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LTC2051/LTC2052 Dual/Quad Zero-Drift Operational Amplifiers
FEATURES
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DESCRIPTIO
Maximum Offset Voltage of 3V Maximum Offset Voltage Drift of 30nV/C Small Footprint, Low Profile MS8/GN16 Packages Available in 3mm x 3mm x 0.8mm DFN Package Single Supply Operation: 2.7V to 5.5V Noise: 1.5VP-P (0.01Hz to 10Hz Typ) Voltage Gain: 140dB (Typ) PSRR: 130dB (Typ) CMRR: 130dB (Typ) Supply Current: 0.75mA (Typ) per Amplifier Extended Common Mode Input Range Output Swings Rail-to-Rail Operating Temperature Range - 40C to 125C
The LTC(R)2051/LTC2052 are dual/quad zero-drift operational amplifiers available in the MS8 and SO-8/GN16 and S14 packages. For space limited applications, the LTC2051 is available in a 3mm x 3mm x 0.8mm dual fine pitch leadless package (DFN). They operate from a single 2.7V supply and support 5V applications. The current consumption is 750A per op amp. The LTC2051/LTC2052, despite their miniature size, feature uncompromising DC performance. The typical input offset voltage and offset drift are 0.5V and 10nV/C. The almost zero DC offset and drift are supported with a power supply rejection ratio (PSRR) and common mode rejection ratio (CMRR) of more than 130dB. The input common mode voltage ranges from the negative supply up to typically 1V from the positive supply. The LTC2051/LTC2052 also have an enhanced output stage capable of driving loads as low as 2k to both supply rails. The open-loop gain is typically 140dB. The LTC2051/ LTC2052 also feature a 1.5VP-P DC to 10Hz noise and a 3MHz gain-bandwidth product.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
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Thermocouple Amplifiers Electronic Scales Medical Instrumentation Strain Gauge Amplifiers High Resolution Data Acquisition DC Accurate RC Active Filters Low Side Current Sense
TYPICAL APPLICATIO
High Performance Low Cost Instrumentation Amplifier
2 R1 100 0.1% R2 10k 0.1% 5V R2 10k 0.1%
Input Referred Noise 0.1Hz to 10Hz
1
-
V
2
8 1
1/2 LTC2051HV
R1 100 0.1%
0
6
-
-VIN
3
+
VIN 5
1/2 LTC2051HV 4 -5V
7 AV = 101
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-1
+
-2 0 2 4 6 TIME (SEC) 8 10
2052 TA02
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LTC2051/LTC2052
ABSOLUTE
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RATI GS
Total Supply Voltage (V + to V -) LTC2051/LTC2052 .................................................. 7V LTC2051HV/LTC2052HV ....................................... 12V Input Voltage (Note 5) .......... (V + + 0.3V) to (V - - 0.3V) Output Short-Circuit Duration ......................... Indefinite
PACKAGE/ORDER I FOR ATIO
TOP VIEW OUT A 1 -IN A 2 +IN A 3 V- 4 8 7 6 5 V+ OUT B -IN B +IN B
OUT A -IN A +IN A V-
1 2 3 4
MS8 PACKAGE 8-LEAD PLASTIC MSOP
DD PACKAGE 8-LEAD (3mm x 3mm) PLASTIC DFN
TJMAX = 125C, JA = 250C/W
TJMAX = 125C, JA = 160C/W
ORDER PART NUMBER* LTC2051CDD LTC2051IDD LTC2051HVCDD LTC2051HVIDD
DD PART MARKING LAAN LAEL
ORDER PART NUMBER LTC2051CMS8 LTC2051IMS8 LTC2051HVCMS8 LTC2051HVIMS8 LTC2051HMS8 LTC2051HVHMS8
8 7 6 5 V+ OUT B -IN B +IN B
TOP VIEW OUT A 1 -IN A 2 +IN A 3 V- 4
S8 PACKAGE 8-LEAD PLASTIC SO TJMAX = 125C, JA = 190C/W
*The temperature grade (I or C) of the LTC2051's packaged in DFNs is indicated on the shipping container. Consult LTC Marketing for parts specified with wider operating temperature ranges.
