LT1101MH

LT1101_1 LINEAR | Alldatasheet

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■ Gain Error: 0.04% Max ■ Gain Nonlinearity: 0.0008% (8ppm) Max ■ Gain Drift: 4ppm/°C Max ■ Supply Current: 105µA Max ■ Offset Voltage: 160µV Max ■ Offset Voltage Drift: 0.4µV/°C Typ ■ Offset Current: 600pA Max ■ CMRR, G = 100: 100dB Min ■ 0.1Hz to 10Hz Noise: 0.9µVp-p Typ 2.3pAp-p Typ ■ Gain Bandwidth Product: 250kHz Min ■ Single or Dual Supply Operation ■ Surface Mount Package Available The LT 1101 establishes the following milestones: (1) It is the first micropower instrumentation amplifier, (2) It is the first single supply instrumentation amplifier, (3) It is the first instrumentation amplifier to feature fixed gains of 10 and/or 100 in low cost, space-saving 8-lead packages. The LT1101 is completely self-contained: no external gain setting resistor is required. The LT1101 combines its micropower operation (75 µA supply current) with a gain error of 0.008%, gain linearity of 3ppm, gain drift of 1ppm/°C. The output is guaranteed to drive a 2k load to ±10V with excellent gain accuracy. Other precision specifications are also outstanding: 50µV input offset voltage, 130pA input offset current, and low drift (0.4µV/°C and 0.7pA/°C). In addition, unlike other instrumentation amplifiers, there is no output offset voltage contribution to total error. A full set of specifications are provided with ±15V dual supplies and for single 5V supply operation. The LT1101 can be operated from a single lithium cell or two Ni-Cad batteries. Battery voltage can drop as low as 1.8V, yet the LT1101 still maintains its gain accuracy. In single supply applications, both input and output voltages swing to within a few millivolts of ground. The output sinks current while swinging to ground—no external, power consuming pull down resistors are needed. Precision, Micropower, Single Supply Instrumentation Amplifier (Fixed Gain = 10 or 100)

FEATURES

■ Differential Signal Amplification in Presence of Common Mode Voltage ■ Micropower Bridge Transducer Amplifier – Thermocouples – Strain Gauges – Thermistors ■ Differential Voltage-to-Current Converter ■ Transformer Coupled Amplifier ■ 4mA to 20mA Bridge Transmitter , LTC and LT are registered trademarks of Linear Technology Corporation. Gain Error Distribution GAIN ERROR (%) –0.04 PERCENT OF UNITS –0.02 0 0.02 0.04 LT1101 • TA02

930 UNITS

G = 100 R L = 50k TA = 25°C TYPICAL APPLICATIO U LT1101 • TA01 OUTPUT 90R 90R R AB R ≈ 9.2k R V+V– INVERTING INPUT GROUND PIN 1, OUTPUT AT PIN 8 G = 100: NO ADDITIONAL CONNECTIONS G = 10: SHORT PIN 2 TO PIN 1, SHORT PIN 7 TO PIN 8 SHORT TO 1, G = 10 N.C. G = 100 GROUND (REF) SHORT TO 8 G = 10 N.C. G = 100 NONINVERTING INPUT

ABSOLUTE AXI U RATI GSW WW U (Note 1) Operating Temperature Range LT1101AM/LT1101M (OBSOLETE) ... –55 °C to 125°C PACKAGE/ORDER I FOR ATIOUU W Consult LTC Marketing for parts specified with wider operating temperature ranges. LT1101AIN8 LT1101IN8 LT1101ACN8 LT1101CN8 LT1101SW LT1101ISW OBSOLETE PACKAGES Consider the N8 as an Alternate Source LT1101AMH LT1101MH LT1101ACH LT1101CH ORDER PART NUMBER ORDER PART NUMBER ORDER PART NUMBER OUT G = 10 REF G = 10 TOP VIEW NC GND (REF) NC –IN NC NC NC NC NC NC OUTPUT +IN R ≈ 9.2k 90R 90R RR SW PACKAGE 16-LEAD PLASTIC SO TJMAX = 150°C, θJA = 100°C/W 4 5 TOP VIEW –IN OUTPUT OUT G = 10 REF G = 10 GROUND (REF) +IN R ≈ 9.2k 90R 90R 9RRR TJMAX = 150°C, θJA = 130°C/W TOP VIEW OUT G = 10 OUTPUT REF G = 10 +IN 90R 90R RR V+–IN V– (CASE) GROUND (REF) H PACKAGE 8-LEAD TO-5 METAL CAN TJMAX = 150°C, θJA = 150°C/W, θJC = 45°C/W LT1101AMJ8 LT1101MJ8 LT1101ACJ8 LT1101CJ8 TJMAX = 150°C, θJA = 100°C/W N PACKAGE 8-LEAD PDIP J PACKAGE 8-LEAD CERDIP

