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BH3541F 데이터시트 PDF




ROHM Semiconductor에서 제조한 전자 부품 BH3541F은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


PDF 형식의 BH3541F 자료 제공

부품번호 BH3541F 기능
기능 Headphone amplifier for CD-ROMs
제조업체 ROHM Semiconductor
로고 ROHM Semiconductor 로고


BH3541F 데이터시트 를 다운로드하여 반도체의 전기적 특성과 매개변수에 대해 알아보세요.




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BH3541F 데이터시트, 핀배열, 회로
www.DataSheet4U.com
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 16/32load, BH3548F can drive 8/16/32. So, BH3548F is suitable for 8
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=16]
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
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




BH3541F pdf, 반도체, 판매, 대치품
BH3541F,BH3544F,BH3547F,BH3548F
Block diagram
VCC
8
OUT2
7
BIA S
6
IN2
5
Technical Note
www.DataSheet4U.com
TSD
B IAS
0d B
(6d B)
MUTE
0 dB
(6d B)
180 k
(90 k)
180 k
(9 0k)
Measurement circuit
1
OU T1
2
MUTE
34
IN1 GND
( ) are BH3544F, BH3547F, BH3548F values.
Fig. 13
32 SW7
1
16
2
SW8B
A IQ
330μ
V V7AC
CVCC
10μ
VCC
8
OUT2
7
BIAS
6
47μ
R5
IN2
5
SW5
1
2
VIN2
1
VRR
2
SWBA
VCC
BIAS
0dB
(6dB)
180k
(90k)
TSD
0dB
(6dB)
180k
(90k)
MUTE
32 SW1
1
330μ
16
2 V1AC V
1
OUT1
2
MUTE
VTM
3
IN1
R3
4
GND
SW3
1
2
VIN1
Fig. 14
( ) are BH3544F, BH3547F, BH3548F values.
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
4/8
2010.05 - Rev.A

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BH3541F 전자부품, 판매, 대치품
BH3541F,BH3544F,BH3547F,BH3548F
Technical Note
www.DataSheet4U.com
4) GND potential
Make the GND pin voltage such that it is the lowest voltage even when operating below it. Actually confirm that the
voltage of each pin does not become a lower voltage than the GND pin, including transient phenomena.
5) Thermal design
Perform thermal design in which there are adequate margins by taking into account the allowable power dissipation in
actual states of use.
6) Shorts between pins and misinstallation
When mounting the LSI on a board, pay adequate attention to orientation and placement discrepancies of the LSI.
If it is misinstalled and the power is turned on, the LSI may be damaged. It also may be damaged if it is shorted by a
foreign substance coming between pins of the LSI or between a pin and a power supply or a pin and a GND.
7) Operation in strong magnetic fields
Adequately evaluate use in a strong magnetic field, since there is a possibility of malfunction.
8) Pop noise countermeasures
In order to prevent the pop noise that occurs when the power supply turns ON or OFF, make the rise and fall with
reference to the timing diagram shown below.
1)BH3541F/ BH3544F/ BH3548F
Rise time
A
PLAY period
Rise time
A
VCC
BC
OUT
MUTE
Fig. 16
(A):Mute period (Use as pop noise countermeasure when power supply turns ON/OFF by makingVMUTE=Lo.)
(B):Mute cancellation period (This has a time constant because it is used by the externally attached C2 and R2 as
a pop noise countermeasure on mute cancellation, so be careful of the timing.)
(C):Mute start time (As on cancellation, this has a time constant.)
2)BH3547F
(Rise time)
(PLAY period)
(MUTE period)
(Fall period)
VCC
(A)
Vmute
SG
(Input Signal)
(B)
OUT
Fig. 17
(A):Before VCC rise (or at the same time as VCC) make mute cancelled (VMUTE=Hi).
(B):Soft mute period (This time can be set by externally attached R2 and C2)
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
7/8
2010.05 - Rev.A

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관련 데이터시트

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Headphone amplifier for CD-ROMs

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