7.1 Overview

The OPA837 and OPA2837 are single- and dual-channel, power efficient, unity-gain stable, voltage-feedback amplifiers (VFAs). Combining a negative rail input stage and a rail-to-rail output (RRO) stage, the OPAx837 provides a flexible solution where exceptional precision and wide bandwidth at low power are required. This
50-MHz gain bandwidth product (GBP) amplifier requires less than 0.65 mA of supply current per channel over a 2.7-V to 5.4-V total supply operating range. A shutdown feature on the OPA837 6-pin package version provides power savings where the system requires less than 10 µA when shut down. Offering a unity-gain bandwidth greater than 100 MHz, the OPAx837 provides less than –118-dBc THD at 100 kHz and a 2-V_PP output.