution is simple: either lower the value of the resistors or add a feedback capacitor of 10pF or more.
16301fa
LT1630/LT1631 Typical applicaTions
Single Supply, 40dB Gain, 350kHz Instrumentation Amplifier An instrumentation amplifier with a rail-to-rail output swing, operating from a 3V supply can be constructed with the LT1630 as shown in Figure 2. The amplifier has a nominal gain of 100, which can be adjusted with resistor R5. The DC output level is set by the difference of the two inputs multiplied by the gain of 100. Common mode range can be calculated by the equations shown with Figure 2. For example, the common mode range is from 0.15V to 2.65V if the output is set at one half of the 3V supply. The common mode rejection is greater than 110dB at 100Hz when trimmed with resistor R1. The amplifier has a bandwidth of 355kHz as shown in Figure 3.
R2 2k R1 20k VS R3 2k R5 432 R4 20k
Tunable Q Notch Filter A single supply, tunable Q notch filter as shown in Figure 4 is built with LT1630 to maximize the output swing. The filter has a gain of 2, and the notch frequency (fO) is set by the values of R and C. The resistors R10 and R11 set up the DC level at the output. The Q factor can be adjusted by varying the value of R8. The higher value of R8 will decrease Q as depicted in Figure 5, because the output induces less of feedback to amplifier A2. The value of R7 should be equal or greater than R9 to prevent oscillation. If R8 is a short and R9 is larger than R7, then the positive feedback from the output will create phase inversion at the output of amplifier A2, which will lead to oscillation.
C 1000pF 5V R 1.62k R1 500
C1 2.2F VIN
+ -
1/2 LT1630 VIN-
1630/31 F02
5V R10 10k C2 4.7F R9 1k R11 10k
BW = 355kHz R4 R2 R3 + R2 A V = 1+ + = 100 R3 R1 R5 VIN+ - VIN
-
LOWER LIMIT COMMON MODE INPUT VOLTAGE 1.0 V R2 + 0.1V VCML = OUT 1.1 A V R5 UPPER LIMIT COMMON MODE INPUT VOLTAGE O 1.0 V R2 + ( VS - 0.15V ) VCMH = OUT 1.1 A V R5 R WHERE VS IS THE SUPPLY CURRENT
VOUT = (
) * AV
fO = 98kHz fO = 1 2RC
Figure 2. Single Supply, 40dB Gain Instrumentation Amplifier
50 40 30 VOLTAGE GAIN (dB) 20 10 0 -10 -20 -30 -40 -50 -60 -70 100 1k 10k 100k FREQUENCY (Hz) VS = 3V AV = 100 1M 10M
1630/31 F03
Figure 4. Tunable Q Notch Filter
40
DIFFERENTIAL INPUT GAIN (VOUT/VIN)(dB) 20 INCREASING R8 0 DECREASING R8
COMMON MODE INPUT
-20
-40 0 20 40 60 80 100 120 140 160 180 200 FREQUENCY (kHz) 13630/31 F05
Figure 3. Frequency Response
Figure 5. Frequency Response
16301fa
+
-
+
VIN+
-
1/2 LT1630 VOUT
OUT1
R 1.62k C R2 1k 1000pF
A1 1/2 LT1630
VOUT
+
-
A2 1/2 LT1630 R8 5k
VO(DC) = AV = 2
R6 R5 1k 1k C5 4.7F
R7 1k
1630/31 F04
(5V )(R11) = 2.5V
R11+ R10
LT1630/LT1631 package DescripTion
N8 Package 8-Lead PDIP (Narrow .300 Inch)
(Reference LTC DWG # 05-08-1510)
.130 (3.302 .005 0.127) .400* (10.160) MAX 8 7 6 5
.300 - .325 (7.620 - 8.255)
.045 - .065 (1.143 - 1.651)
.008 - .015 (0.203 - 0.381) +.035 .325 -.015 +0.889 8.255 -0.381 NOTE: 1. DIMENSIONS ARE
.065 (1.651) TYP
.255 (6.477 .120 (3.048) .020 MIN (0.508) MIN .018 .003 (0.457 0.076)
.015* 0.381)
1
2
3
4
N8 1002
.100 (2.54) BSC
INCHES MILLIMETERS *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH (0.254mm)
S8 Package 8-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1610)
.189 - .197 (4.801 - 5.004) NOTE 3 .010 - .020 45 (0.254 - 0.508) .008 - .010 (0.203 - 0.254) .016 - .050 (0.406 - 1.270)
NOTE: 1. DIMENSIONS IN
.053 - .069 (1.346 - 1.752)
0 - 8 TYP
8 .004 - .010 (0.101 - 0.254) .228 - .244 (5.791 - 6.197)
7
6
5
.050 BSC
.045 .005
INCHES (MILLIMETERS) 2. DRAWING NOT TO SCALE 3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm)
.014 - .019 (0.355 - 0.483) TYP
.050 (1.270) BSC
.150 - .157 (3.810 - 3.988) NOTE 3
.245 MIN
.160 .005
SO8 0303
1
2
3
4
.030 .005 TYP RECOMMENDED SOLDER PAD LAYOUT
S Package 14-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1610)
.337 - .344 (8.560 - 8.738) NOTE 3 14 13 12 11 10 9 8
.050 BSC N .245 MIN
.045 .005
N .160 .005 .228 - .244 (5.791 - 6.197) 1 2 3 N/2 N/2 .150 - .157 (3.810 - 3.988) NOTE 3
.030 .005 TYP
RECOMMENDED SOLDER PAD LAYOUT .010 - .020 45 (0.254 - 0.508) .053 - .069 (1.346 - 1.752)
0 - 8 TYP
1
2
3
4
5
6
7
.004 - .010 (0.101 - 0.254)
NOTE: 1. DIMENSIONS IN
.008 - .010 (0.203 - 0.254)
.016 - .050 (0.406 - 1.270)
.014 - .019 (0.355 - 0.483) TYP
.050 (1.270) BSC
INCHES (MILLIMETERS) 2. DRAWING NOT TO SCALE 3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm)
S14 0502
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LT1630/LT1631 revision hisTory
REV A DATE 2/2010 DESCRIPTION Changes to Absolute Maximum Ratings Updated Order Information Section Added H Grade Part Added H Grade Electrical Characteristics Tables PAGE NUMBER 2 2 2 6, 10
16301fa
Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
LT1630/LT1631 Typical applicaTion
RF Amplifier Control Biasing and DC Restoration Taking advantage of the rail-to-rail input and output, and the large output current capability of the LT1630, the circuit, shown in Figure 6, provides precise bias currents for the RF amplifiers and restores DC output level. To ensure optimum performance of an RF amplifier, its bias point must be accurate and stable over the operating temperature range. The op amp A1 combined with Q1, Q2, R1, R2 and R3 establishes two current sources of 21.5mA to bias RF1 and RF2 amplifiers. The current of Q1 is determined by the voltage across R2 over R1, which is replicated in Q2. These current sources are stable and precise over temperature and have a low dissipated power due to a low voltage drop between their terminals. The amplifier A2 is used to restore the DC level at the output. With a large output current of the LT1630, the output can be set at 1.5VDC on 5V supply and 50 load. This circuit has a 3dB bandwidth from 2MHz to 2GHz and a power gain of 25dB.
R2 453W 5V 5V R4 10 R1 10
C1 0.01F
+
R3 10k
C2 1500pF VIN L3 3.9H
HP-MSA0785
R5 50
Figure 6. RF Amplifier Control Biasing and DC Restoration
relaTeD parTs
PART NUMBER LT1211/LT1212 LT1213/LT1214 LT1215/LT1216 LT1498/LT1499 LT1632/LT1633 DESCRIPTON Dual/Quad 14MHz, 7V/s, Single Supply Precision Op Amps Dual/Quad 28MHz, 12V/s, Single Supply Precision Op Amps Dual/Quad 23MHz, 50V/s, Single Supply Precision Op Amps Dual/Quad 10MHz, 6V/s Rail-to-Rail Input and Output C-LoadTM Op Amps COMMENTS Input Common Mode Includes Ground, 275V VOS(MAX), 6V/C Max Drift, Max Supply Current 1.8mA per Op Amp Input Common Mode Includes Ground, 275V VOS(MAX), 6V/C Max Drift, Max Supply Current 3.5mA per Op Amp Input Common Mode Includes Ground, 450V VOS(MAX), 6V/C Max Drift, Max Supply Current 6.6mA per Op Amp High DC Accuracy, 475V VOS(MAX), 4V/C Max Drift, Max Supply Current 2.2mA per Amp
Dual/Quad 45MHz, 45V/s Rail-to-Rail Input and Output Op Amps High DC Accuracy, 1.35mV VOS(MAX), 70mA Output Current, Max Supply Current 5.2mA per Amp
0 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 FAX: (408) 434-0507
www.linear.com
+
L1 220H RF1
-
A1 1/2 LT1630
Q1 2N3906
Q2 2N3906 C5 0.01F L2 220H HP-MSA0785 C4 1500pF VOUT L4 3.9H
+
+
C6 0.01F
C3 1500pF
RF2
+ -
A2 1/2 LT1630
1630/31 F06
16301fa LT 0210 REV A * PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 2009

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