The OPAx863 devices are low-power, unity-gain stable, rail-to-rail input or output, voltage-feedback operational amplifiers designed to operate over a power supply range of 2.7-V to 12.6-V. Consuming only 700-µA per channel, the OPAx863 devices offer a gain-bandwidth product of 50-MHz, slew rate of 105-V/µs with a voltage noise density of 5.9-nV/√ Hz.
The rail-to-rail input stage with 2.7-V supply operation is useful in portable battery powered applications. The differential input stages are well matched for gain-bandwidth product and noise across the full input common-mode voltage range, enabling superior performance with wide-input dynamic range. The OPA863 features a power-down (PD) mode with a PD quiescent current of 1.5-µA (maximum) with turn-on or turn-off within 10-µs (typical).
The OPAx863A devices include overload power limiting to limit the increase in quiescent current with saturated outputs, thereby preventing excessive dissipation critical in battery-powered systems. The output stage is short-circuit protected, making it a rugged amplifier for general-purpose usage.