Low Frequency Power Amplifier
Description
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Silicore U 4 LOW FREQUENCY POWER AMPLIFIER D8227 t e e h GENERAL DESCRIPTION Outline Drawing S a an audio power IC wit h built-in D8227 t is a two Channels developed for portable radio D .
cassette tape recorder with power ON/OFF w switch.
Th ermal shut do wn protection
circuit is built in .
Because of the parts reduction and DIP (Dual in line package), space merit is re markable.
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c
FEATURES
z High Power Pout=2.
5W/CH(Typ.
) Pout=3.
0W/CH(Typ.
) z Voltage Gain :
:(Vcc=9V,R L =4 Ω ,f=1kHz,THD=10%) :(Vcc=9V,R L =3 Ω ,f=1kHz,THD=10%) Rf=120¦¸ ,f=1kHz£©
Gv=45dB(Typ.
)£¨
Gv=56.
5dB(Typ .
)£¨ z z z z z Low popping noise at power ON
Small Quiescent Current : I C C Q =21 mA(Typ.
)
Ripple Rejection Ratio : R.
R.
=-52dB(Typ.
)(Vc c=9V£¬ Cross Talk : C .
T .
= -50dB(Typ.
)(V cc=9V£¬ Output Noise Voltage : f=1kHz£¬
BW=20Hz~20kHz) z z z z z Stand-By Switch Soft Clip
Built-in ther mal shut down protection circuit Best fo r sup p ly vo ltage 9 V Operation supply voltage rang e : Vcc=5~12 V
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t a .
D
S a
Rf=0 ¦¸
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U 4 t e
Rg=600¦¸
.
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,f=1kHz
(Vcc=9V Vin=0) fripple=100Hz£¬ ) Rg=10k ¦ ¸ £ ¬ Rg=600¦¸ )
Vno=0.
3mVrms (Typ .
)(Vcc=9V £¬
SHAOXING SILICORE TECHNOLOGY CO.
,LTD www.
Silicore.
com.
cn
CHMC
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Silicore
MAXIMUM RATINGS (Ta=25 ° C)
CHARACT ERISTIC Supply Output Vo ltage Current (Peak/CH) SYMBOL Vcc IQ(peak) PD Topr Tstg RATING 20 2.
5 4.
0 -25~75 -55~150
D8227
UNIT V A W °C °C
Power Diss ipation* Operating Te mperature Storage Temp erature
* Value for mounting on PC board(Refer to P D -Ta curve)
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified , Vcc=9V,f=1kHz, Rg=600 Ω , R L =4 Ω ,Ta=25 °C) CHARACT ERISTIC Quiescent Current Output Power To tal Harmonic Distortion Voltage Gain Input Resistance Output Noise Vo ltage Ripple Rejection Ratio Cross Talk Input Offset Voltage Stand-By Cu rrent SYMBOL ICCQ POUT(1) POUT(2) THD GV(1) GV(2) RIN VNO R.
R C.
T V6,V7 Istb TEST CON DITI ON V I N =0 THD=10% THD=10%...
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