YOUDA INTEGRATED CIRCUIT
YD5020
LOW VOLTAGE COMPANDER--YD5020
DESCRIPTION
The YD5020 contains two variable gain circuits configured for compressing and expanding the dynamic range
of an audio signal. One circuit is configured as an expander, while the other circuit can be configured as a compressor
or expander. Each circuit has a full wave rectifier to provide average value information to a variable gain cell located
in either the input stage or the feedback path.
FEATURES
*Low voltage operation: Vopr=1.85.0V
*Decreasing external component
*Built in compressor and expander mute circuit
*Unity gain level set a 100mVrms
*Response time adjustable
BLOCK DIAGRAM
1
2
3
4
5
6
7
8
9
10
11
12
13
14
VB
VB
Bais
_
Mute
Mute
_
Gain
RECT
Gain
RECT
+
+
Vcc
Vref
VB
GND
WuXi YouDa Electronics Co., Ltd
Add: No.5 Xijin Road, National Hi-Tech Industrial Development Zone, Wuxi Jiangsu China
Tel: 86-510-85205117 86-510-85205106 Fax: 86-510-85205110 Website: www.e-youda.com
SHENZHEN OFFICE Tel 86-755-83740369 Fax 86-755-83741418
Ver 5.0 1 of 4 2006-08-11
YOUDA INTEGRATED CIRCUIT
YD5020
PIN NO.
SYMBOL
PIN NO.
SYMBOL
1 Vref 8
COM
FEED
2
EXP MUTE
9
COM CF
3
EXP FILTER
10
COM INPUT
4
EXP OUTPUT
11
COM OUTPUT
5
EXP INPUT
12
COM FILTER
6 VB 13
COM
MUTE
7 GND 14 Vcc
ABSOLUTE MAXIMUM RATINGS
(Tamb=25)
PARAMETER SYMBOL
VALUE
UNIT
Supply Voltage
Vcc
10
V
Power Dissipation
P
D
410
mW
Operating Temperature
Topr
-20+75
Storage Temperature
Tstg
-55+150
OPERATION CONDITIONS
(Vcc=3V,Tamb=25,Unless otherwise specified)
PARAMETER SYMBOL
VALUE
UNIT
Supply Voltage
Vcc
1.85.0 V
Input Frequency Range
fin
10020k Hz
Compressor Input Voltage
Vinc
700
mVrms
Expander Input Voltage
Vine
316
mVrms
WuXi YouDa Electronics Co., Ltd 2of 4 Website: www.e-youda.com
YOUDA INTEGRATED CIRCUIT
YD5020
ELECTRICAL CHARACTERISTICS
(Vcc=3V,Tamb=25,f=1kHz,Unless otherwise specified)
Parameter Symbol
Test
Condition Min.
Typ.
Max.
Unit
Supply Current
Iccq
Vin=0
3.1
mA
Compressor
0dB Gain
G
C0
Vinc=100mV0dB -1.5
0
1.5
dB
G
C1
Vinc=316mV10dB -1.0
0
1.0
dB
G
C2
Vinc=10mV-20dB -1.0
0
1.0
dB
G
C3
Vinc=1mV-40dB -1.0
0
1.0
dB
Gain ErrorNote
G
C4
Vinc=100V-60dB -1.0
0
1.0
dB
Distortion THD
C
Vinc=100mVf=1kHz
0.3
1.5
%
Noise Output
V
N0c
Rg=600
0.8
5.0
mV
Ripple Rejection Ratio
RR
C
Vcc=1kHz3V(DC)100mV -25 -18 dB
Cross TalkCE CTc Vinc=100mVEXP Output
-72
-50
dB
Muting Attenuation
Attc
Vinc=100mVVpin13=GND -65 -50 dB
Input Impedance
Rinc
PIN 10
20
k
Expander Section
0dB Gain
G
e0
Vine=100mV0dB -1.5
0
1.5
dB
G
e1
Vine=178mV5dB -1
0
1
dB
G
e2
Vine=31.6mV-10dB -1
0
1
dB
G
e3
Vine=10mV-20dB -1
0
1
dB
Gain ErrorNote
G
e4
Vine=3.16mV-30dB -1
0
1
dB
Distortion THDe
Vine=100mVf=1kHz
0.4
1.5
%
Noise Output
V
N0e
Rg=600
0.06
5.0
mV
Ripple Rejection Ratio
RR
e
Vcc=1kHz3V(DC)100mV -58 -38 dB
CrossTalkEC CTe Vine=100mVCOM Output
-34
-24
dB
Muting Attenuation
Atte
Vine=316mVVpin2=GND -70
-50 dB
Input Impedance
Rine
PIN 4
4.3
k
Note1 Gain Error=Vout-20dBVinK Compressor: K=0.5 Expander: K=2
WuXi YouDa Electronics Co., Ltd 3of 4 Website: www.e-youda.com
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