YD5020 Datasheet, PDF (1/4 Pages) Wuxi Youda electronics Co.,LTD – LOW VOLTAGE COMPANDER

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=1.8～5.0V
*Decreasing external component
*Built in compressor and expander mute circuit
*Unity gain level set a 100mVrms
*Response time adjustable
BLOCK DIAGRAM
14
13
12
Vcc
Mute
Mute
Vref
1
2
3
11
10
9
8
_
+
VB
_
+
VB
4
5
Gain
RECT
Gain
RECT
VB ^GND
6
7
WuXi YouDa Electronics Co., Ltd
Add: No.5 Xijin Road, National Hi-Tech Industrial Development Zone, Wuxi Jiangsu China
Tel: [phone] Fax: [phone]
Website: www.e-youda.com
SHENZHEN OFFICE Tel： 86-755-83740369
Fax： 86-755-83741418
Ver 5.0
1 of 4
2006-08-11