TS472 datasheet(1/25 Pages) STMICROELECTRONICS

部件名	TS472

功能描述	Very low noise microphone preamplifier with 2.0 V bias output and active low standby mode

PDF	25 Pages

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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1 / 25 page

August 2009

Doc ID 11015 Rev 6

1/25

25

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 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.

Flip-chip - 12 bumps

Pin connections (top view)

QFN24

Pin connections (top view)

1

2

3

4

5

6

7

13

14

15

16

17

18

19

20

21

22

23

24

NC

BYP

NC

GND

IN-

8

9

10

11

12

NC

IN+

GS

BIAS

C1

C2

OUT-

OUT+

GND STBY VCC

www.st.com

类似零件编号 - TS472

制造商	部件名	数据表	功能描述
STMicroelectronics	TS472	611Kb / 20P	Very Low Noise Microphone Preamplifier with 2V Biased Output and Active Low Standby Mode Oct-2005
	TS472	624Kb / 24P	Very low noise microphone preamplifier with 2.0V bias output and active low standby mode 12-Sep-2006
	TS472EIJT	611Kb / 20P	Very Low Noise Microphone Preamplifier with 2V Biased Output and Active Low Standby Mode Oct-2005
	TS472EIJT	624Kb / 24P	Very low noise microphone preamplifier with 2.0V bias output and active low standby mode 12-Sep-2006
	TS472IQT	624Kb / 24P	Very low noise microphone preamplifier with 2.0V bias output and active low standby mode 12-Sep-2006

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