View LT6011_294849.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

LT6011 Dual 135A, 14nV/Hz, Rail-to-Rail Output Precision Op Amp
FEATURES
s s s s s s s s s s s
DESCRIPTIO
75V Maximum Offset Voltage 900pA Maximum Input Bias Current 135A Supply Current per Amplifier Rail-to-Rail Output Swing 120dB Minimum Voltage Gain, VS = 15V 0.8V/C Maximum VOS Drift 14nV/Hz Input Noise Voltage 0.4V/Month Long-Term VOS Stability 2.7V to 18V Supply Voltage Operation Space Saving 3mm x 3mm DFN Package Operating Temperature Range: - 40C to 85C
The LT(R)6011 dual op amp combines low noise and high precision input performance with low power consumption and rail-to-rail output swing. Input offset voltage is trimmed to less than 75V. The low drift and excellent long-term stability guarantee a high accuracy over temperature and time. The 900pA maximum input bias current and 120dB minimum voltage gain further maintain this precision over operating conditions. The LT6011 works on any power supply voltage from 2.7V to 36V and draws only 135A of supply current on a 5V supply. The output voltage swings to within 40mV of either supply rail, making the amplifier a good choice for low voltage single supply operation. The LT6011 is fully specified at 5V and 15V supplies and from -40C to 85C. The device is available in SO-8 and space saving 3mm x 3mm DFN packages.
, LTC and LT are registered trademarks of Linear Technology Corporation. SoftSpan is a trademark of Linear Technology Corporation.
APPLICATIO S
s s s s
Thermocouple Amplifiers Precision Photo Diode Amplifiers Instrumentation Amplifiers Battery-Powered Precision Systems
TYPICAL APPLICATIO
V S+ LT1236-5 5
Low Power Programmable Output Range 16-Bit SoftSpanTM DAC
+
1/2 LT6011 7
6
-
C2 270pF
SUPPLY CURRENT 1.6mA TO 4mA DEPENDING ON CODE
5V/DIV 0V
2 R1 R1 5V 9 0.1F 14 13 12 11 10 CLR CS/LD SCK SDI SDO VCC
1 RCOM R2
16 15
3
4 C1 270pF VS+
R2 REF ROFS RFB
5V/DIV 0V
8
16-BIT DAC IOUT2 6 AGND LTC1592 GND 7 8 3
6011 TA01
+
-
IOUT1 5
2
1/2 LT6011 4 VS-
1
VOUT
U
20V Output Step Response
100s/DIV
6011 TA03
U
U
6011f
1
LT6011
ABSOLUTE
AXI U
RATI GS (Note 1)
Maximum Junction Temperature DD Package ..................................................... 125C SO-8 Package .................................................. 150C Storage Temperature Range DD Package ..................................... - 65C to 125C SO-8 Package .................................. - 65C to 150C Lead Temperature (Soldering, 10 sec).................. 300C
Total Supply Voltage (V+ to V-) .............................. 40V Differential Input Voltage (Note 2) .......................... 10V Input Voltage .................................................... V+ to V- Input Current (Note 2) ....................................... 10mA Output Short-Circuit Duration (Note 3) ........... Indefinite Operating Temperature Range (Note 4) .. - 40C to 85C Specified Temperature Range (Note 5) ... - 40C to 85C
PACKAGE/ORDER I FOR ATIO
TOP VIEW OUT A 1 -IN A 2 +IN A 3 V- 4 A B 8 7 6 5 V+ OUT B -IN B +IN B
ORDER PART NUMBER LT6011CDD LT6011IDD DD PART MARKING*
OUT A 1 -IN A 2
DD PACKAGE 8-LEAD (3mm x 3mm) PLASTIC DFN
TJMAX = 125C, JA = 160C/W UNDERSIDE METAL CONNECTED TO V-
LACD
*Temperature grades are identified by a label on the shipping container. Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
SYMBOL VOS PARAMETER Input Offset Voltage
