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Wuxi Youda
Wuxi Youda


YD2025A

2.4W Stereo Audio Power Amplifier



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YD2025A pdf
YOUDA INTEGRATED CIRCUIT
YD2025A
2.4W STEREO AUDIO POWER AMP YD2025A
DESCRIPTION
The YD2025A is a monolithic integrated circuit consisting of a 2-channel power amplifier. It is suitable for
stereo and bridge amplifier application of radio cassette tape recorder.
FEATURES
*High output power
Stereo: Po=2.4W(Typ) at Vcc=9V, RL=4
Bridge: Po=4.7W(Typ) at Vcc=9V, RL=8
*Small shock noise at the time of power on/off due to a built-in muting circuit
*Good ripple rejection due to a built-in ripple filter
*Good channel separation
*Soft tone at the time of output saturation
*Closed loop voltage gain fixed 45dB(Bridge: 51dB) but availability with external resistor added
*Minimum number of external parts required
BLOCK DIAGRAM
16
Vcc
15
14
13 GND 12
11
10 9
Pre-GND
5k -
+
+
50 -
GND
12345678
WuXi YouDa Electronics Co., Ltd
Add: No.5 Xijin Road, National Hi-Tech Industrial Development Zone, Wuxi Jiangsu China
Tel: 86-510-5205117 86-510-5205108 Fax: 86-510-5205110
Website: www.e-youda.com
SHENZHEN OFFICE Tel 86-755-83740369 13823533350 Fax 86-755-83741418
Ver 3.1
1 of 4
2004-9-20



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YD2025A pdf
YOUDAINTEGRATED CIRCUIT
YD2025A
ABSOLUTE MAXIMUM RATINGS (Tamb=25 )
PARAMETER
Supply Voltage
Vi=0
Vi>0
Output Peak Current
Power Dissipation
Operating Temperature
Storage Temperature
SYMBOL
VCC
IO(P)
PD
Topr
Tstg
VALUE
20
16
2.5
4
-25 +70
-55 +150
UNIT
V
A
W
ELECTRICAL CHARACTERISTICS
(Tamb=25 , Vcc=9V, f=1kHz, Rg=600 , Unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
Operating Supply
Voltage
Quiescent Circuit
Current
Vcc
ICCQ
Vi>0
Vi=0
Output Power
Total Harmonic
Distortion
PO
THD
THD=10%, RL=4
THD=10%, RL=3
PO=0.4W/CH
Closed Loop Voltage
Gain
Gv
Stereo
Bridge
Input Resistance
Output Noise Voltage
Ripple Rejection Ratio
Zi
VNO
RR
f=1kHz
Rg=10k ,
BPF=22Hz 22kHz
F=100Hz, Rg=600
Cross-Talk
CT
VO=0dBm
MIN TYP MAX UNIT
9 15
V
26 40 mA
2.0 2.4
3.0
W/CH
0.2 1.0
%
43 45 47
49 51 53
dB
30 k
0.3 1.0 mV
46
46 55
dB
dB
WuXi YouDa Electronics Co., Ltd
2 of 4
Website: www.e-youda.com



Part Number YD2025A
Description 2.4W Stereo Audio Power Amplifier
Maker Wuxi Youda - Wuxi Youda
Total Page 4 Pages
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