This part is a kind of semiconductor called 4558.

Function of this product has YD4558.

Manufacturers : Wuxi Youda Electronics

Image and pinout :

Some of the text within the PDF file :

YOUDA INTEGRATED CIRCUIT YD4558 DUAL OPERATIONAL AMPLIFIERYD4558 DESCRIPTION The YD4558 is a monolithic integrated circuit designed for dual operational amplifier. FEATURES *NO frequency compensation required *NO latch-up *Large common mode and differential voltage range *Parameter tracking cover temperature range *Gain and phase match between amplifiers *Internally frequency compensated *Low noise input transistors (Vin=2.5¦Ì V) BLOCK DIAGRAM 8 Vcc 7 6 + + 1 2 3 Vee 4 5 WuXi YouDa Electronics Co., Ltd Add: No.5 Xijin Road, National Hi-Tech Industrial Development Zone, Wuxi Jiangsu China Tel: 86-510-5205117 86-510-5205108 Fax: 86-510-5205110 Website: www.e-youda.com SHENZHEN OFFICE Tel£º 86-755-83740369 13823533350 Fax£º 86-755-83741418 Ver 3.1 1 of 3 200 [ ... ]

4558 PDF Datasheet Download