The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25C. VS = 5V, 0V; VCM = 2.5V; RL to 0V; unless otherwise specified. (Note 5)
CONDITIONS LT6011S8 TA = 0C to 70C TA = -40C to 85C LT6011DD TA = 0C to 70C TA = -40C to 85C VOS/T IOS Input Offset Voltage Drift (Note 6) Input Offset Current TA = 0C to 70C TA = -40C to 85C IB Input Bias Current TA = 0C to 70C TA = -40C to 85C Input Noise Voltage en in RIN Input Noise Voltage Density Input Noise Current Density Input Resistance 0.1Hz to 10Hz f = 1kHz f = 1kHz Common Mode, VCM = 1V to 3.8V Differential 10
q q q q q q
LT6011S8 LT6011DD
2
U
U
W
WW
U
W
TOP VIEW 8 7 A +IN A 3 V- 4 B 5 6 -IN B +IN B V+ OUT B
ORDER PART NUMBER LT6011CS8 LT6011IS8 S8 PART MARKING 6011 6011I
S8 PACKAGE 8-LEAD PLASTIC SO TJMAX = 150C, JA = 190C/W
MIN
TYP 25
MAX 75 100 125 125 175 210 0.8 1.3 900 1200 1500 900 1200 1500
UNITS V V V V V V V/C V/C pA pA pA pA pA pA nVP-P nV/Hz pA/Hz G M
6011f
25
q q q q
0.2 0.2 150
150
400 14 0.1 120 20
LT6011
ELECTRICAL CHARACTERISTICS
SYMBOL CIN VCM CMRR PSRR AVOL PARAMETER Input Capacitance Input Voltage Range (Positive) Input Voltage Range (Negative) Common Mode Rejection Ratio Minimum Supply Voltage Power Supply Rejection Ratio Large-Signal Voltage Gain Channel Separation VOUT Maximum Output Swing (Positive, Referred to V +)
The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25C. VS = 5V, 0V; VCM = 2.5V; RL to 0V; unless otherwise specified. (Note 5)
CONDITIONS Guaranteed by CMRR Guaranteed by CMRR VCM = 1V to 3.8V Guaranteed by PSRR VS = 2.7V to 36V, VCM = 1/2VS RL = 10k, VOUT = 1V to 4V RL = 2k, VOUT = 1V to 4V VOUT = 1V to 4V No Load, 50mV Overdrive
q q q q q q q q q
MIN 3.8 107 112 300 250 110
TYP 4 4 0.7 135 2.4 135 2000 2000 140 35 120
MAX
UNITS pF V V dB V dB V/mV V/mV dB
1 2.7
55 65 170 220 55 65 225 275
mV mV mV mV mV mV mV mV mA mA mA mA V/s V/s V/s kHz kHz s s
ISOURCE = 1mA, 50mV Overdrive
q
Maximum Output Swing (Negative, Referred to 0V)
No Load, 50mV Overdrive
q
40 150
q
ISINK = 1mA, 50mV Overdrive ISC Output Short-Circuit Current (Note 3) VOUT = 0V, 1V Overdrive, Source
q
10 4 10 4 0.06 0.05 0.04 250 225
14 21 0.09
VOUT = 5V, -1V Overdrive, Sink
q
SR
Slew Rate
AV = -10, RF = 50k, RG = 5k TA = 0C to 70C TA = -40C to 85C f = 10kHz
q q q
GBW ts tr, tf VOS
Gain Bandwidth Product Settling Time Rise Time, Fall Time Offset Voltage Match (Note 7)
330 45 1 50 150 200 250 250 350 420 1800 2400 3000
AV = -1, 0.01%, VOUT = 1.5V to 3.5V AV = 1, 10% to 90%, 0.1V Step LT6011S8 TA = 0C to 70C TA = -40C to 85C LT6011DD TA = 0C to 70C TA = -40C to 85C
q q
V V V V V V pA pA pA dB dB
50
q q
IB
Input Bias Current Match (Note 7) TA = 0C to 70C TA = -40C to 85C
q q q q
250
CMRR PSRR IS
Common Mode Rejection Ratio Match (Note 7) Power Supply Rejection Ratio Match (Note 7) Supply Current per Amplifier TA = 0C to 70C TA = -40C to 85C
101 106
135 135 135 150 190 210
q q
A A A
6011f
3
LT6011
ELECTRICAL CHARACTERISTICS
SYMBOL VOS PARAMETER Input Offset Voltage
The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25C. VS = 15V, VCM = 0V, RL to 0V, unless otherwise specified. (Note 5)
CONDITIONS LT6011S8 TA = 0C to 70C TA = -40C to 85C LT6011DD TA = 0C to 70C TA = -40C to 85C
q q
MIN
TYP 25
MAX 150 175 200 200 250 275 0.8 1.3 900 1200 1500 900 1200 1500
UNITS V V V V V V V/C V/C pA pA pA pA pA pA nVP-P nV/Hz pA/Hz G M pF V dB
25
q q q q q q
VOS/T IOS