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(Note 1)
Operating Temperature Range ............. - 40C to 125C Specified Temperature Range (Note 3) - 40C to 125C Storage Temperature Range ................ - 65C to 150C DD Package ...................................... - 65C to 125C Lead Temperature (Soldering, 10 sec)................. 300C
TOP VIEW 8 7 6 5 V+ OUT B -IN B +IN B OUT A -IN A +IN A V- SHDN A 1 2 3 4 5
TOP VIEW 10 9 8 7 6 V+ OUT B -IN B +IN B SHDN B
MS10 PACKAGE 10-LEAD PLASTIC MSOP TJMAX = 125C, JA = 250C/W
MS8 PART MARKING LTMN LTMP LTPJ LTPK LTVF LTVH
ORDER PART NUMBER LTC2051CMS10 LTC2051IMS10 LTC2051HVCMS10 LTC2051HVIMS10
MS10 PART MARKING LTMQ LTMR LTRB LTRC
ORDER PART NUMBER LTC2051CS8 LTC2051IS8 LTC2051HVCS8 LTC2051HVIS8 LTC2051HS8 LTC2051HVHS8
S8 PART MARKING 2051 2051I 2051HV 051HVI 2051H 051HVH
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LTC2051/LTC2052
PACKAGE/ORDER I FOR ATIO
TOP VIEW OUT A -IN A +IN A V+ +IN B -IN B OUT B NC 1 2 3 4 5 6 7 8 16 OUT D 15 -IN D 14 +IN D 13 V - 12 +IN C 11 -IN C 10 OUT C 9 NC
ORDER PART NUMBER LTC2052CGN LTC2052IGN LTC2052HVCGN LTC2052HVIGN LTC2052HGN LTC2052HVHGN GN PART MARKING 2052 2052I 2052HV 052HVI 2052H 052HVH
TOP VIEW OUT A 1 -IN A 2 +IN A 3 V+ 4 +IN B 5 -IN B 6 OUT B 7 14 OUT D 13 -IN D 12 +IN D 11 V - 10 +IN C 9 8 -IN C OUT C
GN PACKAGE 16-LEAD PLASTIC SSOP
TJMAX = 125C, JA = 110C/W
AVAILABLE OPTIO S
PART NUMBER LTC2051CDD LTC2051CS8 LT2051CMS8 LT2051CMS10 LTC2051HVCDD LT2051HVCS8 LTC2051HVCMS8 LTC2051HVCMS10 LTC2051IDD LTC2051IS8 LT2051IMS8 LT2051IMS10 LTC2051HVIDD LT2051HVIS8 LTC2051HVIMS8 LTC2051HVIMS10 LTC2051HS8 LT2051HMS8 LT2051HVHS8 LT2051HVHMS8 LTC2052CS LTC2052CGN LTC2052HVCS LTC2052HVCGN AMPS/PACKAGE 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 4 4 4 4 SPECIFIED TEMP RANGE 0C to 70C 0C to 70C 0C to 70C 0C to 70C 0C to 70C 0C to 70C 0C to 70C 0C to 70C -40C to 85C -40C to 85C -40C to 85C -40C to 85C -40C to 85C -40C to 85C -40C to 85C -40C to 85C -40C to 125C -40C to 125C -40C to 125C -40C to 125C 0C to 70C 0C to 70C 0C to 70C 0C to 70C SPECIFIED VOLTAGE 3V, 5V 3V, 5V 3V, 5V 3V, 5V 3V, 5V, 5V 3V, 5V, 5V 3V, 5V, 5V 3V, 5V, 5V 3V, 5V 3V, 5V 3V, 5V 3V, 5V 3V, 5V, 5V 3V, 5V, 5V 3V, 5V, 5V 3V, 5V, 5V 3V, 5V 3V, 5V 3V, 5V, 5V 3V, 5V, 5V 3V, 5V 3V, 5V 3V, 5V, 5V 3V, 5V, 5V PACKAGE DD SO-8 8-Lead MSOP 10-Lead MSOP DD SO-8 8-Lead MSOP 10-Lead MSOP DD SO-8 8-Lead MSOP 10-Lead MSOP DD SO-8 8-Lead MSOP 10-Lead MSOP SO-8 8-Lead MSOP SO-8 8-Lead MSOP 14-Lead SO 16-Lead SSOP 14-Lead SO 16-Lead SSOP
