The OPA3S328 amplifiers and switches operate on a single-supply voltage (2.2 V to 5.5 V), or a dual-supply voltage (±1.1 V to ±2.75 V), making these devices highly versatile, and easy to use with low supply rails. Use local bypass ceramic capacitors (typically, 0.001 µF to 0.1 µF) to ground on the power-supply pins, as well as a bypass capacitor connected between the positive and negative supply pins for dual-supply operation.

The digital input pins for switch and shutdown control (SELA0, SELA1, SELB0, SELB1) are referenced to the V+ supply for the positive rail, and to the digital ground (GND pin) for the negative rail. The GND pin can be forced to any voltage greater than V– and less than V+. However, the voltage between GND and V+ must be greater than the minimum requirement for the digital circuit block operation; see Section 7.4. For single-supply use cases, connect GND to V–.

The OPA3S328 amplifiers are fully specified from 2.2 V to 5.5 V and over the temperature range of –40°C to +125°C.