ELECTRICAL CHARACTERISTICS

LT11O1AM/AI/AC LT1101M/I/C SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS GNL Gain Nonlinearity G = 100, R L = 50k 20 60 20 75 ppm G = 10, RL = 50k (Note 2) 3 7 3 8 ppm VOS Input Offset Voltage 50 160 60 220 µV LT1101SW 250 600 µV lOS Input Offset Current 0.13 0.60 0.15 0.90 nA IB Input Bias Current 6 8 6 10 nA IS Supply Current 75 105 78 120 µA VS = 5V, 0V, VCM = 0.1V, VREF(PIN 1) = 0.1V, G = 10 or 100, TA = 25°C, unless otherwise noted. (Note 4)

LT1101AM/AI/AC LT1101M/I/C SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS GE Gain Error G = 100, V O = ±10V, RL = 50k 0.008 0.040 0.009 0.060 % G = 100, VO = ±10V, RL = 2k 0.011 0.055 0.012 0.070 % G = 100, VO = ±10V, RL = 50k or 2k 0.008 0.040 0.009 0.060 % GNL Gain Nonlinearity G = 100, R L = 50k 7 16 8 20 ppm G = 100, RL = 2k 24 45 25 60 ppm G = 10, RL = 50k or 2k 3 8 3 9 ppm VOS Input Offset Voltage 50 160 60 220 µV LT1101SW 250 600 µV lOS Input Offset Current 0.13 0.60 0.15 0.90 nA IB Input Bias Current 6 8 6 10 nA Input Resistance Common Mode (Note 2) 4 7 3 7 G Ω Differential Mode (Note 2) 7 12 5 12 G Ω en Input Noise Voltage 0.1Hz to 10Hz (Note 3) 0.9 1.8 0.9 µVp-p Input Noise Voltage f O = 10Hz (Note 3) 45 64 45 nV/ √Hz Density f O = 1000Hz (Note 3) 43 54 43 nV/ √Hz in Input Noise Current 0.1Hz to 10Hz (Note 3) 2.3 4.0 2.3 pAp-p Input Noise Current f O =10Hz (Note 3) 0.06 0.10 0.06 pA/ √Hz Density f O = 1000Hz 0.02 0.02 pA/ √Hz lnput Voltage Range G = 100 13.0 13.8 13.0 13.8 V G = 10 11.5 12.5 11.5 12.5 V CMRR Common Mode 1k Source Imbalance Rejection Ratio G = 100, Over CM Range 100 112 98 112 dB G = 10, Over CM Range 84 100 82 99 dB PSRR Power Supply V S = +2.2V, –0.1V to ±18V 102 114 100 114 dB Rejection Ratio IS Supply Current 92 130 94 150 µA LT11O1AM/AI/AC LT1101M/I/C SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS CMRR Common Mode 1k Source Imbalance Rejection Ratio G = 100, V CM = 0.07V to 3.4V 95 106 92 105 dB G = 10, VCM = 0.07V to 3.1V 84 100 82 99 dB Minimum Supply Voltage (Note 5) 1.8 2.3 1.8 2.3 V VO Maximum 0utput Output High, 50k to GND 4.1 4.3 4.1 4.3 V Voltage Swing Output High, 2k to GND 3.5 3.9 3.5 3.9 V Output Low, V REF = 0, No Load 3.3 6 3.3 6 mV Output Low, VREF = 0, 2k to GND 0.5 1 0.5 1 mV Output Low, VREF = 0, lSINK = 100µA9 0 130 90 130 mV BW Bandwidth G = 100 (Note 2) 2.0 3.0 2.0 3.0 kHz G = 10 (Note 2) 22 33 22 33 kHz SR Slew Rate (Note 2) 0.04 0.07 0.04 0.07 V/ µs VS = 5V, 0V, VCM = 0.1V, VREF(PIN 1) = 0.1V, G = 10 or 100, TA = 25°C, unless otherwise noted. (Note 4) VS = ±15V, VCM = 0V, TA = 25°C, Gain = 10 or 100, unless otherwise noted.

SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS VO Maximum 0utput R L = 50k 13.0 14.2 13.0 14.2 V Voltage Swing R L = 2k 11.0 13.2 11.0 13.2 V BW Bandwidth G = 100 (Note 2) 2.3 3.5 2.3 3.5 kHz G = 10 (Note 2) 25 37 25 37 kHz SR Slew Rate 0.06 0.10 0.06 0.10 V/ µs VS = ±15V, VCM = 0V, TA = 25°C, Gain = 10 or 100, unless otherwise noted. LT1101AM/AI LT1101M/I SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS GE Gain Error G = 100, V O = ±10V, RL = 50k 0.024 0.070 0.026 0.100 % G = 100, VO = ±10V, RL = 5k 0.030 0.100 0.035 0.130 % G = 10, VO = ±10V, RL = 50k or 5k 0.015 0.070 0.018 0.100 % TCGE Gain Error Drift G = 100, R L = 50k 2 4 2 5 ppm/ °C (Note 2) G = 100, R L = 5k 2 7 2 8 ppm/ °C G = 10, RL = 50k or 5k 1 4 1 5 ppm/ °C GNL Gain Nonlinearity G = 100, R L = 50k 24 70 26 90 ppm G = 100, RL = 5k 70 300 75 500 ppm G = 10, RL = 50k 4 13 5 15 ppm G = 10, RL = 5k 10 40 12 60 ppm VOS Input Offset Voltage 90 350 110 500 µV LT1101ISW 110 950 µV ∆VOS/∆T Input Offset Voltage Drift (Note 2) 0.4 2.0 0.5 2.8 µV/°C LT1101ISW 0.5 4.8 mV/ °C lOS Input Offset Current 0.16 0.80 0.19 1.30 nA ∆lOS/∆T Input Offset Current Drift (Note 2) 0.5 4.0 0.8 7.0 pA/ °C IB Input Bias Current 7 10 7 12 nA ∆IB/∆T Input Bias Current Drift (Note 2) 10 25 10 30 pA/ °C CMRR Common Mode G = 100, V CM = –14.4V to 13V 96 111 94 111 dB Rejection Ratio G = 100, V CM = –13V to 11.5V 80 99 78 98 dB PSRR Power Supply V S = 3.0, –0.1V to ±18V 98 110 94 110 dB Rejection Ratio IS Supply Current 105 165 108 190 µA VO Maximum 0utput R L = 50k 12.5 14.0 12.5 14.0 V Voltage Swing R L = 5k 11.0 13.5 11.0 13.5 V ELECTRICAL CHARACTERISTICSVS = ±15V, VCM = 0V, Gain = 10 or 100, –55 °C ≤ TA ≤ 125°C for AM/M grades, –40 °C ≤ TA ≤ 85°C for AI/I grades, unless otherwise noted.

ELECTRICAL CHARACTERISTICSVS = ±15V, VCM = 0V, Gain = 10 or 100, 0°C ≤ TA ≤ 70°C, unless otherwise noted. LT1101AC LT1101C/S SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS GE Gain Error G = 100, V O = ±10V, RL = 50k 0.012 0.055 0.014 0.080 % G = 100, VO = ±10V, RL = 2k 0.018 0.085 0.020 0.100 % G = 10, VO = ±10V, RL = 50k or 2k 0.009 0.055 0.010 0.080 % TCGE Gain Error Drift G = 100, R L = 50k 1 4 1 5 ppm/ °C (Note 2) G = 100, R L = 2k 2 7 2 9 ppm/ °C G = 10, RL = 50k or 5k 1 4 1 5 ppm/ °C GNL Gain Nonlinearity G = 100, R L = 50k 9 25 10 35 ppm G = 100, RL = 2k 33 75 36 100 ppm G = 10, RL = 50k or 2k 4 10 4 11 ppm VOS Input Offset Voltage 70 250 85 350 µV LT1101SW 300 800 µV ∆VOS/∆T Input Offset Voltage Drift (Note 2) 0.4 2.0 0.5 2.8 µV/°C LT1101SW 1.2 4.5 µV/°C lOS Input Offset Current 0.14 0.70 0.17 1.10 nA ∆IOS/∆T Input Offset Current Drift (Note 2) 0.5 4.0 0.8 7.0 pA/ °C IB Input Bias Current 6 9 6 11 nA ∆IB/∆T Input Bias Current Drift (Note 2) 10 25 10 30 pA/ °C CMRR Common Mode G = 100, V CM = –14.4V to 13V 98 112 96 112 dB Rejection Ratio G = 100, V CM = –13V to 11.5V 82 100 80 99 dB PSRR Power Supply V S = 2.5, –0.1V to ±18V 100 112 97 112 dB Rejection Ratio IS Supply Current 98 148 100 170 µA VO Maximum 0utput R L = 50k ±12.5 ±14.1 ±12.5 ±14.1 V Voltage Swing R L = 2k ±10.5 ±13.0 ±10.5 ±13.0 V

SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS TCGE Gain Error Drift R L = 50k (Note 2) 1 4 1 5 ppm/ °C GNL Gain Nonlinearity G = 100, R L = 50k 45 110 48 140 ppm G = 10, RL = 50k (Note 2) 4 13 5 15 ppm VOS Input Offset Voltage 90 350 110 500 µV LT1101ISW 110 950 µV ∆VOS/∆T Input Offset Voltage Drift (Note 2) 0.4 2.0 0.5 2.8 µV/°C LT1101ISW 0.5 4.8 µV/°C lOS Input Offset Current 0.16 0.80 0.19 1.30 nA ∆VOS/∆T Input Offset Current Drift (Note 2) 0.5 4.0 0.8 7.0 pA/ °C IB Input Bias Current 7 10 7 12 nA ∆IB/∆T Input Bias Current Drift (Note 2) 10 25 10 30 pA/ °C CMRR Common Mode G = 100, V CM = 0.1V to 3.2V 91 105 88 104 dB Rejection Ratio G = 10, V CM = 0.1V to 2.9V, VREF = 0.15V 80 98 77 97 dB IS Supply Current 88 135 92 160 µA V0 Maximum 0utput Output High, 50k to GND 3.8 4.1 3.8 4.1 V Voltage Swing Output High, 2k to GND 3.0 3.7 3.0 3.7 V Output Low, VREF = 0, No Load 4.5 8 4.5 8 mV Output Low, VREF = 0, 2k to GND 0.7 1.5 0.7 1.5 mV Output Low, VREF = 0, ISINK = 100µA 125 170 125 170 mV VS = 5V, 0V, VCM = 0.1V, VREF(PIN 1) = 0.1V, Gain = 10 or 100, –40 °C ≤ TA ≤ 85°C for AI/I grades, unless otherwise noted (Note 4).

SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS TCGE Gain Error Drift R L = 50k (Note 2) 1 4 1 5 ppm/ °C GNL Gain Nonlinearity G = 100, R L = 50k 25 80 25 100 ppm G = 10, RL = 50k (Note 2) 4 10 4 11 ppm VOS Input Offset Voltage 70 250 85 350 µV LT1101SW 300 800 µV ∆VOS/∆T Input Offset Voltage Drift (Note 2) 0.4 2.0 0.5 2.8 µV/°C LT1101SW 1.2 4.5 µV/°C lOS Input Offset Current 0.14 0.70 0.17 1.10 nA ∆IOS/∆T Input Offset Current Drift (Note 2) 0.5 4.0 0.8 7 pA/ °C IB Input Bias Current 6 9 6 11 nA ∆IB/∆T Input Bias Current Drift (Note 2) 10 25 10 30 pA/ °C CMRR Common Mode G = 100, V CM = 0.07V to 3.3V 93 105 90 104 dB Rejection Ratio G = 10, V CM = 0.07V to 3V, VREF = 0.15V 82 99 80 98 dB IS Supply Current 80 120 85 145 µA VO Maximum 0utput Output High, 50k to GND 4.0 4.2 4.0 4.2 V Voltage Swing Output High, 2k to GND 3.3 3.8 3.3 3.8 V Output Low, VREF = 0, No Load 4 7 4 7 mV Output Low, VREF = 0, 2k to GND 0.6 1.2 0.6 1.2 mV Output Low, VREF = 0, ISINK = 100µA 100 150 100 150 mV VS = 5V, 0V, VCM = 0.1V, VREF(PIN 1) = 0.1V, Gain = 10 or 100, 0°C ≤ TA ≤ 70°C, unless otherwise noted (Note 4). Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: This parameter is not tested. It is guaranteed by design and by inference from other tests. Note 3: This parameter is tested on a sample basis only. Note 4: These test conditions are equivalent to VS = 4.9V, – 0.1V, VCM = 0V, VREF(PIN1) = 0V. Note 5: Minimum supply voltage is guaranteed by the power supply rejection test. The LT1101 actually works at 1.8V supply with minimal degradation in performance.

TYPICAL PERFOR A CE CHARACTERISTICS UW Gain = 100 Nonlinearity Distribution GAIN NONLINEARITY (PPM) PERCENT OF UNITS 4 8 10 18 26 12 14 16 LT1101 • TPC01 VS = ± 15V TA = 25°C RL ≥ 50kΩ

708 UNITS

Gain = 10 Nonlinearity Distribution GAIN NONLINEARITY (PPM) PERCENT OF UNITS 2 4 6 10 LT1101 • TPC02 VS = ± 15V TA = 25°C RL ≥ 2kΩ LT1101 • TPC03 FREQUENCY (Hz) –0.5GAIN ERROR (%) GAIN (dB) –1.0 10 1k 10k 1M –1.0 100 100k –0.5 –1.5 –1.5 VS = ± 15V TA = 25°CG = 100 G = 10 Gain vs Frequency Gain Error Over Temperature INPUT OFFSET VOLTAGE (µV) –200 PERCENT OF UNITS10 100–100 200 LT1101 • TPC06 TA = 25°C

