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