The ADA4051-1/ADA4051-2 is a 1.8 V micropower zero-drift op amp that features single-supply operation, wide input voltage range, high PSRR and CMRR, and is suitable for applications such as pressure and position sensors, temperature measurements, electronic scales, medical instrumentation, battery-powered equipment, and handheld test equipment.
The ADA4051-1 and ADA4051-2 are CMOS, micropower, zero‑drift operational amplifiers that use a chopping technique to achieve rail‑to‑rail input/output swing, very low offset voltage, and low supply current. They operate from a single supply of 1.8 V to 5.5 V and are designed for battery‑powered, high‑precision applications.
Typical applications include pressure and position sensors, temperature measurements, electronic scales, medical instrumentation, and handheld test equipment. The ADA4051‑1 is offered in 5‑lead SOT‑23 and 5‑lead SC‑70 packages, while the ADA4051‑2 is available in 8‑lead MSOP and 8‑lead LFCSP packages.
| Supply Voltage Range | 1.8 V to 5.5 V |
|---|---|
| Typical Offset Voltage (ADA4051‑2) | 15 µV |
| CMRR (typical) | 110 dB |
| PSRR (typical) | 110 dB |
| Operating Temperature Range | -40 °C to +125 °C |
The ADA4051‑1 is available in 5‑lead SOT‑23 and 5‑lead SC‑70 packages.
The devices operate from –40 °C to +125 °C.
They support a single‑supply voltage from 1.8 V to 5.5 V.