AD8231 is a zero drift, digital programmable instrumentation amplifier with excellent temperature performance and DC performance. It is suitable for industrial control applications such as pressure transducers, strain transducers, thermocouples, and RTD temperature sensors.
The AD8231 is a low‑drift, rail‑to‑rail instrumentation amplifier from Analog Devices, featuring digitally programmable gain settings (1‑128) and an integrated shutdown mode for ultra‑low power consumption.
It offers low noise (15 pV offset, 500 pA bias), high CMRR (80 dB at G=1), 2.7 MHz bandwidth at unity gain, and operates from 3 V–6 V single‑supply or ±1.5 V–±3 V dual‑supply across –40 °C to +125 °C.
| Programmable Gain Options | 1, 2, 4, 8, 16, 32, 64, 128 |
|---|---|
| Input Offset Voltage (max) | 15 pV |
| Input Bias Current (max) | 500 pA |
| Bandwidth (G=1) | 2.7 MHz |
| Slew Rate | 1.1 V/µs |
| CMRR (G=1) | 80 dB |
| Supply Voltage (single) | 3 V to 6 V |
| Supply Voltage (dual) | +1.5 V to +3 V |
| Quiescent Current (active) | 4–5 mA |
| Operating Temperature Range | –40°C to +125°C |
The AD8231 offers digitally or pin programmable gains of 1, 2, 4, 8, 16, 32, 64, or 128.
In shutdown, the device reduces current consumption to a maximum of 1 µA.
The maximum input offset voltage is 15 pV.
At a gain of 1, the AD8231 provides a bandwidth of 2.7 MHz.