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Электронный компонент: S1T8507C

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COMPANDER
S1T8507C
1
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.
FEATURES
Wide Supply Voltage ( 2.4 to 7V )
Easy Gain Control
Mute/Bypath Logic
Data In/Out Pin
ORDERING INFORMATION
Device
Package
Operating Temperature
S1T8507C01-D0B0
20
-
DIP
-
300A
-
20
C to +70
C
S1T8507C01-S0B0
20
-
SOP
-
375
20
-
DIP
-
300A
20
-
SOP
-
375
S1T8507C
COMPANDER
2
BLOCK DIAGRAM
PIN CONFIGURATION
7
8
-
+
5
16
15
-
+
6
Rectifier
Variable
Resistor
Summing
Amp
4
3
Compressor
Output Buffer
Compressor
Mute
Limiter
2
-
+
1
17
Bypath
Variable
Resistor
Bypath
18
Rectifier
Summing
Amp
Expandor
Mute
19
9
14
10
Bias Circuit
20
11
12
13
Logic
CB
CPI-
CPI+
EPI-
EPI+
DO
ERC
EO
CB
EB
GND
Vcc
EMUTE
BYPATH
CMUTE
Fo
FI
CO
DI
CRC
AGIC
5.1K
3.3K
Filter Amp
FO
FI
CO
DI
AGIC
CRC
CPI-
CPI
+
CB
GND
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
KA8507
Vcc
EO
ERC
DO
EPI-
EPI+
EB
EMUTE
BYPATH
CMUTE
S1T8507C
COMPANDER
S1T8507C
3
PIN DESCRIPTION
ABSOLUTE MAXIMUM RATINGS
Pin No
Symbol
Description
Pin No
Symbol
Description
1
FO
Filter Amp Output
11
CMUTE
Compressor Mute
2
FI
Filter Amp Input
12
BYPATH
No companding
3
CO
Compressor Output
13
EMUTE
Expander Mute
4
DI
Data Input
14
EB
Expander Reference Bias
5
AGIC
AC Gain Infinity Capacitor
15
EPI +
Expander Non-Inverting Input
6
CRC
Compressor Rectifier Capacitor
16
EPI
-
Expander Inverting Input
7
CPI
-
Compressor Inverting Input
17
DO
Data Output
8
CPI +
Compressor Non-Inverting Input
18
ERC
Expander Rectifier Capacitor
9
CB
Compressor Reference Bias
19
EO
Expander Output
10
GND
Ground
20
V
CC
Supply Voltage
Characteristic
Symbol
Value
Unit
Supply Voltage
V
CC
10
V
Power Dissipation S1T8507C01-D0B0
P
D
1000
mW
S1T8507C01-S0B0
410
Operating Temperature
T
OPR
-
20 to + 70
C
Storage Temperature
T
STG
-
55 to + 150
C
S1T8507C
COMPANDER
4
ELECTRICAL CHARACTERISTICS
(V
CC
= 3V, f = 1kHz, Ta = 25
C, unless otherwise noted)
Characteristic
Symbol
Test Condition
Min.
Typ.
Max.
Unit
DC ELECTRICAL CHARACTERISTICS
Operating Voltage
V
CC
-
-
2.4
7.0
V
Operating Current
I
CC
No Signal
-
4.0
6.5
mA
COMPRESSOR PART
Standard Input Voltage (0dB)
V
I (COMP)
V
CC
= 300mVrms = 0dB
8.0
12.5
17.0
mVrms
Gain Difference
G
V1 (COMP)
Vin =
-
20dB
-
0.5
0
+0.5
dB
G
V2 (COMP)
Vin =
-
40dB
-
1.0
0
+1.0
Bypath Gain Difference
G
VB (COMP)
Vin = 0dB, BYPATH = GND
-
1.5
0
+1.5
dB
Output Distortion
THD
COMP
Vin = 0dB
-
0.5
1.0
%
Noise Output Voltage
V
NO (COMP)
Rg = 620ohm
-
3.0
5.5
mVrms
Mute Attenuation Ratio
ATT
MUTE
Vin = 0dB, CMUTE = GND
60
80
-
dB
Limiting Voltage
V
LIM (COMP)
-
1.15
1.35
1.50
Vp-p
EXPANDER PART
Standard Output Level (0dB)
V
O (EXP)
Vin = 30mVrms = 0dB
110
130
160
mVrms
Gain Difference
G
V1 (EXP)
Vin =
-
10dB-0.5
-
0.5
0
+0.5
dB
G
V2 (EXP)
Vin =
-
20dB
-
1.0
0
+1.0
G
V3 (EXP)
Vin =
-
30dB
-
1.5
0
+2.0
Bypath Gain Difference
G
VB (EXP)
Vin = 0dB, BYPATH = GND
-
2.5
0
+0.5
dB
Output Distortion
THD
EXP
Vin = 0dB
-
0.5
1.5
%
Noise Output Voltage
V
NO (EXP)
Rg = 620ohm
-
10.0
30.0
Vrms
Mute Attenuation Ratio
ATT
MUTE
Vin = 0dB, EMUTE = GND
60
80
-
dB
Max. Output Voltage
V
OEXP (MAX)
THD = 10%
700
800
-
mVrms
COMPANDER
S1T8507C
5
TEST CIRCUIT
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
FO
FI
CO
DI
AGIC
CRC
CPI-
CPI
+
CB
GND
KA8507
Vcc
EO
ERC
DO
EPI-
EPI+
EB
EMUTE
BYPATH
CMUTE
+
+
+
+
+
+
+
+
+
+
COMP OUT
1
F
1
F
100K
22uF
2.2uF
9.1K
0.47uF
COMP
IN
474
620
4.7uF
10uF
Vcc
EXP OUT
1.0uF
10K
2.2uF
51K
50pF
10K
1.0uF
100K
474
620
EXP IN
4.7uF
SW3
SW2
SW1
10K
+
S1T8507C
S1T8507C
COMPANDER
6
APPLICATION CIRCUIT
(HAND SET)
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
-
+
-
+
+
-
+
REG
+
+
+
+
+
+
-
+
REG
LO
GIC
Spe
a
ker
Vc
c
39
0K
47
3
2.
2
F
Da
ta
o
u
t
put
47
3
33
K
10
K
0.
4
7
F
Ex
pa
nde
r
in
put
10
4
47
K
10
F
Ex
pa
nde
r
Mut
e
Co
mpr
e
ss
o
r
Mut
e
Ex
p
Fi
lte
r
Amp
Co
mp
51
K
3.
3K
33
K
TO
TX
Mod
u
l
a
ti
on
5.
6K
10
4
13
2
10
1
12
0K
39
K
33
K
47
3
22
F2
2
F
1
F
8.
2K
22
3
10
3
2.
2K
MI
C
47
F
2.2
F