GL6552
Pin Description
No.
1
2
3
4
5
Symbol
V
REF
EXP IN
EXP RECT
EXP OUT
EXP MUTE
Function
Output terminal of bias circuit (Band Gap of reference). It is an internal
reference voltage used for supplying a constant voltage to the compressor
and the expander.
Expander input terminal
External rectifing capacitor is connected to this terminal. Attack and decay
time of expander is determined by capacitor.
Expander output terminal
It is an expander mute terminal of a compander.
“L” state – expander mute is executed.
“H” state – expander is executed.
It is an compander mute terminal of a compander.
“L” state – compressor mute is executed.
“H” state – compressor is executed.
Ground terminal
Compressor Mic Amp noninverting input terminal. It is used as input
terminal for voice signal.
Compressor Mic Amp inverting input terminal. It is used for determining
Mic Amp gain by resistor
External rectifing capacitor is connected to this terminal. Attack and decay
time of expander is determined by capacitor.
Feedback coupling capacitor is connected to this terminal. Low cut-off
frequency of compressor is determined by this capacitor.
Compressor output terminal.
It is a reference voltage input terminal of ALC. ALC circuit may be turned
off according to the ALC reference voltage.
Supply voltage terminal
6
7
8
9
10
11
12
13
14
COMP MUTE
GND
COMP IN
COMP NF
COMP RECT
C-ACF
COMP OUT
ALC
VCC
3
HYNIX [ HYNIX SEMICONDUCTOR ]
