AD8231 is a zero-drift, digital programmable instrumentation amplifier with features such as digitally programmable gain, excellent temperature performance, excellent DC performance, and good AC performance.
The AD8231 is a precision instrumentation amplifier designed for industrial temperature sensing, data logging, and other high‑accuracy applications. It offers digitally or pin‑programmable gains of 1, 2, 4, 8, 16, 32, 64, or 128, rail‑to‑rail input and output, and a shutdown mode that reduces current to 1 µA.
The device operates over an extended temperature range of –40 °C to +125 °C, is supplied in a 4 mm × 4 mm 16‑lead LFCSP package, and includes an uncommitted op‑amp for extra gain or filtering. Detailed specifications cover offset voltage, bias current, CMRR, bandwidth, slew rate, and power consumption.
| Gain options | 1, 2, 4, 8, 16, 32, 64, 128 |
|---|---|
| Input bias current (typical) | 500 pA |
| CMRR (G=1) | 80 dB |
| Bandwidth (G=1) | 2.7 MHz |
| Slew rate | 1.1 V/µs |
| Supply voltage range (single supply) | 3 V to 6 V |
| Quiescent current (normal operation) | 4 mA |
| Operating temperature range | –40 °C to +125 °C |
The AD8231 provides programmable gains of 1, 2, 4, 8, 16, 32, 64, or 128.
The AD8231 operates from –40 °C to +125 °C.
It is available in a 4 mm × 4 mm 16‑lead LFCSP (chip‑scale) package.