The OP281 and OP481 are dual and quad ultralow power single-supply amplifiers featuring rail-to-rail outputs. Each operates from supplies as low as 2.0 V and is specified at +3 V and +5 V single supplies as well as ±5 V dual supplies. Fabricated on Analog Devices’ CBCMOS process, the OP281/OP481 feature a precision bipolar input and an output that swings to within millivolts of the supplies, continuing to sink or source current up to
The OP281 (dual) and OP481 (quad) are ultralow‑power, single‑supply operational amplifiers featuring rail‑to‑rail output and low offset voltage. They operate from supplies as low as 2.0 V and are specified for industrial temperature ranges, making them suitable for battery‑powered instrumentation, safety monitoring, and low‑power sensor interfaces.
The document lists detailed electrical specifications, absolute maximum ratings, thermal resistance data, and typical performance curves. Pin‑out diagrams for SOIC and TSSOP packages are included, along with application notes such as comparator use and low‑side current monitoring.
| Offset Voltage | 1.5 mV |
|---|---|
| Supply Current per Amplifier | 4 µA typ |
The typical supply current is 4 µA per amplifier.
They are specified for an industrial temperature range of –40 °C to +85 °C.
The offset voltage is typically 1.5 mV.