Input Offset Voltage Drift (Note 6) Input Offset Current
LT6011S8 LT6011DD TA = 0C to 70C TA = -40C to 85C
0.2 0.2 150
IB
Input Bias Current TA = 0C to 70C TA = -40C to 85C Input Noise Voltage 0.1Hz to 10Hz f = 1kHz f = 1kHz Common Mode, VCM = 13.5V Differential Guaranteed by CMRR VCM = -13.5V to 13.5V Guaranteed by PSRR VS = 1.35V to 18V RL = 10k, VOUT = -13.5V to 13.5V
q q q q q q q
150
400 13 0.1 50 400 20 4 13.5 115 112 1000 600 500 300 120 14 135 1.2 135 2000 1500 140 45
q
en in RIN CIN VCM CMRR PSRR AVOL
Input Noise Voltage Density Input Noise Current Density Input Resistance Input Capacitance Input Voltage Range Common Mode Rejection Ratio Minimum Supply Voltage Power Supply Rejection Ratio Large-Signal Voltage Gain
1.35
V dB V/mV V/mV V/mV V/mV dB
RL = 5k, VOUT = -13.5V to 13.5V
q
Channel Separation VOUT Maximum Output Swing (Positive, Referred to V +)
VOUT = -13.5V to 13.5V No Load, 50mV Overdrive ISOURCE = 1mA, 50mV Overdrive
q
80 100 195 240 80 100 250 300
mV mV mV mV mV mV mV mV mA mA mA mA V/s V/s V/s
140
q
Maximum Output Swing (Negative, Referred to V -)
No Load, 50mV Overdrive
q
45 150
q
ISINK = 1mA, 50mV Overdrive ISC Output Short-Circuit Current (Note 3) VOUT = 0V, 1V Overdrive (Source)
q
10 5 10 5 0.08 0.07 0.05
15 20 0.11
VOUT = 0V, -1V Overdrive (Sink)
q
SR
Slew Rate
AV = -10, RF = 50k, RG = 5k TA = 0C to 70C TA = -40C to 85C
q q
6011f
4
LT6011
ELECTRICAL CHARACTERISTICS
SYMBOL GBW ts tr, tf VOS PARAMETER Gain Bandwidth Product Settling Time Rise Time, Fall Time Offset Voltage Match (Note 7)
The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25C. VS = 15V, VCM = 0V, RL to 0V, unless otherwise specified. (Note 5)
CONDITIONS f = 10kHz
q
MIN 275 250
TYP 350 85 1 50
MAX
UNITS kHz kHz s s
AV = -1, 0.01%, VOUT = 0V to 10V AV = 1, 10% to 90%, 0.1V Step LT6011S8 TA = 0C to 70C TA = -40C to 85C LT6011DD TA = 0C to 70C TA = -40C to 85C
q q
300 350 400 400 500 550 1800 2400 3000
V V V V V V pA pA pA dB dB
50
q q
IB CMRR PSRR IS
Input Bias Current Match (Note 7) TA = 0C to 70C TA = -40C to 85C Common Mode Rejection Ratio Match (Note 7) Power Supply Rejection Ratio Match (Note 7) Supply Current per Amplifier TA = 0C to 70C TA = -40C to 85C
q q q q
250
109 106
135 135 260 330 380 400
q q
A A A
Note 1: Absolute Maximum Ratings are those beyond which the life if the device may be impaired. Note 2: The inputs are protected by back-to-back diodes and internal series resistors. If the differential input voltage exceeds 10V, the input current must be limited to less than 10mA. Note 3: A heat sink may be required to keep the junction temperature below absolute maximum ratings. Note 4: Both the LT6011C and LT6011I are guaranteed functional over the operating temperature range of - 40C to 85C. Note 5: The LT6011C is guaranteed to meet the specified performance from 0C to 70C and is designed, characterized and expected to meet
specified performance from - 40C to 85C but is not tested or QA sampled at these temperatures. The LT6011I is guaranteed to meet specified performance from -40C to 85C. Note 6: This parameter is not 100% tested. Note 7: Matching parameters are the difference between the two amplifiers. CMRR and PSRR are defined as follows: (1) CMRR and PSRR are measured in V/V for the individual amplifiers. (2) The difference between matching amplifiers is calculated in V/V. (3) The result is converted to dB.
