This part is a kind of semiconductor called D8227.

Function of this product has Low Frequency Power Amplifier.

Manufacturers : Shaoxing Silicore Technology

Image and pinout :

Some of the text within the PDF file :

w w 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. m o .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£ [ ... ]

D8227 PDF Datasheet Download