Precision monolithic instrumentation amplifier supports data acquisition applications requiring high linearity, high common-mode rejection, low offset drift, and low noise. Pin-programmable fixed gains of 1, 10, 100, and 1000 require no external components, while other gains from 1 to 1000 use a single external resistor. The amplifier provides 0.3 µV p-p low-frequency noise at high gains, 120 dB CMRR at gain of 1000, and 5 V/µs slew rate. Operation is specified from dual supplies from ±6 V to ±18 V, with grade-dependent temperature ranges up to −55°C to +125°C.
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| Amplifier type | Precision instrumentation amplifier |
| Pin-programmable gain range | 1 to 1000 |
| External resistor gain equation | 40000/RG + 1 |
| Low-frequency voltage noise at G=100 or G=1000 | 0.3µV p-p |
| Nonlinearity at G=1, C grade | ±0.003% |
| Common-mode rejection at G=1000, C grade | 120dB |
| Input offset voltage, C grade | 50µV |
| Input offset voltage drift, C grade | 0.5µV/°C |
| Gain bandwidth product | 25MHz |
| Small-signal bandwidth at G=1 | 1MHz |
| Small-signal bandwidth at G=10 | 400kHz |
| Small-signal bandwidth at G=100 | 150kHz |
| Small-signal bandwidth at G=1000 | 25kHz |
| Slew rate | 5.0V/µs |
| Settling time to 0.01%, G=1 to 100 | 15µs |
| Output voltage swing with 2 kΩ load | ±10V |
| Differential input resistance | 1e9Ω |
| Power supply range | ±6 to ±18V |
| Quiescent current | 3.5 typ, 5.0 maxmA |
| Operating temperature range, S grade | -55 to +125°C |
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