6011f
5
LT6011 TYPICAL PERFOR A CE CHARACTERISTICS
Distribution of Input Offset Voltage
30 25 125 VS = 5V, 0V TA = 25C SO-8 PACKAGES 100 75 VS = 5V, 0V REPRESENTATIVE UNITS
OFFSET VOLTAGE (V)
PERCENT OF UNITS (%)
OFFSET VOLTAGE (V)
20 15 10 5 0 -90 -70 -50 -30 -10 10 30 50 70 INPUT OFFSET VOLTAGE (V)
Input Bias Current vs Temperature
1400 1200 VS = 5V, 0V TYPICAL PART
INPUT VOLTAGE NOISE DENSITY (nV/Hz)
INPUT BIAS CURRENT (pA)
INPUT BIAS CURRENT (pA)
1000 800 600 400 200 0 -200 -400 -50 -25 IB + 0 25 75 50 TEMPERATURE (C) 100 125 IB-
Total Input Noise vs Source Resistance
10 VS = 5V, 0V TA = 25C f = 1kHz NOISE VOLTAGE (0.2V/DIV)
TOTAL INPUT NOISE (V/Hz)
0.1 TOTAL NOISE 0.01 RESISTOR NOISE ONLY
0.001
0.0001 100
1k
10k 100k 1M 10M SOURCE RESISTANCE ()
100M
0
1
2
3
456 TIME (SEC)
7
8
9
10
NOISE VOLTAGE (0.2V/DIV)
1
6
UW
6011 G01 6011 G04 6011 G07
Input Offset Voltage vs Temperature
120 100 80
Offset Voltage vs Input Common Mode Voltage
VS = 15V TYPICAL PART
50 25 0 -25 -50 -75
TA = 85C 60 TA = -40C 40 20 0 TA = 25C
-100 90 -125 -50 -25 50 25 0 75 TEMPERATURE (C) 100 125
-20 -15
5 0 10 -10 -5 INPUT COMMON MODE VOLTAGE (V)
15
6011 G02
6011 G03
Input Bias Current vs Input Common Mode Voltage
100 VS = 15V TYPICAL PART 13.9V TA = 85C TA = -40C
en, in vs Frequency
VS = 15V TA = 25C 1000 INPUT CURRENT NOISE DENSITY (fA/Hz)
0
-100
CURRENT NOISE 100 100
-200 -14.2V -300
TA = 25C
VOLTAGE NOISE 10
-400 -15
10 -5 0 5 -10 COMMON MODE VOLTAGE (V)
15
1635 G05
1
10 100 FREQUENCY (Hz)
1000
6011 G06
0.1Hz to 10Hz Noise
VS = 15V TA = 25C
0.01Hz to 1Hz Noise
VS = 15V TA = 25C
0
10 20 30 40 50 60 70 80 90 100 TIME (SEC)
6011 G09
6011 G08
6011f
LT6011 TYPICAL PERFOR A CE CHARACTERISTICS
Output Voltage Swing vs Temperature
V+
OUTPUT VOLTAGE SWING (mV)
OUTPUT HIGH SATURATION VOLTAGE (V)
-20 -40 OUTPUT HIGH -60
TA = 85C TA = 25C 0.1 TA = -40C
OUTPUT LOW SATURATION VOLTAGE (V)
VS = 5V, 0V NO LOAD
60 40 20 V- - 50 - 25 0
OUTPUT LOW
75 50 25 TEMPERATURE (C)
Supply Current vs Supply Voltage
500 450 400 PER AMPLIFIER
CHANGE IN OFFSET VOLTAGE (V)
SUPPLY CURRENT (A)
THD + NOISE (%)
350 300 250 200 150 100 50 0 TA = 25C
TA = 85C
TA = -40C
0
2
4
6 8 10 12 14 16 18 20 SUPPLY VOLTAGE (V)
6011 G13
THD + Noise vs Frequency
10 VS = 15V VIN = 20VP-P TA = 25C 10
1
OUTPUT STEP (V)
THD + NOISE (%)
0.1
6 0.1% 0.01% 4
OUTPUT STEP (V)
0.01
AV = -1 AV = 1
0.001
0.0001 10
100 1k FREQUENCY (Hz)
UW
100
6011 G10
Output Saturation Voltage vs Load Current (Output High)
1 VS = 5V, 0V 1
Output Saturation Voltage vs Load Current (Output Low)
VS = 5V, 0V
TA = 85C TA = 25C 0.1 TA = -40C
125
0.01 0.01
0.1 1 LOAD CURRENT (mA)
10
6011 G11
0.01 0.01
0.1 1 LOAD CURRENT (mA)
10
6011 G12
Warm-Up Drift
3
10
THD + Noise vs Frequency
VS = 5V, 0V VOUT = 2VP-P TA = 25C AV = 1: RL = 10k AV = -1: RF = RG = 10k
1
15V 2
0.1
1
2.5V
0.01 AV = -1 0.001 AV = 1
0 30 60 90 120 TIME AFTER POWER-ON (SECONDS) 150
0.0001 10
100
1k 10k FREQUENCY (Hz)
100k
6011 G15
6011 G14
Settling Time vs Output Step
VS = 15V AV = 1 10
Settling Time vs Output Step
VS = 15V AV = -1
