AN6215S Datasheet, PDF (1/5 Pages) Panasonic Semiconductor – AGC IC for telephone speech network

ICs for Telephone
AN6215S
AGC IC for telephone speech network
s Overview
The AN6215S is an AGC IC for telephone speech
network, and it incorporates an microphone input detec-
tion circuit and a receiver gain control circuit. It is espe-
cially best suited for cordless telephone thanks to a good
speech tone quality obtained by reducing howling and echo
sound.
s Features
• Operation with wide power supply voltage range from
2.1 V to 6.0 V
• Enlargement of dynamic range by incorporating a vari-
able V_REF circuit that varies according to the supply
voltage
• Possible to adjust the received voice attenuation amount
with an external resistor
• Possible to adjust the AGC operating point with an ex-
ternal resistor
• Possible to design with fewer external components
Unit: mm
1
8
2
7
3
6
4
5
0.3
4.2 ± 0.3
6.5 ± 0.3
SOP008-P-0225A
s Block Diagram
V_REF
Det.
CC
Buff
1