GL6552 Ver la hoja de datos (PDF) - Hynix Semiconductor

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GL6552

Low Voltage Compander

Hynix Semiconductor 

GL6552

Pin Description

No.

Symbol

1 VREF

2 EXP IN

3 EXP RECT

4 EXP OUT

5 EXP MUTE

6 COMP MUTE

7 GND

8 COMP IN

9 COMP NF

10 COMP RECT

11 C-ACF

12 COMP OUT

13 ALC

14 VCC

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

3

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