8
8
6 0.1% 0.01% 4
2
2
0 10k
6011 G16
0 0 10 20 30 40 50 60 70 SETTLING TIME (s) 80 90 0 10 20 30 40 50 60 70 SETTLING TIME (s) 80 90
6011 G17
6011 G18
6011f
7
LT6011 TYPICAL PERFOR A CE CHARACTERISTICS
Channel Separation vs Frequency
160 140
COMMON MODE REJECTION RATIO (dB)
140 120 100 80 60 40 20 0 1 10 100 1k 10k FREQUENCY (Hz) 100k 1M VS = 5V, 0V VS = 15V
POWER SUPPLY REJECTION RATIO (dB)
VS = 5V, 0V TA = 25C
CHANNEL SEPARATION (dB)
120 100 80 60 40 20 0 1 10 100 1k 10k FREQUENCY (Hz) 100k 1M
Output Impedance vs Frequency
1000 VS = 5V, 0V TA = 25C
OPEN-LOOP GAIN (dB)
100 OUTPUT IMPEDANCE ()
OPEN-LOOP GAIN (dB)
10 AV = 100 1 AV = 10 0.1 AV = 1 0.01 1 10 100 1k 10k FREQUENCY (Hz) 100k 1M
Gain vs Frequency, AV = 1
10 5 0 VS = 5V, 0V TA = 25C CL = 500pF CL = 50pF -5 -10 -15 -20 1k 10k 100k FREQUENCY (Hz) 1M
6011 G25
GAIN (dB)
GAIN (dB)
8
UW
6011 G19 6011 G22
CMRR vs Frequency
160 TA = 25C
PSRR vs Frequency
140 120 100 80 +PSRR 60 -PSRR 40 20 0 0.1 1 10 100 1k 10k 100k FREQUENCY (Hz) 1M VS = 5V, 0V TA = 25C
6011 G20
6011 G21
Open-Loop Gain vs Frequency
140 120 100 80 60 40 20 0 -20 -40 0.01 0.1 1 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz)
6011 G23
Gain and Phase vs Frequency
60 50 40 30 20 10 0 GAIN PHASE -200 -160 VS = 5V, 0V TA = 25C RL = 10k -80
VS = 5V, 0V TA = 25C RL = 10k
-120
PHASE SHIFT (DEG)
-10 - 240
- 20 -30 - 40 1k 10k 100k 1M FREQUENCY (Hz)
-280 10M
6011 G24
Gain vs Frequency, AV = -1
10 5 CL = 500pF 0 CL = 50pF -5 -10 -15 -20 1k 10k 100k FREQUENCY (Hz) 1M
6011 G26
VS = 5V, 0V TA = 25C
6011f
LT6011 TYPICAL PERFOR A CE CHARACTERISTICS
Small-Signal Transient Response Large-Signal Transient Response Rail-to-Rail Output Swing
5V
20mV/DIV
AV = 1
2s/DIV
APPLICATIO S I FOR ATIO
Preserving Input Precision
Preserving the input accuracy of the LT6011 requires that the applications circuit and PC board layout do not introduce errors comparable to or greater than the 25V typical offset of the amplifiers. Temperature differentials across the input connections can generate thermocouple voltages of 10's of microvolts so the connections to the input leads should be short, close together and away from heat dissipating components. Air currents across the board can also generate temperature differentials. The extremely low input bias currents (150pA typical) allow high accuracy to be maintained with high impedance sources and feedback resistors. The LT6011 low input bias currents are obtained by a cancellation circuit on-chip. This causes the resulting IB+ and IB- to be uncorrelated, as implied by the IOS specification being comparable to IB. Do not try to balance the input resistances in each input lead; instead keep the resistance at either input as low as possible for maximum accuracy. Leakage currents on the PC board can be higher than the LT6011's input bias current. For example, 10G of leakage between a 15V supply lead and an input lead will generate 1.5nA! Surround the input leads with a guard ring driven to the same potential as the input common mode to avoid excessive leakage in high impedance applications. Input Protection The LT6011 features on-chip back-to-back diodes between the input devices, along with 500 resistors in series with