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ORDER PART NUMBER LTC2052CS LTC2052IS LTC2052HVCS LTC2052HVIS LTC2052HS LTC2052HVHS
S PACKAGE 14-LEAD PLASTIC SO
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TJMAX = 125C, JA = 110C/W
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LTC2051/LTC2052
AVAILABLE OPTIO S
PART NUMBER LTC2052IS LTC2052IGN LTC2052HVIS LTC2052HVIGN LTC2052HS LTC2052HGN LTC2052HVHS LTC2052HVHGN AMPS/PACKAGE 4 4 4 4 4 4 4 4 SPECIFIED TEMP RANGE -40C to 85C -40C to 85C -40C to 85C -40C to 85C -40C to 125C -40C to 125C -40C to 125C -40C to 125C SPECIFIED VOLTAGE 3V, 5V 3V, 5V 3V, 5V, 5V 3V, 5V, 5V 3V, 5V 3V, 5V 3V, 5V, 5V 3V, 5V, 5V PACKAGE 14-Lead SO 16-Lead SSOP 14-Lead SO 16-Lead SSOP 14-Lead SO 16-Lead SSOP 14-Lead SO 16-Lead SSOP
ELECTRICAL CHARACTERISTICS
(LTC2051/LTC2052, LTC2051HV/LTC2052HV) The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25C. VS = 3V, 5V unless otherwise noted. (Note 3)
LTC2051C/LTC2052C LTC2051I/LTC2052I MIN TYP MAX 0.5 3 0.01 0.03 50 8 50 100 25 75 150 100 150 150 200 1.5 115 130 110 130 120 130 115 130 120 130 115 130 120 140 115 140 125 140 120 140 V+ - 0.15 V+ - 0.06 V+ - 0.05 V+ - 0.02 2 15 2 15 2 3 0.75 1.0 0.85 1.2 2 5 4 10 LTC2051H/LTC2052H MIN TYP MAX 0.5 3 0.01 0.05 50 8 50 3000 25 75 3000 100 700 150 700 1.5 115 130 110 130 120 130 115 130 120 130 115 130 120 140 115 140 125 140 120 140 V+ - 0.15 V+ - 0.06 V+ - 0.05 V+ - 0.02 2 15 2 15 2 3 0.75 1.1 0.85 1.3 2 5 4 10
PARAMETER Input Offset Voltage Average Input Offset Drift Long-Term Offset Drift Input Bias Current (Note 4)
Input Offset Current (Note 4)
Input Noise Voltage Common Mode Rejection Ratio
Power Supply Rejection Ratio
q
Large-Signal Voltage Gain
Output Voltage Swing High Output Voltage Swing Low Slew Rate Gain Bandwidth Product Supply Current (Per Amplifier) Supply Current, Shutdown
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CONDITIONS (Note 2) (Note 2) VS = 3V VS = 3V VS = 5V VS = 5V VS = 3V VS = 3V VS = 5V VS = 5V RS = 100, DC to 10Hz VCM = GND to V + - 1.3, VS = 3V VCM = GND to V + - 1.3, VS = 5V
q
q q q q
q q
RL = 10k, VS = 3V
q
RL = 10k, VS = 5V
q
RL = 2k to GND RL = 10k to GND RL = 2k to GND RL = 10k to GND
q q q q
No Load, VS = 3V, VSHDN = VIH No Load, VS = 5V, VSHDN = VIH VSHDN = VIL, VS = 3V VSHDN = VIL, VS = 5V
q q q q
UNITS V V/C nV/mo pA pA pA pA pA pA pA pA VP-P dB dB dB dB dB dB dB dB dB dB V V mV mV V/s MHz mA mA A A
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LTC2051/LTC2052
