This part is a kind of semiconductor called SJ2822M.

Function of this product has Dual Power Amplifier.

Manufacturers : San Jing

Image and pinout :

Some of the text within the PDF file :

SAN JING ELECTRONICS CO.,LTD DUAL POWER AMPLIFIER GENERAL DESCRIPTION SJ2822M SJ2822M The SJ2822M is a monolithic integrated circuit in 8 lead Minidip package. It is intended for use as dual audio power amplifier in portable cassette tape players and radios. l l l l l FEATURES Dual Low-voltage power amplifier Supply voltage down to 1.8V Low crossover distortion Low quiescent current Bridge or stereo configuration l BLOCK DIAGRAM NF1 8 IN1 7 IN2 6 NF2 5 _ + BIAS CIRCUIT + _ 1 OUT1 2 Vcc 3 OUT2 4 GND PINNING URL:http://www.szsanjing.com --------------- TEL: 0755-29663136 FAX: 0755-29663137 --------------page:1/6 SAN JING ELECTRONICS CO.,LTD MAXIMUM RATINGS Characteristics Supply Voltage Output Peak Current Total Power Dissipation(at Tamb=50° C) Tot [ ... ]

SJ2822M PDF Datasheet Download