UTC 8507
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R123-006,B
COMPANDER
DESCRIPTION
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.
FEATURES
* Wide Supply Voltage (2.4 ~ 7V )
* Easy Gain Control
* Mute/Bypath Logic
* Data In/Out Pin
SOP-20
DIP-20
PIN CONFIGURATION
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
CMUTE
BYPATH
EMUTE
EB
EPI+
EPI-
DO
ERC
EO
Vcc
UTC 8507
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
2
QW-R123-006,B
PIN DESCRIPTION
PIN No. SYMBOL
DESCRIPTON
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 Vcc
Supply
Voltage
BLOCK DIAGRAM
5
6
7
8
16
15
17
18
19
4
3
2
1
9
14
10
11
12
13
20
Rectifier
Variable
Resistor
Summing
Amp
CB
5.1K
3.3k
CPI-
CPI+
EPI-
EPI+
DO
ERC
EO
CB
EB GND
Vcc
EMUTE
BYPATH
CMUTE
Fo
-
+
-
+
Rectifier
Expandor
Mute
Summing
Amp
Variable
Resistor
Bypath
Bias Circuit
Logic
Filter Amp
+
-
FI
CO
DI
CRC
Compressor
Output Buffer
Compressor
Mute
Limiter
Bypath
AGIC
ABSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL RATINGS
UNIT
Supply Voltage
Vcc
10
V
Power Dissipation
DIP-20
SOP-20
P
D
1000
410
mW
Operating Temperature
Topr
-20 ~ +70
C
Storage Temperature
Tstg
-55 ~ +150
C
UTC 8507
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
3
QW-R123-006,B
ELECTRICAL CHARACTERISTICS
(Vcc=3V,f=1kHz,Ta=25,unless otherwise noted)
PARAMETER SYMBOL
TEST
CONDITIONS
MIN
TYP
MAX
UNIT
DC ELECTRICAL CHARACTERISTICS
Operating Voltage
Vcc
2.4
7.0
V
Operating Current
Icc
No signal
4.0
6.5
mA
COMPRESSOR PART
Standard Input Voltage (0dB)
V
I (COMP)
Vout=300mVrms=0dB
8.0 12.5 17.0 mVrms
Gv
1 (COMP)
Vin=-20dB -0.5
0
+0.5
Gain Difference
Gv
2 (COMP)
Vin=-40dB -1.0
0
+1.0
dB
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=620
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)
Vo
(EXP)
Vin=30mVrms=0dB
110 130 160
mVrms
Gv
1 (EXP)
Vin=-10dB-0.5 -0.5
0
+0.5
Gv
2 (EXP)
Vin=-20dB -1.0
0
+1.0
Gain Difference
Gv
3 (EXP)
Vin=-30dB -1.5
0
+2.0
dB
Bypath Gain Difference
Gv
B (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=620
10.0
30.0
Vrms
Mute Attenuation Ratio
ATT
MUTE
Vin=0dB,EMUTE=GND
60
80
dB
Limiting Voltage
V
OEXP (MAX)
THD=10% 700
800
mVrms
UTC 8507
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
4
QW-R123-006,B
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
CMUTE
BYPATH
EMUTE
EB
EPI+
EPI-
DO
ERC
EO
Vcc
SW3
SW2
SW1
COMP OUT
1F
10k
+
100k
1F
+
22F
2.2F
0.47F
+
+
9.1k
474
COMP
IN
4.7F
+
100k
620
EXP IN
1.0F
+
474
51K
50pF
2.2F
+
10K
1.0F
+
10F
Vcc
+
10K
620
4.7F
+
+
EXP OUT
UTC 8507
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
5
QW-R123-006,B
APPLICATION CIRCUIT (HAND SET)
1
+
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
+
33K
TO TX
M
odul
ati
o
n
104
5.6K
132
101
120K
39K
473
33K
22
F
2.2
F
1
F
8.2K
223
103
2.2K
MIC
RE
G
+
+
+
3.3K
51K
+
+
Co
mp
Filte
r
Am
p
Exp
REG
L
OGIC
Compressor
Mu
te
Expander
Mu
te
Expander
i
nput
104
47K
+
10K
33K
390K
473
Speaker
Vcc
+
47
F
2.2
F
473
D
a
ta output
0.47
F
10
F
+
+
-
-
-
-
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