ELECTRICAL CHARACTERISTICS
(LTC2051/LTC2052, LTC2051HV/LTC2052HV) The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25C. VS = 3V, 5V unless otherwise noted. (Note 3)
LTC2051C/LTC2052C LTC2051I/LTC2052I MIN TYP MAX V - + 0.5 V + - 0.5 -1 -3 -2 -5 7.5 LTC2051H/LTC2052H MIN TYP MAX V - + 0.5 V + - 0.5 -1 -3 -2 -5 7.5
PARAMETER Shutdown Pin Input Low Voltage (VIL) Shutdown Pin Input High Voltage (VIH) Shutdown Pin Input Current Internal Sampling Frequency
CONDITIONS
q q
VSHDN = VIL, VS = 3V VSHDN = VIL, VS = 5V
q q
UNITS V V A A kHz
(LTC2051HV/LTC2052HV) The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25C. VS = 5V unless otherwise noted. (Note 3)
LTC2051C/LTC2052C LTC2051I/LTC2052I MIN TYP MAX 1 3 0.01 0.03 50 90 150 300 300 500 1.5 125 130 120 130 120 130 115 130 125 140 120 140 4.75 4.92 4.90 4.98 2 3 1 1.5 15 30 V - + 0.5 V + - 0.5 -7 -15 7.5 LTC2051H/LTC2052H MIN TYP MAX UNITS 1 3 V 0.01 0.05 V/C 50 nV/mo 90 150 pA 3000 pA 300 pA 700 pA 1.5 VP-P 125 130 dB 120 130 dB 120 130 dB 115 130 dB 125 140 dB 120 140 dB 4.50 4.92 V 4.85 4.98 V 2 V/s 3 MHz 1 1.5 mA 15 30 A V - + 0.5 V V + - 0.5 V -7 - 15 A 7.5 kHz
PARAMETER Input Offset Voltage Average Input Offset Drift Long-Term Offset Drift Input Bias Current (Note 4) Input Offset Current (Note 4)
CONDITIONS (Note 2) (Note 2)
q
q q
Input Noise Voltage Common Mode Rejection Ratio Power Supply Rejection Ratio
RS = 100, DC to 10Hz VCM = V - to V + - 1.3
q q
Large-Signal Voltage Gain Maximum Output Voltage Swing Slew Rate Gain Bandwidth Product Supply Current (Per Amplifier) Supply Current, Shutdown Shutdown Pin Input Low Voltage (VIL) Shutdown Pin Input High Voltage (VIH) Shutdown Pin Input Current Internal Sampling Frequency
RL = 10k
q
RL = 2k to GND RL = 10k to GND
q q
No Load, VSHDN = VIH VSHDN = VIL
q q q q
VSHDN = VIL
q
Note 1: Absolute Maximum Ratings are those values beyond which the life of the device may be impaired. Note 2: These parameters are guaranteed by design. Thermocouple effects preclude measurements of these voltage levels during automated testing. Note 3: All versions of the LTC2051/LTC2052 are designed, characterized and expected to meet the extended temperature limits of - 40C and 125C. The LTC2051C/LTC2052C/LTC2051HVC/LTC2052HVC are guaranteed to meet the temperature limits of 0C and 70C. The LTC2051I/ LTC2052I/LTC2051HVI/LTC2052HVI are guaranteed to meet temperature limits of - 40C and 85C. The LTC2051H/LTC2051HVH and LTC2052H/ LTC2052HVH are guaranteed to meet the temperature limits of - 40C and 125C.
Note 4: The bias current measurement accuracy depends on the proximity of the negative supply bypass capacitors to the device under test. Because of this, only the bias current of channel B (LTC2051) and channels A and B (LTC2052) are 100% tested to the data sheet specifications. The bias currents of the remaining channels are 100% tested to relaxed limits, however, their values are guaranteed by design to meet the data sheet limits. Note 5: This parameter is guaranteed to meet specified performance through design and characterization. It has not been tested. Note 6: The JA specified for the DD package is with minimal PCB heat spreading metal. Using expanded metal area on all layers of a board reduces this value.
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LTC2051/LTC2052 TYPICAL PERFOR A CE CHARACTERISTICS
Common Mode Rejection Ratio vs Frequency
140 120 100 VS = 3V OR 5V VCM = 0.5VP-P
CMRR (dB)
80 60 40 20 0 1 10 100 1k FREQUENCY (Hz) 10k 100k
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CMRR (dB)
80 60 40 20 0 0 2 4 VCM (V)
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PSRR (dB)
Output Voltage Swing vs Load Resistance
6 5 RL TO GND VS = 5V OUTPUT VOLTAGE (V) 6 5 4 3 2 1
OUTPUT VOLTAGE (V)
OUTPUT SWING (V)
4 3 2 1 0 0 2 8 4 6 LOAD RESISTANCE (k) 10
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VS = 3V
Output Swing vs Output Current, 5V Supply
5 4 3 OUTPUT SWING (V) 2
GAIN (dB)
RL TO GND
GAIN 40
120 140
1 0 -1 -2 -3 -4 -5 0.01 1 0.1 OUTPUT CURRENT (mA) 10
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BIAS CURRENT (pA)
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DC CMRR vs Common Mode Input Range
140 120 100 VS = 3V VS = 5V
120 100
PSRR vs Frequency
VS = 10V
-PSRR 80 60 +PSRR 40 20 0
6
8
10
10
100
1k 10k FREQUENCY (Hz)
100k
1M
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Output Swing vs Output Current
5
Output Swing vs Load Resistance 5V
4 3 2 1 0 -1 -2 -3 -4 RL TO GND
VS = 5V
VS = 3V
0 0.01
0.1 1 OUTPUT CURRENT (mA)
10
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-5
0
2
6 8 4 LOAD RESISTANCE (k)
10
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Gain/Phase vs Frequency
100 PHASE 80 60 100
1k
PHASE (DEG)
Bias Current vs Temperature
80
10k
100
VS = 5V VS = 5V
20 160 0 V = 3V OR 5V -20 CS = 50pF L RL = 100k -40 1k 100 10k 100k FREQUENCY (Hz) 180 200 10M
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10
VS = 3V
1M
1 -50
50 0 TEMPERATURE (C)
100
125
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LTC2051/LTC2052 TYPICAL PERFOR A CE CHARACTERISTICS
Input Bias Current vs Input Common Mode Voltage
250
INPUT (V)
INPUT BIAS CURRENT (pA)
200
2V/DIV
100 VS = 5V 50 VS = 3V 0 -5 -3 1 3 -1 0 INPUT COMMON MODE VOLTAGE (V) 5 VS = 5V
OUTPUT (V)
150
Sampling Frequency vs Supply Voltage
10 10
SAMPLING FREQUENCY (kHz)
9
SAMPLING FREQUENCY (kHz)
8
7
6
5
3
5
Supply Current (Per Amplifier) vs Supply Voltage
1.2 1.0
SUPPLY CURRENT (mA)
SUPPLY CURRENT (mA)
0.8 0.6 0.4 0.2 0 2.5 4.5 6.5 8.5 SUPPLY VOLTAGE (V) 10.5
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UW
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Transient Response
0 - 0.1
Input Overload Recovery
1.5
0 AV = - 100 RL = 100k CL = 10pF VS = 3V 500s/DIV
2050 G12
AV = 1 RL = 10k CL = 100pF VS = 5V
1s/DIV
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Sampling Frequency vs Temperature
9
8
VS = 5V VS = 3V
7
6
7 SUPPLY VOLTAGE (V)
9
11
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5 -50
50 0 TEMPERATURE (C)
100
125
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Supply Current (Per Amplifier) vs Temperature
1.2 1.0 0.8 0.6 0.4 0.2 0 -50 VS = 5V VS = 5V
VS = 3V
50 0 TEMPERATURE (C)
100
125
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LTC2051/LTC2052
