TS472

TS472 Very low noise microphone preamplifier with 2.0 V bias output and active low standby mode Features ■ Low noise: 10 nV/√Hz typ. equivalent input noise at F = 1 kHz ■ Fully-differential input/output ■ 2.2 to 5.5 V single supply operation ■ Low power consumption at 20 dB: 1.8 mA ■ Fast start up time at 0 dB: 5 ms typ. ■ Low distortion: 0.1% typ. ■ 40 kHz bandwidth regardless of the gain ■ Active low standby mode function (1 μA max) ■ Low noise 2.0 V microphone bias output ■ Available in flip-chip lead-free package and in QFN24 4 x 4 mm package ■ ESD protection (2 kV) Applications ■ Video and photo cameras with sound input ■ Sound acquisition and voice recognition ■ Video conference systems ■ Notebook computers and PDAs Description The TS472 is a differential-input microphone preamplifier optimized for high-performance PDA and notebook audio systems. This device features an adjustable gain from 0 to 40 dB with excellent power-supply and commonmode re...