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TS472 Datasheet

  • TS472

  • Very Low Noise Microphone Preamplifier with 2V Biased Output...

  • 20頁

  • STMICROELECTRONICS   STMICROELECTRONICS

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TS472
Very Low Noise Microphone Preamplifier
with 2V Biased Output and Active Low Standby Mode
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Low noise: 10nV/鈭欻z 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 @ -3dB and adjustable
Active low standby mode function (1碌A(chǔ) max)
Low noise 2.0V microphone bias output
Available in flip-chip lead-free package
ESD protection (2kV)
Flip-chip - 12 bumps
Pin Connections (top view)
C1
C2
STDBY
VCC
OUTPUT
BIAS
GS
OUT+
OUT-
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.
IN+
IN-
GND
BYPASS
Applications
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Video and photo cameras with sound input
Sound acquisition & voice recognition
Video conference systems
Notebook computers and PDAs
Order Codes
Part Number
TS472EIJT
Temperature Range
-40, +85擄C
Package
Flip-Chip
Packing
Tape & Reel
Marking
472
October 2005
Rev 2
1/20
www.st.com
20

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