TS472| Datasheet

TS472, TS472EIJT, TS472IQT

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TS472
Very low noise microphone preamplifier with 2.0V bias output and active low standby mode
Features

Flip-chip - 12 bumps

Low noise: 10nV/ typ. equivalent input Hz noise @ F = 1kHz Fully differential input/output 2.2V to 5.5V single supply operation Low power consumption @20dB: 1.8mA Fast start up time @ 0dB: 5ms typ. Low distortion: 0.1% typ. 40kHz bandwidth regardless of the gain Active low standby mode function (1A max) Low noise 2.0V microphone bias output Available in flip-chip lead-free package and in QFN24 4x4mm package ESD protection (2kV) QFN24
C1 C2 STDBY VCC

Pin Connections (top view)

OUTPUT BIAS

OUT+

OUT-

IN+

IN-

GND

BYPASS

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 0dB to 40dB with excellent power-supply and common-mode rejection ratios. In addition, the TS472 has a very low-noise microphone bias generator of 2V. It also includes a complete shutdown function, with active low standby mode.

Pin Connection (top view)

Applications

Video and photo cameras with sound input Sound acquisition & voice recognition Video conference systems Notebook computers and PDAs

September 2006

Rev 4

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