The OPA379 is a low-noise, low-power operational amplifier that operates from a supply voltage as low as 1.8V. It is suitable for a wide range of battery-powered applications, such as portable devices, medical instruments, and handheld test equipment. The OPA379 features impressive bandwidth (90kHz), low bias current (25pA), and low noise (80nV/√Hz) relative to the very low quiescent current (5.5µA max).
The OPA379 family of micropower, low‑voltage operational amplifiers is designed for battery‑powered and portable applications. They operate from a supply voltage as low as 1.8 V and offer rail‑to‑rail input and output capability, making them suitable for handheld test equipment, medical instruments, and other portable devices.
Key electrical characteristics include a typical quiescent current of 2.9 µA per amplifier, a gain‑bandwidth product of 90 kHz, low offset voltage (0.4 mV typical), and high CMRR of 100 dB. The devices are offered in SC70‑5, SOT23‑5, and SO‑8 packages (single), with dual and quad versions in larger packages.
| Supply Voltage Range | 1.8 V to 5.5 V |
|---|---|
| Quiescent Current per Amplifier | 2.9 µA (typical) |
| Gain‑Bandwidth Product | 90 kHz |
| Input Voltage Noise Density (1 kHz) | 80 nV/√Hz |
| Common‑Mode Rejection Ratio | 100 dB |
| Typical Offset Voltage (5 V supply) | 0.4 mV |
| Available Packages (OPA379 single) | SC70‑5, SOT23‑5, SO‑8 |
The OPA379 series operates from 1.8 V up to 5.5 V.
Typical quiescent current is 2.9 µA per amplifier.
The OPA379 single is offered in SC70‑5, SOT23‑5, and SO‑8 packages.
The typical offset voltage is 0.4 mV.