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PDF BH3541F Data sheet ( Hoja de datos )
| Número de pieza | BH3541F | |
| Descripción | Standard Headphone Amplifiers | |
| Fabricantes | ROHM Semiconductor | |
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Headphone Amplifiers
Standard
Headphone Amplifiers
BH3541F,BH3544F,BH3547F,BH3548F
No.10102EAT02
●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
BH3541F
BH3544F
+2.8 ～ +6.5
7.0
0
62
16 / 32
-25 ～ +75
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
℃
●Absolute maximum ratings(Ta=25°C)
Parameter
Symbol
Ratings
BH3541F,BH3544F,BH3547F,BH3548F
Applied voltage
VCC
7.0
Power dissipation
Pd
550 *1
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)
Parameter
Symbol
BH3541F,BH3544F
Limits
BH3547F
Supply voltage
VCC
+2.8 ～ +6.5
+4.5 ～ +6.5
Temperature Range
Topr
-25～+75
* These product are not designed for protection against radioactive rays.
BH3548F
+4.0 ～ +5.5
-40 ～ +85
Unit
V
mW
°C
Unit
V
℃
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
1/8
2010.05 - Rev.A
1 page  
BH3541F,BH3544F,BH3547F,BH3548F
●Terminal Equivalent Circuit / Description
Pin
No.
Pin
Name
I /O
Equivalent circuit
Pin voltage
BH3544F,BH3547F,BH3548F
BH3547F
1
7
OUT1
OUT2
O
2.1V
(VCC=5V)
1
7
VCC
10k
VCC
1
7 10k
Technical Note
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Function
Output pin
2 MUTE
I
0.1V
(When open)
2
VCC
190k
VCC
2
200k
Mute control pin
Mute on:Hi
Mute off:Lo (open)
VCC
3 IN1
5 IN2
I
2.1V
(VCC=5V)
3
5
180k
BIAS
VCC
3
5 90k
BIAS
Input pin
6
BIAS
I/O
2.1V
(VCC=5V)
6
VCC
60k
BIAS
60k
6
VCC Bias pin
(Since the 47 µF
externally attached
70k capacitor also serves
BIAS as the time constant for
64k pop noise
countermeasures,
evaluate adequately
when changing it.)
4 GND I
-
-
- GND pin
8 VCC I
-
-
-
※The figure in the pin explanation and input/output equivalent circuit is reference value, it doesn’t guarantee the value.
Power supply pin
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
5/8
2010.05 - Rev.A
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet BH3541F.PDF ] | |
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