U
W
UW
2V/DIV
0V
1V/DIV
0V
6011 G27
AV = -1 VS = 15V
50s/DIV
6011 G28
AV = -1 VS = 5V, 0V
100s/DIV
6011 G29
UU
either input. This internal protection limits the input current to approximately 10mA (the maximum allowed) for a 10V differential input voltage. Use additional external series resistors to limit the input current to 10mA in applications where differential inputs of more than 10V are expected. For example, a 1k resistor in series with each input provides protection against 30V differential voltage. Input Common Mode Range The LT6011 output is able to swing close to each power supply rail (rail-to-rail out), but the input stage is limited to operating between V - + 1V and V+ - 1.2V. Exceeding this common mode range will cause the gain to drop to zero, however, no phase reversal will occur. Total Input Noise The LT6011 amplifier contributes negligible noise to the system when driven by sensors (sources) with impedance between 20k and 1M. Throughout this range, total input noise is dominated by the 4kTRS noise of the source. If the source impedance is less than 20k, the input voltage noise of the amplifier starts to contribute with a minimum noise of 14nV/Hz for very low source impedance. If the source impedance is more than 1M, the input current noise of the amplifier, multiplied by this high impedance, starts to contribute and eventually dominate. Total input noise spectral density can be calculated as:
vn(TOTAL) = en2 + 4kTRS + (in RS )2
6011f
9
LT6011
APPLICATIO S I FOR ATIO
where en = 14nV/Hz , in = 0.1pA/Hz and RS is the total impedance at the input, including the source impedance. Capacitive Loads The LT6011 can drive capacitive loads up to 500pF in unity gain. The capacitive load driving capability increases as the amplifier is used in higher gain configurations. A small series resistance between the output and the load further increases the amount of capacitance that the amplifier can drive.
VREF RG
+ -
RF
VIN
INVERTING: AV = -RF/RG OP AMP INPUTS DO NOT MOVE, BUT ARE FIXED AT DC BIAS POINT VREF INPUT DOES NOT HAVE TO BE RAIL-TO-RAIL
Figure 1. Some Op Amp Configurations Do Not Require Rail-to-Rail Inputs to Achieve Rail-to-Rail Outputs
SI PLIFIED SCHE ATIC
V+ R3 Q7 Q6 Q8 Q5 Q3 Q4 Q21 B A Q22 C2 D3 D4 Q12 D5 Q14 C3 Q20 RC1 C1 Q18 Q19 R4 R5 R6
R1 500 -IN D1 +IN R2 500 Q1 Q2 D2
Q17 C B A Q11 Q15 Q9 Q10
V-
10
U
Rail-to-Rail Operation The LT6011 outputs can swing to within millivolts of either supply rail, but the inputs can not. However, for most op amp configurations, the inputs need to swing less than the outputs. Figure 1 shows the basic op amp configurations, lists what happens to the op amp inputs and specifies whether or not the op amp must have rail-to-rail inputs. Select a rail-to-rail input op amp only when really necessary, because the input precision specifications are usually inferior.
