UTC 8507
COMPANDER
DESCRIPTION
LINEAR INTEGRATED CIRCUIT
The UTC 8507 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.
The UTC 8507 includes compressor, expander,
pre-amp, filter amp, limiter and mute/bypath logic.
SOP-20
FEATURES
* Wide Supply Voltage (2.4 ~ 7V )
* Easy Gain Control
* Mute/Bypath Logic
* Data In/Out Pin
DIP-20
PIN CONFIGURATION
FO
1
FI
2
CO
3
DI
4
AGIC
5
CRC
6
CPI-
7
CPI+
8
CB
9
GND
10
20
Vcc
19
EO
18
ERC
17
DO
16
EPI-
15
EPI+
14
EB
13
EMUTE
12
BYPATH
11
CMUTE
UTC
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R123-006,B
UTC 8507
PIN DESCRIPTION
PIN No.
1
2
3
4
5
6
7
8
9
10
LINEAR INTEGRATED CIRCUIT
DESCRIPTON
Filter Amp Output
Filter Amp Input
Compressor Output
Data Input
AC Gain Infinity Capacitor
Compressor Rectifier Capacitor
Compressor Inverting Input
Compressor Non-Inverting Input
Compressor Reference Bias
Ground
SYMBOL
FO
FI
CO
DI
AGIC
CRC
CPI-
CPI+
CB
GND
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
BLOCK DIAGRAM
AGIC
5
Bypath
CRC
6
Rectifier
Variable
Resistor
5.1K
CPI- 7
CPI+ 8
3.3k
Compressor
Mute
Summing
Amp
CB
Bypath
EPI- 16
EPI+ 15
13 EMUTE
Variable
Resistor
Rectifier
17
DO
18
ERC
Summing
Amp
Expandor
Mute
19
EO
Bias Circuit
9
CB
14
EB
10
GND
20 Vcc
11 CMUTE
Limiter
Logic
12 BYPATH
DI
4
CO
3
Compressor
Output Buffer
FI
2
Filter Amp
+
1 Fo
-
-
+
-
+
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Supply Voltage
Power Dissipation
DIP-20
SOP-20
Operating Temperature
Storage Temperature
SYMBOL
Vcc
P
D
Topr
Tstg
RATINGS
10
1000
410
-20 ~ +70
-55 ~ +150
UNIT
V
mW
°C
°C
UTC
UNISONIC TECHNOLOGIES CO., LTD.
2
QW-R123-006,B
UTC 8507
PARAMETER
LINEAR INTEGRATED CIRCUIT
SYMBOL
TEST CONDITIONS
No signal
Vout=300mVrms=0dB
Vin=-20dB
Vin=-40dB
Vin=0dB,BYPATH=GND
Vin=0dB
Rg=620Ω
Vin=0dB,CMUTE=GND
8.0
-0.5
-1.0
-1.5
ELECTRICAL CHARACTERISTICS
(Vcc=3V,f=1kHz,Ta=25℃,unless otherwise noted)
MIN
TYP
2.4
4.0
12.5
0
0
0
0.5
3.0
80
1.35
130
0
0
0
0
0.5
10.0
80
800
MAX
7.0
6.5
17.0
+0.5
+1.0
+1.5
1.0
5.5
1.50
160
+0.5
+1.0
+2.0
+0.5
1.5
30.0
UNIT
V
mA
mVrms
dB
dB
%
mVrms
dB
Vp-p
mVrms
dB
dB
%
μVrms
dB
mVrms
DC ELECTRICAL CHARACTERISTICS
Operating Voltage
Vcc
Operating Current
Icc
COMPRESSOR PART
Standard Input Voltage (0dB)
V
I (COMP)
Gain Difference
△Gv
1 (COMP)
△Gv
2 (COMP)
Bypath Gain Difference
△G
VB (COMP)
Output Distortion
THD
COMP
Noise Output Voltage
V
NO (COMP)
Mute Attenuation Ratio
ATT
MUTE
Limiting Voltage
V
LIM (COMP)
EXPANDER PART
Standard Output Level (0dB)
Vo
(EXP)
△Gv
1 (EXP)
Gain Difference
△Gv
2 (EXP)
△Gv
3 (EXP)
Bypath Gain Difference
△Gv
B (EXP)
Output Distortion
THD
EXP
Noise Output Voltage
V
NO (EXP)
Mute Attenuation Ratio
ATT
MUTE
Limiting Voltage
V
OEXP (MAX)
60
1.15
110
-0.5
-1.0
-1.5
-2.5
Vin=30mVrms=0dB
Vin=-10dB-0.5
Vin=-20dB
Vin=-30dB
Vin=0dB,BYPATH=GND
Vin=0dB
Rg=620Ω
Vin=0dB,EMUTE=GND
THD=10%
60
700
UTC
UNISONIC TECHNOLOGIES CO., LTD.
3
QW-R123-006,B
UTC 8507
TEST CIRCUIT
LINEAR INTEGRATED CIRCUIT
COMP OUT
10k
100k
1μF
+
1
FO
Vcc
20
10μF
+
Vcc
EXP OUT
10K
+
2
1μF
+
3
FI
EO
19
+
1.0μF
CO
ERC
18
2.2μF
4
22μF
+
2.2μF
+
9.1k
0.47μF
+
474
8
COMP
IN
620
9
6
5
DI
DO
17
51K
50pF
10K
474
+
AGIC
EPI-
16
1.0μF
CRC
EPI+
15
100k
620
EXP IN
7
CPI-
EB
14
+
4.7μF
CPI+
EMUTE
13
SW3
12
SW2
+
4.7μF
CB
BYPATH
10
GND
CMUTE
11
SW1
UTC
UNISONIC TECHNOLOGIES CO., LTD.
4
QW-R123-006,B
LINEAR INTEGRATED CIRCUIT
Data output
Speaker
473
390K
2.2μF
33K
18
17
16
15
14
Vcc
+
47μF
20
19
473
+
0.47μF +
10K
104
47K
Expander
input
Expander
Mute
Compressor
Mute
+
10μF
13
12
11
-
REG
+
LOGIC
Exp
APPLICATION CIRCUIT (HAND SET)
-
-
Comp
+
REG
-
+
51K
Filter
Amp
3.3K
1
2
3
4
33K
33K
TO TX
Modulation
104
132
5.6K
101
120K
39K
473
5
+
22μF
6
+
2.2μF
7
+
1μF
8.2K
8
9
2.2K
223
103
10
UTC 8507
MIC
UTC
UNISONIC TECHNOLOGIES CO., LTD.
+
QW-R123-006,B
5
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