Datasheet LT1024 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | Dual, Matched Picoampere, Microvolt Input, Low Noise Op Amp |
| Pages / Page | 12 / 1 — FEATURES. DESCRIPTIO. APPLICATIO S. TYPICAL APPLICATIO. Two Op Amp … |
| File Format / Size | PDF / 179 Kb |
| Document Language | English |
FEATURES. DESCRIPTIO. APPLICATIO S. TYPICAL APPLICATIO. Two Op Amp Instrumentation Amplifier. Input Bias Current vs Temperature
Model Line for this Datasheet
Text Version of Document
LT1024 Dual, Matched Picoampere, Microvolt Input, Low Noise Op Amp
U FEATURES DESCRIPTIO
■ Guaranteed Offset Voltage: 50µV Max The LT ®1024 dual, matched internally compensated ■ Guaranteed Bias Current: universal precision operational amplifier can be used in 25°C: 120pA Max practically all precision applications requiring multiple op – 55°C to 125°C: 700pA Max amps. The LT1024 combines picoampere bias currents ■ Guaranteed Drift: 1.5µV/°C Max (which are maintained over the full –55°C to 125°C ■ Low Noise, 0.1Hz to 10Hz: 0.5µVP-P temperature range), microvolt offset voltage (and low drift ■ Guaranteed Supply Current: 600µA Max with time and temperature), low voltage and current ■ Guaranteed CMRR: 112dB Min noise and low power dissipation. Extremely high ■ Guaranteed PSRR: 112dB Min common mode and power supply rejection ratios, ■ Guaranteed Voltage Gain with 5mA Load Current practically immeasurable warm-up drift, and the ability to ■ Guaranteed Matching Characteristics deliver 5mA load current with a voltage gain of a million, round out the LT1024’s superb precision specifications.
U
Tight matching is guaranteed on offset voltage,
APPLICATIO S
noninverting bias currents and common mode and power ■ Strain Gauge Signal Conditioner supply rejections. ■ Dual Limit Precision Threshold Detection The all-around excellence of the LT1024 eliminates the ■ Charge Integrators necessity of the time-consuming error analysis procedure ■ Wide Dynamic Range Logarithmic Amplifiers of precision system design in many dual applications; the ■ Light Meters LT1024 can be stocked as the universal dual op amp in the ■ Low Frequency Active Filters 14-pin DIP configuration. ■ Standard Cell Buffers ■ Thermocouple Amplifiers For a single op amp with similar specifications, see the , LTC and LT are registered trademarks of Linear Technology Corporation. LT1012 data sheet; for a single supply dual precision op amp in the 8-pin configuration, see the LT1013 data sheet.
U TYPICAL APPLICATIO Two Op Amp Instrumentation Amplifier Input Bias Current vs Temperature
100 R5 R4 † 2.2k 100k R1* R2 50 100k 10k UNDERCANCELLED UNIT 3 0 – R3 OVERCANCELLED UNIT 13 10k 10 1/2 LT1024 – 4 6 –50 – + 1/2 LT1024 OUTPUT INPUTS 11 + INPUT BIAS CURRENT (pA) –100 + TYPICAL PERFORMANCE: –150 OFFSET VOLTAGE = 20µV R4 R2 R3 R2 + R3 –50 –25 0 25 50 75 100 125 GAIN = 1 + 1 ( + )+ ~ 100 ~ BIAS CURRENT = ±30pA R3 2 R1 R4 R5 TEMPERATURE (°C) OFFSET CURRENT = 30pA LTC1024 • TA02 * TRIM FOR COMMON-MODE REJECTION † TRIM FOR GAIN LT1024 • TA01 1024fa 1
U FEATURES DESCRIPTIO
■ Guaranteed Offset Voltage: 50µV Max The LT ®1024 dual, matched internally compensated ■ Guaranteed Bias Current: universal precision operational amplifier can be used in 25°C: 120pA Max practically all precision applications requiring multiple op – 55°C to 125°C: 700pA Max amps. The LT1024 combines picoampere bias currents ■ Guaranteed Drift: 1.5µV/°C Max (which are maintained over the full –55°C to 125°C ■ Low Noise, 0.1Hz to 10Hz: 0.5µVP-P temperature range), microvolt offset voltage (and low drift ■ Guaranteed Supply Current: 600µA Max with time and temperature), low voltage and current ■ Guaranteed CMRR: 112dB Min noise and low power dissipation. Extremely high ■ Guaranteed PSRR: 112dB Min common mode and power supply rejection ratios, ■ Guaranteed Voltage Gain with 5mA Load Current practically immeasurable warm-up drift, and the ability to ■ Guaranteed Matching Characteristics deliver 5mA load current with a voltage gain of a million, round out the LT1024’s superb precision specifications.
U
Tight matching is guaranteed on offset voltage,
APPLICATIO S
noninverting bias currents and common mode and power ■ Strain Gauge Signal Conditioner supply rejections. ■ Dual Limit Precision Threshold Detection The all-around excellence of the LT1024 eliminates the ■ Charge Integrators necessity of the time-consuming error analysis procedure ■ Wide Dynamic Range Logarithmic Amplifiers of precision system design in many dual applications; the ■ Light Meters LT1024 can be stocked as the universal dual op amp in the ■ Low Frequency Active Filters 14-pin DIP configuration. ■ Standard Cell Buffers ■ Thermocouple Amplifiers For a single op amp with similar specifications, see the , LTC and LT are registered trademarks of Linear Technology Corporation. LT1012 data sheet; for a single supply dual precision op amp in the 8-pin configuration, see the LT1013 data sheet.
U TYPICAL APPLICATIO Two Op Amp Instrumentation Amplifier Input Bias Current vs Temperature
100 R5 R4 † 2.2k 100k R1* R2 50 100k 10k UNDERCANCELLED UNIT 3 0 – R3 OVERCANCELLED UNIT 13 10k 10 1/2 LT1024 – 4 6 –50 – + 1/2 LT1024 OUTPUT INPUTS 11 + INPUT BIAS CURRENT (pA) –100 + TYPICAL PERFORMANCE: –150 OFFSET VOLTAGE = 20µV R4 R2 R3 R2 + R3 –50 –25 0 25 50 75 100 125 GAIN = 1 + 1 ( + )+ ~ 100 ~ BIAS CURRENT = ±30pA R3 2 R1 R4 R5 TEMPERATURE (°C) OFFSET CURRENT = 30pA LTC1024 • TA02 * TRIM FOR COMMON-MODE REJECTION † TRIM FOR GAIN LT1024 • TA01 1024fa 1
