Conpact Headphone Amplifiers
Standard Headphone Amplifiers
BH3544F,BH3547F,BH3548F
No.11102EBT02
●Description BH3544F, BH3547F, BH3548F are headphone amplifiers suitable for portable products. BH3544F, BH3547F, BH3548F has a fixed gain of 6 dB. External resistors for gain setting are not needed. Package of BH3544F, BH3547F, BH3548F is pin-to-pin compatible (SOP8), enable to replace each other easily. 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.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) 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
BH3544F +2.8 ~ +6.5 7.0
BH3547F +4.5 ~ +5.5 3.7 6 77 16 / 32 -25 ~ +75
BH3548F +4.0 ~ +5.5 6.5 62 8/16/32 -40 ~ +85
Unit V mA dB mW Ω ℃
62
Symbol VCC Pd Tstg
Ratings BH3544F,BH3547F,BH3548F 7.0 550
*1
Unit V mW °C
-55~+125
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 Limits 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.
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1/8
2011.04 - Rev.B
BH3544F,BH3547F,BH3548F
Technical Note
●Electrical characteristics (Unless otherwise noted, Ta=25°C,VCC=5V,RL=32Ω,f=1kHz,BW=400~30kHz, VIN =-6dBV) Limits(TYP.) Parameter Symbol Unit Conditions 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 ΔGVC THD PO1 0.02 31 7 3.7 1.6<
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