746 UNITS MEASURED IN ALL PACKAGES

S = 15V, 0V AND AT VS = ±15V Input Offset Voltage DistributionGain Nonlinearity Temperature Input Bias and Offset Currents vs Temperature TEMPERATURE (°C) –5 0 OFFSET CURRENT (pA)BIAS CURRENT (nA) 200 0 50 75 150 100 –2 5 25 100 125 LT1101 • TPC08 VS = 5V, 0V TO ±15V IOS IB Supply Current vs Temperature TEMPERATURE (°C) –50 SUPPLY CURRENT (µA) 100 110 25 75 –25 0 50 100 125 LT1101 • TPC07 VS = 5V, 0V VS = ±15V COMMON MODE VOLTAGE (V) –12 INPUT BIAS CURRENT (nA) –10 0123 4 LT1101 • TPC09 TA = –55°C TA = 125°C VS = 5V, 0V TA = 25°C Input Bias Current vs Common Mode Voltage VOLTAGE TEMPERATURE (°C) –50 –25 GAIN ERROR (%) 0.02 0.05 0 50 75 0.01 0.04 0.03 25 100 125 LT1101 • TPC04 G = 100, VS = ± 15V, RL = 2k G = 10, VS = ± 15V, RL = 2k G = 100, VS = ± 15V, RL = 5k G = 100, VS = 5V, 0V, RL = 50k G = 100, VS = ± 15V, RL = 50k G = 10, VS = ± 15V, RL = 5k G = 10, VS = ± 15V or 5V, 0V, RL = 50k SEE GAIN VS T FOR DEFINITIONS TEMPERATURE (°C) –50 GAIN NONLINEARITY (PPM) 25 75 –25 0 50 100 125 LT1101 • TPC05

TYPICAL PERFOR A CE CHARACTERISTICS UW Common Mode Range vs Supply Voltage Power Supply Rejection Ratio vs Frequency LT1101 • TPC12 FREQUENCY (Hz) POWER SUPPLY REJECTION RATIO (dB) 120 100 10 1k 10k 100k 100 TA = 25°C NEGATIVE SUPPLY POSITIVE SUPPLY Common Mode Rejection Ratio vs Frequency Short-Circuit Current vs Time Output Voltage Swing vs Load Current LT1101 • TPC14 SOURCING OR SINKING LOAD CURRENT (mA) 0.01 OUTPUT VOLTAGE SWING (V) 0.1 1 10 V– 1 V+ –2 V+ –1 V– 2 125°C –55°C –55°C 125°C 25°C 25°C Output Saturation vs Temperature vs Sink Current LT1101 • TPC13 TEMPERATURE (°C) –50 –25 SATURATION VOLTAGE (mV) 100 1000 02 5 5 0 7 5 100 125 ISINK = 2mA ISINK = 1mA ISINK = 100µA ISINK = 10µA ISINK = 1µA NO LOAD VS = 5V, 0V RL = 5k TO GROUND Undistorted Output Swing vs Frequency Output Impedance vs Frequency FREQUENCY (Hz) OUTPUT IMPEDANCE (Ω) 100 0.1 10 100 10k 100k1k LT1101 • TPC18 G = 100 G = 10 LT1101 • TPC16 CAPACITIVE LOAD (nF) 0.1 OVERSHOOT (%) 100 120 11 0 100 VS = ± 2.0V TO ± 15V TA = 25°C G = 100 G = 10 Capacitive Load Handling FREQUENCY (Hz) 0.1 COMMON MODE REJECTION RATIO (dB) 120 1 10 100 1k 10k 100k 100 LT1101 • TPC10 VS = ± 15V TA = 25°C G = 10 G = 100 C = 82pF PIN 1 TO PIN 2 G = 100 SUPPLY VOLTAGE (V) COMMON MODE RANGE (V) V– 1 V+ –3 V + –2 V+ –1 ±4 ±8 ±10 ±18 V – 2 LT1101 • TPC11 G = 100 G = 10 25°C 125°C –5 5°C 125°C –5 5°C 25°C G = 100 G = 10ALL TEMPERATURES TIME FROM OUTPUT SHORT TO GROUND (MINUTES) SINKING SOURCING SHORT-CIRCUIT CURRENT (mA) –10 –20 –30 –40 LT1101 • TPC15 TA = 125°C, VS = 5V, 0V TA = 25°C, VS = ± 15V TA = 5°C, VS = ± 15V TA = 125°C, VS = ± 15V TA = 125°C, VS = ± 15V TA = 25°C, VS = 5V, 0V LT1101 • TPC17 FREQUENCY (Hz) 100 PEAK-TO-PEAK OUTPUT SWING, VS = ± 15V (V) PEAK-TO-PEAK OUTPUT SWING, VS = 5V, 0V (V) 1k 10k 100 VS = 5V, 0V, RL ≥ 1k VS = 5V, 0V, RL ≥ 100k VS = ±15V RL ≥ 30k VS = ±15V RL ≥ 100k TA = 25°C LOAD, RL, TO GROUND

TYPICAL PERFOR A CE CHARACTERISTICS UW Warm-Up DriftNoise Spectrum Large Signal Transient Response G = 10, VS = 5V, 0V FREQUENCY (Hz) 0.1 VOLTAGE NOISE DENSITY (nV/√Hz) VOLTAGE NOISE DENSITY (fA/√Hz) 100 1000 300 10 1000 1001 LT1101 • TPC19 CURRENT NOISE VOLTAGE NOISE VS = ± 2.5V TO ± 15V TA = 25°C 1/f CORNER 0.6Hz TIME AFTER POWER ON (MINUTES) CHANGE IN OFFSET VOLTAGE (µV) 0.4 0.2 0.8 0.6 LT1101 • TPC20 VS = ± 15V TA = 25°C WARM UP DRIFT AT VS = 5V, 0V IS IMMEASURABLY LOW 1V/DIV 50µs/DIV OUTPUT FROM 0V TO 4.5V, NO LOAD Large Signal Transient Response G = 10, VS = 15V 5V/DIV 200µs/DIV NO LOAD Large Signal Transient Response G = 100, VS = ±15V 5V/DIV 200µs/DIV NO LOAD Large Signal Transient Response G = 100, VS = 5V, 0V 1V/DIV 100µs/DIV OUTPUT FROM 0V TO 4.5V, NO LOAD Small Signal Transient Response G = 10, VS = 5V, 0V 20mV/DIV 20µs/DIV OUTPUT FROM 0.05V TO 0.15V, NO LOAD Small Signal Transient Response G = 10, VS = ±15V 20mV/DIV 20µs/DIV Small Signal Transient Response G = 100, VS = 5V, 0V 20V/DIV 200µs/DIV OUTPUT FROM 0.05V TO 0.15V, NO LOAD (RESPONSE WITH VS = ±15V, G = 100 IS IDENTICAL) LT1101 • TPC20.1 LT1101 • TPC20.4LT1101 • TPC20.2 LT1101 • TPC20.3 LT1101 • TPC20.5 LT1101 • TPC20.6 LT1101 • TPC20.7

Single Supply: Minimum Output Voltage vs Common Mode Voltage Single Supply: Minimum Common Mode Voltage vs Output Voltage Minimum Supply Voltage vs Temperature TYPICAL PERFOR A CE CHARACTERISTICS UW APPLICATIO S I FOR ATIOWU UU Single Supply Applications The LT1101 is the first instrumentation amplifier which is fully specified for single supply operation, (i.e. when the negative supply is 0V). Both the input common mode range and the output swing are within a few millivolts of ground. Probably the most common application for instrumenta- tion amplifiers is amplifying a differential signal from a transducer or sensor resistance bridge. All competitive instrumentation amplifiers have a minimum required common mode voltage which is 3V to 5V above the negative supply. This means that the voltage across the bridge has to be 6V to 10V or dual supplies have to be used (i.e., micropower) single battery usage is not attainable on competitive devices. The minimum output voltage obtainable on the LT1101 is a function of the input common mode voltage. When the common mode voltage is high and the output is low, current will flow from the output of amplifier A into the output of amplifier B. See the Minimum Output Voltage vs Common Mode Voltage plot. Similarly, the Single Supply Minimum Common Mode Voltage vs Output Voltage plot specifies the expected common mode range. When the output is high and input common mode is low, the output of amplifier A has to sink current coming from the output of amplifier B. Since amplifier A is effectively in unity gain, its input is limited by its output. Common Mode Rejection vs Frequency The common mode rejection ratio (CMRR) of the LT1101 starts to roll off at a relatively low frequency. However, as shown on the Common Mode Rejection Ratio vs Fre- quency plot, CMRR can be enhanced significantly by connecting an 82pF capacitor between pins 1 and 2. This improvement is only available in the gain 100 configura- tion, and it is in excess of 30dB at 60Hz. Offset Nulling The LT1101 is not equipped with dedicated offset null terminals. In many bridge transducer or sensor applica- tions, calibrating the bridge simultaneously eliminates the instrumentation amplifier’s offset as a source of error. For example, in the Micropower Remote Temperature Sensor Application shown, one adjustment removes the offset errors due to the temperature sensor, voltage reference and the LT1101. OUTPUT VOLTAGE (V) MINIMUM COMMON MODE VOLTAGE (V) 120 2 468 10 12 100 LT1101 • TPC21 G = 10 G = 100 V+ = 1.8V TO 15V V– = OV –55°C –55°C 125°C 125°C 25°C 25°C LT1101 • TPC22 MINIMUM OUTPUT VOLTAGE (mV) COMMON MODE VOLTAGE (V) 2010 4030 60 70 9050 100 G = 10 G = 100 125°C 125°C 25°C–55°C –55°C V+ = 1.8V TO 15V V– = OV NO LOAD 25°C TEMPERATURE (°C) –50 MINIMUM SUPPLY, OUTPUT SWING, COMMON MODE RANGE (V) 1.0 2.5 0 50 75 LT1101 • TPC23 0.5 2.0 1.5 –25 25 100 125 COMMON-MODE RANGE AT MINIMUM SUPPLY MINIMUM SUPPLY VOLTAGE V– = 0V OUTPUT SWING AT MINIMUM SUPPLY

A simple resistive offset adjust procedure is shown below. If R = 5Ω for G = 10, and R = 50Ω for G = 100, then the effect of R on gain error is approximately 0.006%. Unfortunately, about 450µA has to flow through R to bias the reference terminal (Pin 1) and to null out the worst- case offset voltage. The total current through the resistor network can exceed 1mA, and the micropower advantage of the LT1101 is lost. APPLICATIO S I FOR ATIOWU UU Another offset adjust scheme uses the LT1077 micropower op amp to drive the reference Pin 1. Gain error and common mode rejection are unaffected, the total current increase is 45µA. The offset of the LT1077 is trimmed and amplified to match and cancel the offset voltage of the LT1101. Output offset null range is ±25mV. LT1101 • AI01 15V 10k 10k 20k OUTLT1101 10k – 15V R LT1101 • AI02 OUTLT1101 1.2V TO 18V –1.2V TO –18V 100k 3.3k 5k POT LT1077 Gains Between 10 and 100 Gains between 10 and 100 can be achieved by connecting two equal resistors (= R x) between Pins 1 and 2 and Pins 7 and 8. The nominal value of R is 9.2k Ω. The usefulness of this method is limited by the fact that R is not controlled to better than ±10% absolute accuracy in production. However, on any specific unit, 90R can be measured between Pins 1 and 2. Input Protection Instrumentation amplifiers are often used in harsh environments where overload conditions can occur. The LT1101 employs PNP input transistors, consequently the differential input voltage can be ±30V (with ±15V supplies, ±36V with ±18V supplies) without an increase in input bias current. Competitive instrumentation amplifiers have NPN inputs which are protected by back-to-back diodes. When the differential input voltage exceeds ±1.3V on these competitive devices, input current increases to the milliampere level; more than ±10V differential voltage can cause permanent damage. When the LT1101’s inputs are pulled above the positive supply, the inputs will clamp a diode voltage above the positive supply. No damage will occur if the input current is limited to 20mA. 500Ω resistors in series with the inputs protect the LT1101 when the inputs are pulled as much as 10V below the negative supply. Gain = 10 + R x R+R x/90

APPLICATIO S I FOR ATIOWU UU LT1101 • AI04 75k OUTPUT ILOOP 18k 390k 12V 62.5Ω LT1004-1.2 4mA TO 20mA IN – OV TO 10V OUT TRIM OUTPUT TO 5V AT 12mA IN LT1101 LT1101 • AI05 2k7 V+ = 15V V– = –15V OUT GAIN = 10, DEGRADED BY 0.01% DUE TO LT1010 OUTPUT = ±10V INTO 75Ω (TO 1.5kHz) DRIVES ANY CAPACITIVE LOAD SINGLE SUPPLY APPLICATION (V+ = 5V, V– = OV): V OUT MIN = 120mV, VOUT MAX = 3.4V LT1101 LT1010 LT1101 • AI06 3 1 R R 100VIN –1.5V IOUT = IOUT RL VIN LT1101 IOUT = 0mA TO 5mA VOLTAGE COMPLIANCE = 6.4V (R ≤ 200Ω) Micropower, Battery Operated Remote Temperature Sensor 4mA to 20mA Loop Receiver Instrumentation Amplifier with ±150mA Output Current Voltage Controlled Current Source LT1101 • AI03 LT1101 G = 10 REMOTE TEMP SENSOR 75k 100nA 20k 62Ω 2210Ω 10k 75k POT 3 5 LM134-3 OUT 10mV/°C TRIM OUTPUT TO 250mV AT 25°C TEMPERATURE RANGE = 2.5°C TO 150°C ACCURACY = ±0.5°C LT1004-1.2

APPLICATIO S I FOR ATIOWU UU LT1101 • AI07 3 4R SHIELD MINIMUM VOLTAGE ACROSS BRIDGE = 20mV MINIMUM SUPPLY VOLTAGE = 1.8V RR R RESISTANCE BRIDGE TRANSDUCER OR SENSOR OUTLT1101 G = 100 Differential Voltage Amplification from a Resistance Bridge Gain = 20, 110 or 200 Instrumentation Amplifier Differential Output Single Ended Output LT1101 • AI08 OUT IN GAIN = 200, AS SHOWN GAIN = 20, SHORT PIN 1 TO PIN 2, PIN 7 TO PIN 8 ON BOTH DEVICES GAIN = 110, SHORT PIN 1 TO PIN 2, PIN 7 TO PIN 8 ON ONE DEVICE, NOT ON THE OTHER INPUT REFERRED NOISE IS REDUCED BY √2 (G = 200 OR 20) LT1101 LT1101 3 – LT1101 IN OUT LT1101

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 represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. UPACKAGE DESCRIPTIO H Package 8-Lead TO-5 Metal Can (.200 Inch PCD) (Reference LTC DWG # 05-08-1320) .050 (1.270) MAX .016 – .021** (0.406 – 0.533) .010 – .045* (0.254 – 1.143) SEATING PLANE .040 (1.016) MAX .165 – .185 (4.191 – 4.699) GAUGE PLANE REFERENCE PLANE .500 – .750 (12.700 – 19.050) .305 – .335 (7.747 – 8.509) .335 – .370 (8.509 – 9.398) DIA .200 (5.080) TYP .027 – .045 (0.686 – 1.143) .028 – .034 (0.711 – 0.864) .110 – .160 (2.794 – 4.064) INSULATING STANDOFF 45°TYP H8(TO-5) 0.200 PCD 0801 LEAD DIAMETER IS UNCONTROLLED BETWEEN THE REFERENCE PLANE AND THE SEATING PLANE FOR SOLDER DIP LEAD FINISH, LEAD DIAMETER IS .016 – .024 (0.406 – 0.610) PIN 1 OBSOLETE PACKAGES J8 0801 .014 – .026 (0.360 – 0.660) .200 (5.080) MAX .015 – .060 (0.381 – 1.524) .125 3.175 MIN.100 (2.54) BSC .300 BSC (7.62 BSC) .008 – .018 .005 (0.127) MIN .405 (10.287) MAX .220 – .310 (5.588 – 7.874) 12 3 4 87 65 .025 (0.635) RAD TYP .045 – .068 (1.143 – 1.650) FULL LEAD OPTION .023 – .045 (0.584 – 1.143) HALF LEAD OPTION CORNER LEADS OPTION (4 PLCS) .045 – .065 (1.143 – 1.651)NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS 8-Lead CERDIP (Narrow .300 Inch, Hermetic) (Reference LTC DWG # 05-08-1110)

Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com LW/TP 1002 1K REV A • PRINTED IN USA  LINEAR TECHNOLOGY CORPORATION 1989 16-Lead Plastic Small Outline (Wide .300 Inch) (Reference LTC DWG # 05-08-1620) S16 (WIDE) 0502 NOTE 3 .398 – .413 (10.109 – 10.490) NOTE 4 16 15 14 13 12 11 10 9 N 23 4 5 6 78 N/2 .394 – .419 (10.007 – 10.643) .037 – .045 (0.940 – 1.143) .004 – .012 (0.102 – 0.305) .093 – .104 (2.362 – 2.642) .050 (1.270) BSC .014 – .019 (0.356 – 0.482) TYP 0° – 8° TYP NOTE 3 .009 – .013 (0.229 – 0.330) .005 (0.127) RAD MIN .016 – .050 (0.406 – 1.270) .291 – .299 (7.391 – 7.595) NOTE 4 × 45°.010 – .029 (0.254 – 0.737) INCHES (MILLIMETERS) NOTE: 1. DIMENSIONS IN 2. DRAWING NOT TO SCALE 3. PIN 1 IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANUFACTURING OPTIONS. THE PART MAY BE SUPPLIED WITH OR WITHOUT ANY OF THE OPTIONS 4. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) .420 MIN .325 ±.005 RECOMMENDED SOLDER PAD LAYOUT .045 ±.005 N

123 N/2

.050 BSC.030 ±.005 TYP 8-Lead PDIP (Narrow .300 Inch) (Reference LTC DWG # 05-08-1510) N8 0502 .100 (2.54) BSC .065 (1.651) TYP .045 – .065 (1.143 – 1.651) .130 ± .005 (3.302 ± 0.127) .020 (0.508) MIN.018 ± .003 (0.457 ± 0.076) .125 (3.175) MIN 12 3 4 87 6 5 .255 ± .015* (6.477 ± 0.381) .400* (10.160) MAX .009 – .015 (0.229 – 0.381) .300 – .325 (7.620 – 8.255) .325 +.035 –.015 +0.889 – 0.3818.255() NOTE: 1. DIMENSIONS ARE INCHES MILLIMETERS *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH (0.254mm)