+ -
RF
6011 F01
W
W
UU
VIN
VIN
+ -
RG VREF NONINVERTING: AV = 1 + RF/RG INPUTS MOVE BY AS MUCH AS VIN, BUT THE OUTPUT MOVES MORE INPUT MAY NOT HAVE TO BE RAIL-TO-RAIL NONINVERTING: AV = 1 INPUTS MOVE BY AS MUCH AS OUTPUT INPUT MUST BE RAIL-TO-RAIL FOR OVERALL CIRCUIT RAIL-TO-RAIL PERFORMANCE
W
Q13 OUT
Q16
6011 SS
6011f
LT6011
PACKAGE DESCRIPTIO U
DD Package 8-Lead Plastic DFN (3mm x 3mm)
(Reference LTC DWG # 05-08-1698)
R = 0.115 TYP 5 0.675 0.05 0.38 0.10 8 3.00 0.10 (4 SIDES) PIN 1 PACKAGE TOP MARK OUTLINE
(DD8) DFN 0203
3.5 0.05 1.65 0.05 2.15 0.05 (2 SIDES)
1.65 0.10 (2 SIDES)
0.28 0.05 0.50 BSC 2.38 0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
0.200 REF
0.75 0.05
4 0.28 0.05 2.38 0.10 (2 SIDES)
1 0.50 BSC
0.00 - 0.05
BOTTOM VIEW--EXPOSED PAD
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
S8 Package 8-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1610)
.189 - .197 (4.801 - 5.004) NOTE 3 8 7 6 5
.045 .005 .050 BSC
.245 MIN
.160 .005 .228 - .244 (5.791 - 6.197)
.150 - .157 (3.810 - 3.988) NOTE 3
.030 .005 TYP RECOMMENDED SOLDER PAD LAYOUT .010 - .020 x 45 (0.254 - 0.508) .008 - .010 (0.203 - 0.254) 0- 8 TYP
1
2
3
4
.053 - .069 (1.346 - 1.752)
.004 - .010 (0.101 - 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)
.014 - .019 (0.355 - 0.483) TYP
.050 (1.270) BSC
SO8 0303
6011f
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.
11
LT6011
TYPICAL APPLICATIO U
Low Power Hall Sensor Amplifier
VS HALL ELEMENT ASAHI-KASEI HW-108A (RANK D) www.asahi-kasei.co.jp 6 10k OFFSET VS ADJUST 1 2 3
+ -
8 1
VS 4 LT1790-1.25 1, 2
1/2 LT6011 2
49.9k 400 x4 3 4 6 26.7k 1% 1k
7.87k 1%
49.9k
+
100k 1% VS = 3V TO 18V IS = ~600A VOUT = ~40mV/mT LT1782
-
-
1/2 LT6011 7
5
+
4
6011 TA02
RELATED PARTS
PART NUMBER LT1112 LT1880 LT1881 LT1884 DESCRIPTION Dual Low Power, Picoamp Input Precision Op Amp Rail-to-Rail Output, Picoamp Input Precision Op Amp Dual Rail-to-Rail Output, Picoamp Input Precision Op Amp Dual Rail-to-Rail Output, Picoamp Input Precision Op Amp COMMENTS 250pA Input Bias Current SOT-23 CLOAD Up to 1000pF 9.5nV/Hz Input Noise
6011f
12
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 q FAX: (408) 434-0507
q
LT/TP 0403 2K * PRINTED IN USA
www.linear.com
(c) LINEAR TECHNOLOGY CORPORATION 2003

▲Up To Search▲

Price & Availability of LT6011

	To Download LT6011 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .