The OPA241 series and OPA251 series are specifically designed for battery powered, portable applications. In addition to very low power consumption (25µA), these amplifiers feature low offset voltage, rail-to-rail output swing, high common-mode rejection, and high open-loop gain.
The OPA241 and OPA251 families are single‑supply, micro‑power operational amplifiers optimized for low‑voltage (2.7 V–5 V) and higher‑voltage (2.7 V–36 V) applications respectively. They offer rail‑to‑rail output, low offset voltage (+250 µV max), high common‑mode rejection (124 dB), and high open‑loop gain (128 dB), making them suitable for battery‑operated instruments, portable devices, medical instruments, and test equipment.
The devices are offered in single, dual, and quad configurations with 8‑pin DIP, SO‑8, 14‑pin DIP, and SO‑14 packages. Detailed specifications, absolute maximum ratings, typical performance curves, and quiescent‑current data are provided for each version, along with package‑ordering information and production‑distribution charts.
| Supply voltage range (single) | +2.7 V to +36 V |
|---|---|
| Supply voltage range (dual) | +1.35 V to +18 V |
| Input offset voltage | +250 µV max |
| Gain‑bandwidth product | 35 kHz |
| Open‑loop gain | 128 dB |
It can operate from a single supply of +2.7 V to +36 V or a dual supply of +1.35 V to +18 V.
The maximum input offset voltage is +250 µV.