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Power AMP. CD2025B Datasheet

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Power AMP. CD2025B Datasheet
















CD2025B AMP. Datasheet pdf. Equivalent













Part

CD2025B

Description

2.3W Dual Audio Power AMP



Feature


Silicore 2.3W DUAL AUDION POWER AMP DESC RIPTION The CD2025B is a monolithic int egrated circuit consisting of a 2-chann el po wer amplifier. It is suitable for stereo and bridge amplifier applicatio n of radio cassette tape recorder. CD2 025B Outline Drawing FEATURES z High o u tput power Stereo: Po=2.3W (Typ) at V cc=9V, R L =4 Ω Bridge: Po=4.7W (Typ) at Vcc=9V, R L =8 Ω.
Manufacture

Shaoxing Silicore Technology

Datasheet
Download CD2025B Datasheet


Shaoxing Silicore Technology CD2025B

CD2025B; z z z z z z Low switching distortion at high frequency. Small shock noise at t h e time of power on/off due to a built -in mu ting circuit Good ripple rejecti on due to a built-in ripple filter. Goo d ch annel separation. Soft tone at the time of output saturation. Closed loop voltage gain fixed 45 d B (Bridge: 51d B) but availability with external resis tor added. z z Min.


Shaoxing Silicore Technology CD2025B

imu m nu mb er of external parts require d. Easy to design radiator fin. BLOCK DIAGRAM AND PIN CONNECTION PRE GND 7 IN 1 8 NF1 POWER GND 9 Fin INPUT AMP 1 + B S1 10 OUT1 11 Vcc 12 SHOCK NOISE REJEC TOR OUT AMP 1 RIPPLE FILTER INPUT AMP 2 + 6 R.R 5 IN2 OUT AMP 2 4 Fin 3 NF 2 POWER GND BS2 2 OUT2 1 BTL OUT SHA OXING SILICORE TECHNOLOGY CO.,LTD www. Silicore. com. cn .


Shaoxing Silicore Technology CD2025B

1/3 CHMC Silicore ABSOLUTE MAXIMUM RA TINGS (Ta=25 ° C) Characteristic Suppl y Vo ltage Power Diss ipation Operating Te mperature Storage Temp erature *Fin is soldering on the PCB Symbol Vcc PD Topr Tstg CD2025B Value 15 4* -20~70 -40~150 Unit V W °C °C ELECTRICAL C HARACTERISTICS (unless otherwise specif ied: Ta=2 5 ° C, Vcc=9V; Rg=6 00 Ω , f=1kHz) Characteristics .





Part

CD2025B

Description

2.3W Dual Audio Power AMP



Feature


Silicore 2.3W DUAL AUDION POWER AMP DESC RIPTION The CD2025B is a monolithic int egrated circuit consisting of a 2-chann el po wer amplifier. It is suitable for stereo and bridge amplifier applicatio n of radio cassette tape recorder. CD2 025B Outline Drawing FEATURES z High o u tput power Stereo: Po=2.3W (Typ) at V cc=9V, R L =4 Ω Bridge: Po=4.7W (Typ) at Vcc=9V, R L =8 Ω.
Manufacture

Shaoxing Silicore Technology

Datasheet
Download CD2025B Datasheet




 CD2025B
Silicore
2.3W DUAL AUDION POWER AMP CD2025B
DESCRIPTION
The CD2025B 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.
Outline Drawing
F E AT U R E S
z High output power
St ereo: Po=2 .3W (Typ) at Vcc=9V, RL=4
Bridge: Po=4.7W (Typ) at Vcc=9V, R L=8
z Low switching distortion at high frequency.
z Small shock noise at the time of power on/off due to a built-in muting circuit
z Good ripple rejection due to a built-in ripple filter.
z Good channel separation.
z Soft tone at the time of output saturation.
z Closed loop voltage gain fixed 45dB (Bridge: 51dB) but availability with external
resistor added.
z Minimum number of external parts required.
z Easy to design radiator fin.
BLOCK DIAGRAM AND PIN CONNECTION
PRE GND
7
IN1 NF1 POWER GND BS1 OUT1
89
Fin
10 11
Vcc
12
SHOCK NOISE
REJECTOR
-
INPUT
AMP 1
+
-
INPUT
AMP 2
+
OUT
AMP 1
RIPPLE FILTER
OUT
AMP 2
6
54
Fin
32
1
R.R IN2 NF2 POWER GND BS2 OUT2 BTL OUT
SHAOXING SILICORE TECHNOLOGY CO.,LTD
www. Silicore. com. cn
CHMC
1/3




 CD2025B
Silicore
CD2025B
ABSOLUTE MAXIMUM RATINGS (Ta=25°C)
Characteristic
Symbol
Supply Vo ltage
Vcc
Power Dissipation
PD
Operating Temperature
Topr
Storage Temperature
Tstg
*Fin is soldering on the PCB
Va l u e
15
4*
-20~70
-40~150
Unit
V
W
°C
°C
ELECTRICAL CHARACTERISTICS
(unless otherwise specified: Ta=25°C, Vcc=9V; Rg=600,f=1kHz)
Characteristics
Test conditions
Symbol Min. Typ. Max. Unit
Operating Supply Vo ltage
Vcc 9 11 V
Quiescent circuit current
Vi=0V, Stereo
ICCQ
40 55 mA
Stereo
Closed loop Vo ltage Gain
Bridge
Vi=-45dBm
43 45 47 dB
Gvc
49 51 53 dB
Channel Balance
Stereo
CB -1 0 +1 dB
Output Power
THD=10%, RL=4
Stereo
THD=10%, RL=8Po
1.7 2.3
1.3
W
Bridge THD=10%, RL=8
4.7
Total Harmonic
Distortion
Stereo
Bridge
Po=250mW
RL=4
THD
0.3 1.5
0.5
%
Input Resistance
Ripple Rejection Ratio
Output Noise Vo ltage
Stereo, Rg=0,
Vi=150mW f=100Hz
Stereo Rg=0
Stereo Rg=10k
Ri 21 30
k
RR 40 46
dB
VNO
0.3 1.0
mV
0.5 2.0
Cross Talk
Stereo Rg=10kVo =0d B m CT 40 55
dB
SHAOXING SILICORE TECHNOLOGY CO.,LTD
www. Silicore. com. cn
CHMC
2/3




 CD2025B
Silicore
CD2025B
BRIDGE AMPLIFIER TEST AND APPLICATION CIRCUIT
INPUT
100uF 100uF
7 8 9 Fin 10
CD2025B
6 5 4 Fin 3
11 12
21
100uF 100uF
Vcc
1000uF
RL
470uF
APPLICATION INFORMATION
1. Stereo application
(1) Fixed Vo ltag e gain
8+
(Pin 9 connected to GND directly )
9
Rf
R2
CH1
-
R1
11
Gv=20 log( R1/R2)
(2) Variable voltage gain
(Rf and C, Connected with pin 9)
C1 G v = 2 0 l o g ( R 1 / ( R 2 + R f)
2.Bridge application
INPUT
8
9
Rf
R2
C1
+
CH1
-
R1
5K
10K
11 C4
2
RL C6
+
CH2
-
R4
R3
5
4
C2
1
(1) Fixed voltage gain (pin 9 connected to GND directly)
Gv=20log (R1/R2)
(2)Variable voltage gain Rf and C1 connected with pin 9
Gv=20 log (R1/(R2+Rf))
SHAOXING SILICORE TECHNOLOGY CO.,LTD
www. Silicore. com. cn
CHMC
3/3




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