UTC8207 - Hangzhou Silan Microelectronics

UTC8207 Low Frequency Power Amplifier

YOUWANG ELECTRONICS CO.LTD 2 UTC8207 1. Adjustment of Voltage Gain LINEAR INTEGRATED CIRCUIT The voltage gain GV is obtained as follows by R1, R2 and Rf in fig.1. Rf + R1+ R2 GV = 20log Rf + R1 When Rf=0, GV=56.5dB (Typ.) When Rf=120Ω, GV=45dB (Typ.) By increasing Rf, reduction of GV is possible. However, since the feedback increase is liable to produce.

Features

­ C2 120 ¡ C5 8 45 ¡ 100 F w
*1 CIN w IN-2 Rf 2 7 NF 2 C9 CH-1 10 11 ­C7 1000 F 0.15 F 30K ¡ 9 GND B.S.2 ­ ­ OUT-2 RL .D at (
*1): This IC can be used without coupling capacitor (CIN). If volume slide noise occurred by input offset voltage is (
*2): The condenser between the aS undesirable, it needs to use the capacitor (CIN). ‹ pin and the GND (C11) is for reducing pop noise when the power ON / OFF 1 switch (SW1) is set to ON/OFF. hYOUWANG ee ELECTRONICS CO.LTD t4 U .c om www.DataSheet4U.com ­ ¡ 120 5 ¡ 2 C6 ­ 0.15­F OUT-1 RL 1000 F + - UTC8207 Chara.