Headphone Amplifiers
Standard
Headphone Amplifiers
No.10102EAT02
BH3541F,BH3544F,BH3547F,BH3548F
●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
BH3541F
BH3544F
BH3547F
BH3548F
Unit
+2.8 ~ +6.5
+4.5 ~ +5.5
+4.0 ~ +5.5
V
mA
dB
mW
Ω
Quiescent current
Amplifier gain
7.0
62
3.7
6
6.5
0
Output [RL=16Ω]
77
62
load impedance
16 / 32
8/16/32
Operating temperature range
-25 ~ +75
-40 ~ +85
℃
●Absolute maximum ratings(Ta=25°C)
Ratings
Parameter
Symbol
Unit
BH3541F,BH3544F,BH3547F,BH3548F
Applied voltage
VCC
Pd
7.0
550 *1
V
Power dissipation
mW
°C
Storage temperature
Tstg
-55~+125
*1 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)
Limits
Parameter
Symbol
Unit
BH3541F,BH3544F
BH3547F
BH3548F
+4.0 ~ +5.5
-40 ~ +85
Supply voltage
Temperature Range
VCC
Topr
+2.8 ~ +6.5
+4.5 ~ +6.5
V
-25~+75
℃
* These product are not designed for protection against radioactive rays.
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2010.05 - Rev.A
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