GL6552
GL6552
Low Voltage Compander
Pin Configuration
General Descriptions
The GL6552 is a Compander IC, which
contains two variable gain circuits configured
for compressing and expanding the dynamic
range, and improving of S/N ratio of audio
signal. It consists of compressor, expander, Mic
VREF
VCC
Amp,
limiter,
ALC(Automatic
Level
EXP IN
EXP RECT
EXP OUT
ALC
Control)and mute logic. The compressor circuit
has the 2/1 ratio of input/output ratio by
logarithm, and the expander circuit by
logarithm. An internal, temperature stable
bandgap reference provides the necessary
precision voltage and current. Applications
include cordless telephone and most voice RF
links.
COMP OUT
C-ACF
GL6552
COMP RECT
COMP NF
EXP MUTE
COMP MUTE
GND
COMP IN
Features
· Operating Supply Voltage: 2 ~ 6 V
· Built in ALC circuit
14 DIP, 14 SOP(150mil)
· Built in Mute logic circuit
· Easy gain control to use external component
Absolute Maximum Ratings(Ta = 25¡ .É)
Parameter
Symbol
Spec.
7
Unit
V
Remark
Max. Supply Voltage
VCC, MAX
Power Dissipation
PD.MAX
TSTG
600
mW
Storage Temperature
-55 ~+150
¡ É
Stress above those listed under “Absolute Maximum Rating” may cause permanent damage of device.
This is stress rating only and functional operation of the device at these or any other conditions above
those indicated in the operational sections of this specification is not implied.
Exposure to absolute maximum rating conditions for longer periods may affect device reliability.
During overload conditions (VIN > VCC or VIN <GND), those voltage on VCC pins with respect to ground
must not exceed the values defined by the absolute maximum ratings.
Operating Conditions (Ta = 25¡ É
)
Parameter
symbol
VOP
Spec.
2 ~ 6
Unit
V
Remark
Operating Voltage
Operating Temperature
TOP
-20 ~ +70
¡ É
1