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control system. S1T8507C Datasheet |
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COMPANDER
INTRODUCTION
S1T8507C is a automatic gain control system that is used for dynamic
range compression and expansion.
By companding the signal , this can reduce the noise components.
S1T8507C includes compressor, expander, pre-amp, filter amp, limiter
and mute/bypath logic.
20−DIP−300A
FEATURES
• Wide Supply Voltage ( 2.4 to 7V )
• Easy Gain Control
• Mute/Bypath Logic
• Data In/Out Pin
20−SOP−375
ORDERING INFORMATION
Device
S1T8507C01-D0B0
S1T8507C01-S0B0
Package
20−DIP−300A
20−SOP−375
Operating Temperature
−20°C to +70°C
S1T8507C
1
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S1T8507C
COMPANDER
BLOCK DIAGRAM
CPI- 7
3.3K
5.1K
-
CPI+ 8
+
EPI- 16
EPI+ 15
-
+
AGIC
5
Bypath
CRC
6
Rectifier
Variable
Resistor
Summing
Amp
CB
Bypath
Variable
Resistor
Rectifier
17 18
DO ERC
DI CO
43
Compressor
Output Buffer
Compressor
Mute
FI
2
Filter Amp
+
-
Limiter
Logic
Summing
Amp
Expandor
Mute
19
EO
Bias Circuit
9 14 10
CB EB GND
1 Fo
11 CMUTE
12 BYPATH
13 EMUTE
20 Vcc
PIN CONFIGURATION
FO 1
FI 2
CO 3
DI 4
AGIC 5
CRC 6
CPI- 7
CPI+ 8
CB 9
GND 10
KA8507
S1T8507C
20 Vcc
19 EO
18 ERC
17 DO
16 EPI-
15 EPI+
14 EB
13 EMUTE
12 BYPATH
11 CMUTE
2
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COMPANDER
S1T8507C
PIN DESCRIPTION
Pin No Symbol
Description
1 FO Filter Amp Output
2 FI Filter Amp Input
3 CO Compressor Output
4 DI Data Input
5 AGIC AC Gain Infinity Capacitor
6 CRC Compressor Rectifier Capacitor
7 CPI − Compressor Inverting Input
8 CPI + Compressor Non-Inverting Input
9 CB Compressor Reference Bias
10 GND Ground
Pin No
11
12
13
14
15
16
17
18
19
20
Symbol
CMUTE
BYPATH
EMUTE
EB
EPI +
EPI −
DO
ERC
EO
VCC
Description
Compressor Mute
No companding
Expander Mute
Expander Reference Bias
Expander Non-Inverting Input
Expander Inverting Input
Data Output
Expander Rectifier Capacitor
Expander Output
Supply Voltage
ABSOLUTE MAXIMUM RATINGS
Characteristic
Supply Voltage
Power Dissipation S1T8507C01-D0B0
S1T8507C01-S0B0
Operating Temperature
Storage Temperature
Symbol
VCC
PD
TOPR
TSTG
Value
10
1000
410
− 20 to + 70
− 55 to + 150
Unit
V
mW
°C
°C
3
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