OP221 is a low power dual operational amplifier from Analog Devices that can be used in either single or dual supply operation. The wide supply voltage range, wide input voltage range, and low supply current drain of the OP221 make it well-suited for operation from batteries or unregulated power supplies. The excellent specifications of the individual amplifiers combined with the tight matching and temperature tracking between channels make it an ideal choice for a wide variety of applications.
The OP221 is a monolithic dual operational amplifier that can be used in single‑supply (5 V to 30 V) or dual‑supply configurations. Its low supply current and wide input voltage range make it suitable for battery‑powered or unregulated applications.
The device offers tight matching between channels, low input offset voltage, low offset drift, low noise, and high open‑loop gain, providing high performance for instrumentation and precision analog circuits.
| Input Bias Current | 55 nA typ (100 nA max) |
|---|---|
| Supply Current (No Load, +2.5 V) | 550 µA typ (450 µA min, 650 µA max) |
| Gain‑Bandwidth Product | 600 kHz |
The OP221 can operate from 5 V to 30 V in single‑supply mode or from ±5 V to ±15 V in dual‑supply mode.
The typical no‑load supply current at +2.5 V is 550 µA.
The device can be stored from –65 °C up to +150 °C.