參數(shù)資料
型號(hào)： TS472IQT
廠商： STMICROELECTRONICS
元件分類： 音頻／視頻放大
英文描述： 1 CHANNEL, AUDIO PREAMPLIFIER, QCC24
封裝： 4 X 4 MM, LEAD FREE, QFN-24
文件頁(yè)數(shù)： 1/24頁(yè)
文件大?。?/td> 622K
代理商： TS472IQT
September 2006
Rev 4
1/24
24
TS472
Very low noise microphone preamplifier with
2.0V bias output and active low standby mode
Features
■ Low noise: 10nV/
√Hz typ. equivalent input
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 (1
μA max)
■ Low noise 2.0V microphone bias output
■ Available in flip-chip lead-free package and in
QFN24 4x4mm package
■ ESD protection (2kV)
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.
Applications
■ Video and photo cameras with sound input
■ Sound acquisition & voice recognition
■ Video conference systems
■ Notebook computers and PDAs
IN+
IN-
GND
OUT+
C2
C1
OUTPUT
BIAS
GS
VCC
OUT-
STDBY
BYPASS
Flip-chip - 12 bumps
Pin Connections (top view)
QFN24
Pin Connection (top view)
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