APPLICATIO S I FOR ATIO
Shutdown
The LTC2051 includes a shutdown pin in the 10-lead MSOP. When this active low pin is high or allowed to float, the device operates normally. When the shutdown pin is pulled low, the device enters shutdown mode; supply current drops to 3A, all clocking stops and the output assumes a high impedance state. Clock Feedthrough, Input Bias Current The LTC2051/LTC2052 use autozeroing circuitry to achieve an almost zero DC offset over temperature, common mode voltage and power supply voltage. The frequency of the clock used for autozeroing is typically 7.5kHz. The term clock feedthrough is broadly used to indicate visibility of this clock frequency in the op amp output spectrum. There are typically two types of clock feedthrough in autozeroed op amps like the LTC2051/LTC2052. The first form of clock feedthough is caused by the settling of the internal sampling capacitor and is input referred; that is, it is multiplied by the closed-loop gain of the op amp. This form of clock feedthrough is independent of the magnitude of the input source resistance or the magnitude of the gain setting resistors. The LTC2051/LTC2052 have a residue clock feedthrough of less than 1VRMS input referred at 7.5kHz. The second form of clock feedthrough is caused by the small amount of charge injection occurring during the sampling and holding of the op amps input offset voltage. The current spikes are multiplied by the impedance seen at the input terminals of the op amp, appearing at the output multiplied by the closed-loop gain of the op amp.
TYPICAL APPLICATIO
The dual chopper op amp buffers the inputs of A1 and corrects its offset voltage and offset voltage drift. With the RC values shown, the power-up warm-up time is typically 20 seconds. The step response of the composite amplifier does not present settling tails. The LT(R)1677 should be used when extremely low noise, VOS and VOS drift are
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To reduce this form of clock feedthrough, use smaller valued gain setting resistors and minimize the source resistance at the input. If the resistance seen at the inputs is less than 10k, this form of clock feedthrough is less than 1VRMS input referred at 7.5kHz, or less than the amount of residue clock feedthrough from the first form previously described. Placing a capacitor across the feedback resistor reduces either form of clock feedthrough by limiting the bandwidth of the closed-loop gain. Input bias current is defined as the DC current into the input pins of the op amp. The same current spikes that cause the second form of clock feedthrough previously described, when averaged, dominate the DC input bias current of the op amp below 70C. At temperatures above 70C, the leakage of the ESD protection diodes on the inputs increase the input bias currents of both inputs in the positive direction, while the current caused by the charge injection stays relatively constant. At elevated temperatures (above 85C) the leakage current begins to dominate and both the negative and positive pin's input bias currents are in the positive direction (into the pins). Input Pins, ESD Sensitivity ESD voltages above 700V on the input pins of the op amp will cause the input bias currents to increase (more DC current into the pins). At these voltages, it is possible to damage the device to a point where the input bias current exceeds the maximums specified in this data sheet. needed and the input source resistance is low. (For instance a 350 strain gauge bridge.) The LT1012 or equivalent should be used when low bias current (100pA) is also required in conjunction with DC to 10Hz low noise, low VOS and VOS drift. The measured typical input offset voltages are less than 1V.
