Sanyo 1 682 351 01 Service Manual

3、 Headphone Amplifier BH3547F●DescriptionBH3547F is one headphone amplifier suitable for portable products.BH3547F has a fixed gain of 6 dB.External resistors for gain setting are not needed. Package of BH3541F, BH3544F, BH3547F, BH3548F is pin-to-pincompatible (SOP8), enable to replace each other easily.BH3547F also has mute functions that make it easy to prevent pop noise when power supply turns on/off. Moreover,thermal shutdown function is built-in.BH3547F can drive 16/32Ω load.receiver.●Features1) Built-in mute function for preventing pop noise when power supply turns on/off2) Built-in thermal shutdown function3) BH3541F, BH3544F, BH3547F, BH3548F are pin-to-pin compatible4) SOP8 small package●ApplicationsTV, Desktop PC, Notebook PC, Camcorder and other equipment having headphone output56783 4V CC O UT2 BIA S IN2180 k(90 k)180 k(9 0k)0 dB(6d B)0d B(6d B)B IASMUTETS D21OU T1 MUTE I N1 G ND●Block diagram