AD8591/AD8592/AD8594 is a single-supply, rail-to-rail input/output operational amplifier with shutdown function from Analog Devices.
The AD859x family comprises single, dual and quad CMOS operational amplifiers that operate from a single supply (+2.5 V to +6 V). They feature rail‑to‑rail input and output, high output drive up to 250 mA, and a shutdown function that reduces supply current to less than 1 pA. Their low input bias currents and high slew rates make them suitable for portable audio, instrumentation and LCD driver applications.
The devices are offered in multiple surface‑mount packages: AD8591 in a 6‑lead SOT, AD8592 in a 10‑lead uSOIC, and AD8594 in 16‑lead narrow SOIC and 16‑lead TSSOP. Detailed electrical characteristics, absolute maximum ratings, and application notes are provided for designers.
| Supply Voltage Range | +2.5 V to +6 V |
|---|---|
| Maximum Output Current | 250 mA |
| Slew Rate | 5 V/µs |
| Gain Bandwidth Product | 2.2 MHz |
| Input Bias Current (typ) | 50 pA |
| Power Supply Rejection Ratio | 45 dB |
| Input Offset Voltage (typ) | 25 mV |
Each amplifier can source or sink up to 250 mA of output current.
In shutdown mode the total supply current is reduced to less than 1 pA.