YOUDA INTEGRATED CIRCUIT
YD2025
2.3W STEREO AUDIO AMPLIFIER——YD2025
DESCRIPTION
The YD2025 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
16
Vcc
-
+
15
14
13
12
11
10
9
Pre-GND
GND
5k
50
+
-
GND
1
2
3
4
5
6
7
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 7
2006-06-28
RIPPLE FILTER
8
YOUDA INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Supply Voltage
Output Peak Current
Power
Dissipation
80*60*1.2mm
3
PCB
No Heat Sink
(Tamb=25℃)
SYMBOL
Vcc
Io
P
D
1
P
D
2
Topr
Tstg
VALUE
15
1.5
3.0
1.5
-20½+75
-40½+150
YD2025
UNIT
V
A
W
W
℃
℃
Ambient operating temperature
Storage Temperature
Electrical CHARACTERISTICS
(Tamb=25℃, Vcc=9V, f=1kHz, Stereo, Unless otherwise specified)
PARAMETER
Supply Voltage
Quiescent Current
Quiescent Output
Voltage
Voltage Gain
Voltage Gain Difference
Input Impedance
Output Power
(STEREO)
Output Power
(BTL)
Distortion
Supply Voltage
Rejection
Input Noise Voltage
Cross-Talk
THD
RR
V
NI
CT
SYMBOL
Vcc
Iccq
Vo
Gv
ΔGv
Zi
Vcc=9V, R
L
=4Ω
Vcc=9V, R
L
=8Ω
Vcc=6V, R
L
=4Ω
Vcc=6V, R
L
=8Ω
Vcc=3V, R
L
=4Ω
Vcc=9V, R
L
=8Ω
Vcc=6V, R
L
=4Ω
Stereo ,R
L
=4Ω, Po=250mW
BTL,R
L
=8Ω, Po=250mW
Rg=0, G
V
=45dB,
Vr=150mV, f=100Hz
G
V
=45dB,
BPF=20Hz
½20kHz
Rg=0
Rg=10kΩ
40
1.7
0.7
Stereo
Bridge
43
49
TEST CONDITIONS
NIN
3
40
4.5
45
51
30
2.3
1.3
1
0.6
0.1
4.7
2.8
0.3
0.5
46
1.5
3
55
3
6
47
53
±1
TYP
MAX
12
50
UNIT
V
mA
V
dB
dB
kΩ
W
W
W
W
W
W
W
%
%
dB
μV
μV
dB
Po
(THD
=10%)
1.5
40
Rg=10kΩ, f=1kHz,
R
L
=4Ω, Po=1W
WuXi YouDa Electronics Co., Ltd
2 of 4
Website: www.e-youda.com
YOUDA INTEGRATED CIRCUIT
APPLICATION CIRCUIT
（1）YD2025
TYPE APPLICATION
+
100μ
+
8
16
14
YD2025
Vcc
470μ 0.1μ
+
100μ
+
470μ
0.15μ
3
IN 1
+
10
+
15
2.2μ
11
100μ
IN 2
+
+
_
RL
+
7
+
2
100μ
+
470μ
RL
2.2μ
6
100μ
+
4
5
9
12
13
_
1
0.15μ
(2) YD2025 BTL APPLICATION
Vcc
+
100μ
IN
8
16
14
10
+
470μ
+
100μ
15
+
2.2μ
+
100μ
+
_
11
0.15μ
3
7
+
+
2
100μ
RL
+
100μ
6
1
4
_
0.15μ
5
9
12
13
WuXi YouDa Electronics Co., Ltd
3 of 4
Website: www.e-youda.com
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