AD8538/AD8539 are low power, high precision, auto-zero op amps featuring extremely low offset voltage, low input bias current and low power consumption.
The AD8538 and AD8539 are low‑power, precision auto‑zero operational amplifiers from Analog Devices. They feature ultra‑low offset voltage, low input bias current, and minimal supply current, making them ideal for battery‑powered and portable applications.
Both devices operate over an extended industrial temperature range (‑40 °C to +125 °C) and are offered in several surface‑mount packages, including 5‑lead TSOT‑23, 8‑lead narrow‑body SOIC, MSOP, and others.
| Offset Voltage (Vos) – typical | 13 pV |
|---|---|
| Input Bias Current – typical | 25 pA |
| Supply Current – typical | 180 pA |
| Power Supply Rejection Ratio (PSRR) – typical | 125 dB |
| Gain‑Bandwidth Product (GBP) | 430 kHz |
| Operating Temperature Range | -40 °C to +125 °C |
The AD8538 has a typical offset voltage of 13 pV.
At a 5 V supply, the AD8538 draws about 180 pA typical supply current.
The device operates from –40 °C up to +125 °C.
The gain‑bandwidth product is specified as 430 kHz.