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LTC2051/LTC2052
TYPICAL APPLICATIO
+
5 2
-
A1 LT1677 LT1012
R1 2.49k 750
R2 3.01k 57
PACKAGE DESCRIPTIO
3.00 0.10 (4 SIDES) PIN 1 TOP MARK
0.200 REF
0.75 0.05
NOTE: 1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WEED-1) 2. ALL DIMENSIONS ARE IN MILLIMETERS 3. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE 4. EXPOSED PAD SHALL BE SOLDER PLATED
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Obtaining Ultralow VOS Drift and Low Noise
+
1/2 LTC2051 6 7
-
1/2 LTC2051 1 5V
R4
3
-
R5 C2 C1
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+
R1
OUT
R2 R3
3
+ -
1 8 A1 6 OUT
2
R3 340k 250k
R4 10k 10k
R5 100k 100k
C1 0.01F 0.01F
C2 0.001F 0.001F
eIN (DC - 1Hz) 0.15VP-P 0.3VP-P
eIN (DC - 10Hz) 0.2VP-P 0.4VP-P
DD Package 8-Lead Plastic DFN (3mm x 3mm)
(Reference LTC DWG # 05-08-1698)
R = 0.115 TYP 5 0.38 0.10 8 0.675 0.05
1.65 0.10 (2 SIDES)
3.5 0.05 1.65 0.05 2.15 0.05 (2 SIDES) PACKAGE OUTLINE 4 0.28 0.05 2.38 0.10 (2 SIDES) 1 0.50 BSC 0.28 0.05 0.50 BSC 2.38 0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
(DD8) DFN 0203
0.00 - 0.05
BOTTOM VIEW--EXPOSED PAD
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LTC2051/LTC2052
PACKAGE DESCRIPTIO
0.254 (.010) GAUGE PLANE
DETAIL "A" 0 - 6 TYP
0.53 0.015 (.021 .006) DETAIL "A" 0.18 (.077) SEATING PLANE
0.22 - 0.38 (.009 - .015) TYP
NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS. INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX
0.254 (.010) GAUGE PLANE
DETAIL "A" 0 - 6 TYP
0.53 0.01 (.021 .006) DETAIL "A" 0.18 (.007) SEATING PLANE
NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS. INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX
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MS8 Package 8-Lead Plastic MSOP
(Reference LTC DWG # 05-08-1660)
1.10 (.043) MAX 0.86 (.034) REF 3.00 0.102 (.118 .004) (NOTE 3) 8 7 65 0.52 (.206) REF 0.889 0.127 (.035 .005) 0.65 (.0256) BSC
4.90 0.15 0.13 0.076 (1.93 .006) (.005 .003)
3.00 0.102 (.118 .004) NOTE 4
5.23 (.206) MIN
3.2 - 3.45 (.126 - .136)
1
23
4
0.42 0.04 (.0165 .0015) TYP
0.65 (.0256) BSC
MSOP (MS8) 0802
RECOMMENDED SOLDER PAD LAYOUT
MS10 Package 10-Lead Plastic MSOP
(Reference LTC DWG # 05-08-1661)
3.00 0.102 (.118 .004) (NOTE 3) 10 9 8 7 6 0.497 0.076 (.0196 .003) REF
0.889 0.127 (.035 .005)
4.90 0.15 (1.93 .006)
3.00 0.102 (.118 .004) NOTE 4
5.23 (.206) MIN
3.2 - 3.45 (.126 - .136)
12345 1.10 (.043) MAX 0.86 (.034) REF
0.50 0.305 0.038 (.0197) (.0120 .0015) BSC TYP RECOMMENDED SOLDER PAD LAYOUT
0.17 - 0.27 (.007 - .011) TYP
0.50 (.0197) BSC
0.13 0.076 (.005 .003)
MSOP (MS) 0802
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LTC2051/LTC2052
PACKAGE DESCRIPTIO
.010 - .020 x 45 (0.254 - 0.508) .008 - .010 (0.203 - 0.254)
.053 - .069 (1.346 - 1.752) 0- 8 TYP
.016 - .050 (0.406 - 1.270) NOTE: 1. DIMENSIONS IN
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
.015 .004 x 45 (0.38 0.10) .007 - .0098 (0.178 - 0.249) .016 - .050 (0.406 - 1.270) NOTE: 1. CONTROLLING DIMENSION: INCHES INCHES 2. DIMENSIONS ARE IN (MILLIMETERS) 0 - 8 TYP
.053 - .068 (1.351 - 1.727)
.008 - .012 (0.203 - 0.305)
3. DRAWING NOT TO SCALE *DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE **DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
S Package 14-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1610)
.045 .005 .050 BSC N 14 13 .337 - .344 (8.560 - 8.738) NOTE 3 12 11 10 9 8
.245 MIN
1 .030 .005 TYP
2
3
RECOMMENDED SOLDER PAD LAYOUT 1 .010 - .020 x 45 (0.254 - 0.508) 2 3 4 5 6 7
.008 - .010 (0.203 - 0.254)
.016 - .050 (0.406 - 1.270) NOTE: 1. DIMENSIONS IN
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)
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.
