The THS4031 and THS4032 are ultralow-voltage noise, high-speed voltage feedback amplifiers that are ideal for applications requiring low voltage noise, including communication and imaging. The single-amplifier THS4031 and the dual-amplifier THS4032 offer very good ac performance with 100-MHz bandwidth, 100-V/s slew rate, and 60-ns settling time (0.1%). The THS4031 and THS4032 are stable at gains of 2 (1) or greater. These amplifiers have a high drive capability of 90 mA and draw only 8.5-mA supply current per channel. With total harmonic distortion (THD) of 72 dBc at f = 1 MHz, the THS4031 and THS4032 are ideally suited for applications requiring low distortion.