BH3547F

Speaker / Headphone Amplifier Series Stereo Headphone Amplifiers BH3541F, BH3544F, BH3547F, BH3548F No.09077EAT01 ●Description BH3541F, BH3544F, BH3547F, BH3548F is headphone amplifiers suitable for portable products. BH3541F has a fixed gain of 0 dB and BH3544F, BH3547F, BH3548F has a fixed gain of 6 dB. External resistors for gain setting are not needed. Package of BH3541F, BH3544F, BH3547F, BH3548F is pin-to-pin compatible (SOP8), enable to replace each other easily. BH3541F, BH3544F, BH3547F, BH3548F 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. BH3541F, BH3544F, BH3547F can drive 16/32Ω load, BH3548F can drive 8/16/32Ω. So, BH3548F is suitable for 8Ω receiver. ●Features 1) Built-in mute function for preventing pop noise when power supply turns on/off 2) Built-in thermal shutdown function 3) BH3541F, BH3544F, BH3547F, BH3548F are pin-to-pin compatible 4) SOP8 small package ●Applications TV, Desktop PC, Notebook PC, Camcorder and other equipment having headphone output ●Line up Part No. Supply voltage Quiescent current Amplifier gain Output [RL=16Ω] load impedance Operating temperature range ●Absolute maximum ratings（Ta=25°C） Parameter Applied voltage Power dissipation Storage temperature *1 BH3541F 7.0 0 62 BH3544F BH3547F +4.5 ～ +5.5 3.7 6 77 BH3548F +4.0 ～ +5.5 6.5 62 8/16/32 -40 ～ +85 Unit V mA dB mW Ω ℃ +2.8 ～ +6.5 16 / 32 -25 ～ +75 Symbol VCC Pd Tstg Limit BH3541F,BH3544F,BH3547F,BH3548F 7.0 550 *1 -55～+125 Unit V mW °C Derating is done at 5.5mW/°C above Ta=25°C. (When mounted on a 70mm×70mm×1.6mm PCB board, FR4) ●Operating conditions (Ta=25°C) Parameter Supply voltage Temperature Range ＊ Symbol VCC Topr BH3541F,BH3544F +2.8 ～ +6.5 -25～+75 BH3547F +4.5 ～ +6.5 BH3548F +4.0 ～ +5.5 -40 ～ +85 Unit V ℃ These product are not designed for protection against radioactive rays. www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 1/8 2009.07 - Rev.A BH3541F, BH3544F, BH3547F, BH3548F Technical Note ●Electrical characteristics (Unless otherwise noted, Ta=25°C,VCC=5V,RL=32Ω,f=1kHz,BW=400～30kHz BH3541F : VIN=0dBV, BH3544F, BH3547F, BH3548F : VIN =-6dBV) TYP. Parameter Symbol Unit Conditions BH3541F BH3544F BH3547F BH3548F Quiescent current Mute pin control voltage H Mute pin control voltage L Gain Gain difference between channels Total harmonic distortion Rated output 1 IQ VTMH VTML GVC △GVC THD PO1 0.02 31 0 0 0.05 46 0.02 31 7 1.6<