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YD2025H
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YOUDA INTEGRATED CIRCUIT YD2025H
2.4W STEREO AUDIO AMPLIFIER——YD2025H
DESCRIPTION The YD2025H is a monolithic integrated audio amplifier in a 16-pin plastic dual in line package. It is designed
for portable cassette players and radios.
FEATURES *Working Voltage down to 3V *Few External components *High channel isolation *Voltage gain up to 45dB (Adjustable with external resistor) *Soft clipping *Internal Thermal protection
BLOCK DIAGRAM
1 2 3 4 5 6
789101112
-
+
+
-
5k
50
RIPPLE FILTER
TAB
TAB
Pre-GNDVcc
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 2006-06-28
YOUDA INTEGRATED CIRCUIT YD2025H
ABSOLUTE MAXIMUM RATINGS (Tamb=25)
PARAMETER SYMBOL VALUE UNIT
Supply Voltage Vcc 15 V Output Peak Current Iop 1.5 A
80*60*1.2mm3 PCB PD 3.5 W Power Dissipation No Heat Sink PD 1.6 W Ambient operating temperature range Topr -20～+75
Storage Temperature Tstg -40～+150
Electrical CHARACTERISTICS (Tamb=20, Vcc=9V, f=1kHz, Stereo, Unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS NIN TYP MAX UNIT
Supply Voltage Vcc 3 12 V Quiescent Current Iccq 40 50 mA Quiescent Output
Voltage Vo 4.5 V
Stereo 43 45 47 Voltage Gain Gv
Bridge 49 51 53 dB
Voltage Gain Difference ΔGv ±1 dB Input Impedance Zi 30 kΩ
Vcc=9V, RL=4Ω 1.7 2.4 Vcc=9V, RL=8Ω 1.3 Vcc=6V, RL=4Ω 0.7 1.0 Vcc=6V, RL=8Ω 0.6
Output Power (STEREO)
Vcc=3V, RL=4Ω 0.1 Vcc=9V, RL=8Ω 4.7 Output Power
(BTL)
Po (THD =10%)
Vcc=6V, RL=4Ω 2.8
W
Stereo ,RL=4Ω, Po=250mW 0.3 1.5 Distortion THD BTL,RL=4Ω, Po=250mW 0.5 %
Supply Voltage Rejection RR Rg=0, GV=45dB,
Vr=150mV, f=100Hz 40 46 dB
Rg=0 1.5 3 Input Noise Voltage VNI
GV=45dB, BPF=20Hz ～20kHz Rg=10kΩ 3 6
μV
Cross-Talk CT Rg=10kΩ, f=1kHz, RL=4Ω, Po=1W 40 55 dB
WuXi YouDa Electronics Co., Ltd 2 of4 Website: www.e-youda.com
YOUDA INTEGRATED CIRCUIT YD2025H
APPLICATION CIRCUIT (1) YD2025H TYPE APPLICATION
126
4
5
8
9
+100μ
+
2.2μ
+100μ
+
2.2μ
+
470μ 0.1μ
+100μ
Vcc
IN 1
IN 2
2
3
10
+100μ
+
470μ
0.15μ
RL
11
+100μ
+
470μ
0.15μ
RL
1
+
_
_
+
7 TAB
(2) YD2025H BTL APPLICATION
12
7
6
4
6
8
9
+
100μ
+
100μ
+
2.2μ
+
470μ
+
100μ
Vcc
IN
1
2
3
10
+100μ
0.15μ
11
+100μ
0.15μ
RL
+
_
_
+
TAB
WuXi YouDa Electronics Co., Ltd 3 of 4 Website: www.e-youda.com
YOUDA INTEGRATED CIRCUIT YD2025H
OUTLINE DRAWING
WuXi YouDa Electronics Co., Ltd 4 of 4 Website: www.e-youda.com
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