The AD8538/AD8539 are low power, high precision, auto-zero op amps. They have low offset voltage, input offset drift, and input bias current, making them suitable for applications such as mobile communications, portable instrumentation, and battery-powered devices.
This handbook describes the AD8538 and AD8539 low‑power, precision, auto‑zero operational amplifiers. It includes feature highlights, pin configurations, electrical specifications, absolute maximum ratings, thermal characteristics, typical performance graphs, and ordering information.
The devices are intended for battery‑powered and portable instrumentation, mobile communications, sensor interfaces, and electronic scales, operating over a wide temperature range and with very low offset voltage and bias current.
| Offset Voltage (typical) | 13 pV |
|---|---|
| Input Bias Current (typical) | 25 pA |
| Supply Current (typical) | 180 pA |
| Gain Bandwidth Product | 430 kHz |
The amplifiers operate from 2.7 V to 5.5 V on a single supply.
They are specified for –40 °C to +125 °C.
Typical supply current is 180 pA (up to 215 pA at 5 V).