ST TS472IQT

AB 类1-通道（单声道）2.2V ~ 5.5V

Overview

The TS472IQT 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 rejection ratios. In addition, the TS472IQT has a very low noise microphone bias generator of 2 V. It also includes a complete shutdown function, with active low standby mode.

Features

• Low noise: 10 nV/√Hz type. 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 type.

• 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