U
S8 Package 8-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1610)
.189 - .197 (4.801 - 5.004) NOTE 3 .004 - .010 (0.101 - 0.254) 8 7 6 5 .045 .005 .050 BSC .050 (1.270) BSC .228 - .244 (5.791 - 6.197) .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
GN Package 16-Lead Plastic SSOP (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1641)
.004 - .0098 (0.102 - 0.249) .189 - .196* (4.801 - 4.978) 16 15 14 13 12 11 10 9 .0250 (0.635) BSC .229 - .244 (5.817 - 6.198) .045 .005 .009 (0.229) REF .254 MIN .150 - .157** (3.810 - 3.988) .0165 .0015 1 23 4 56 7 8 .150 - .165
.0250 TYP
RECOMMENDED SOLDER PAD LAYOUT
GN16 (SSOP) 0502
N .160 .005 .228 - .244 (5.791 - 6.197) N/2 N/2 .150 - .157 (3.810 - 3.988) NOTE 3
.053 - .069 (1.346 - 1.752) 0 - 8 TYP
.004 - .010 (0.101 - 0.254)
.014 - .019 (0.355 - 0.483) TYP
.050 (1.270) BSC
S14 0502
20512fb
11
LTC2051/LTC2052
TYPICAL APPLICATIO
VIN
VOUT R2 NOISE OF EACH PARALLEL OP AMP =3 ; INPUT DC - 10Hz NOISE 0.8VP-P = R1 VIN 3
20512 F02
RELATED PARTS
PART NUMBER LTC1151 LTC1152 LTC2050 LTC2053 LTC6800 DESCRIPTION 15V Zero-Drift Op Amp Rail-to-Rail Input and Output Zero-Drift Op Amp Zero-Drift Op Amp in SOT-23 Zero-Drift Precision Instrumentation Amp Rail-to-Rail Input and Output Instrumentation Amp COMMENTS Dual/Quad Dual High Voltage Operation 18V Single Zero-Drift Op Amp with Rail-to-Rail Input and Output and Shutdown Single Supply Operation 2.7V to 5V, Shutdown MS8, 116dB CMRR, Two External Resistors Set Gain Low Cost, MS8, Two External Resistors Set Gain LTC1051/LTC1053 Precision Zero-Drift Op Amp
12
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 q FAX: (408) 434-0507
q
U
Paralleling Amplifiers to Improve Noise
R2 R1 2
-
1/4 LTC2052 1
R
3
+
R2
R 5V
R1
6
-
1/4 LTC2052 7
0.1F R 13
- +
4 14 VOUT
5
+
12 R2
1/4 LTC2052 11
0.1F R1 9
-
1/4 LTC2052 8
-5V R
10
+
20512fb LT/TP 0503 1K REV B * PRINTED IN USA
www.linear.com
(c) LINEAR TECHNOLOGY CORPORATION 2000

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