BH3541F_10 ROHM [Rohm], BH3541F_10 Datasheet

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BH3541F_10

Manufacturer Part Number
BH3541F_10
Description
Standard Headphone Amplifiers
Manufacturer
ROHM [Rohm]
Datasheet
1.BH3541F_10.pdf (9 pages)
Headphone Amplifiers
Standard
Headphone Amplifiers
●Description
●Features
●Applications
●Line up
●Absolute maximum ratings(Ta=25°C)
●Operating conditions (Ta=25°C)
© 2010 ROHM Co., Ltd. All rights reserved.
www.rohm.com
BH3541F,BH3544F,BH3547F,BH3548F
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.
TV, Desktop PC, Notebook PC, Camcorder and other equipment having headphone output
Supply voltage
Temperature Range
Supply voltage
Quiescent current
Amplifier gain
Output [R
load impedance
Operating temperature range
Applied voltage
Power dissipation
Storage temperature
*1 Derating is done at 5.5mW/°C above Ta=25°C. (When mounted on a 70mm×70mm×1.6mm PCB board, FR4)
* These product are not designed for protection against radioactive rays.
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
L
=16Ω]
Parameter
Parameter
Part No.
Symbol
Symbol
VCC
VCC
Topr
Tstg
Pd
BH3541F
0
BH3541F,BH3544F
+2.8 ～ +6.5
+2.8 ～ +6.5
7.0
62
1/8
-25 ～ +75
BH3544F
BH3541F,BH3544F,BH3547F,BH3548F
16 / 32
-25～+75
+4.5 ～ +6.5
-55～+125
BH3547F
Ratings
Limits
550
+4.5 ～ +5.5
7.0
BH3547F
*1
3.7
77
6
+4.0 ～ +5.5
-40 ～ +85
+4.0 ～ +5.5
BH3548F
-40 ～ +85
BH3548F
8/16/32
6.5
62
2010.05 - Rev.A
No.10102EAT02
Unit
Unit
mW
Unit
mW
mA
dB
°C
℃
℃
V
Ω
V
V

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BH3541F_10 Summary of contents

Page 1

Headphone Amplifiers Standard Headphone Amplifiers BH3541F,BH3544F,BH3547F,BH3548F ●Description BH3541F, BH3544F, BH3547F, BH3548F is headphone amplifiers suitable for portable products. BH3541F has a fixed gain and BH3544F, BH3547F, BH3548F has a fixed gain of 6 dB. External resistors for ...

Page 2

BH3541F,BH3544F,BH3547F,BH3548F ●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) Parameter Symbol Quiescent current I Q Mute pin control voltage H V TMH Mute pin control voltage L V TML Gain G VC Gain ...

Page 3

BH3541F,BH3544F,BH3547F,BH3548F ●Reference data (Continued) BH3541F/BH3544F Fig. 4 Voltage gain vs. frequency BH3541F/BH3544F Fig. 7 Total harmonic distortion vs. output voltage (3) BH3541F/BH3544F Fig. 10 MUTE attenuation vs. frequency www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. BH3541F/BH3544F 10 Ta25C ...

Page 4

BH3541F,BH3544F,BH3547F,BH3548F ●Block diagram OU T1 ●Measurement circuit SW7 SW8B SWBA SW1 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved ...

Page 5

BH3541F,BH3544F,BH3547F,BH3548F ●Terminal Equivalent Circuit / Description Pin Pin I /O Pin voltage No. Name 1 OUT1 2.1V O (VCC=5V) 7 OUT2 0.1V 2 MUTE I (When open) 3 IN1 2.1V I (VCC=5V) 5 IN2 2.1V 6 BIAS I/O (VCC=5V) 4 ...

Page 6

BH3541F,BH3544F,BH3547F,BH3548F ●Application circuit µ 10 VMUTE H : Active L : Mute ●Description of external components. 1) Input coupling capacitors (C3, C5) These are determined according to the lower cutoff frequency fc. Moreover, since lowering the ...

Page 7

BH3541F,BH3544F,BH3547F,BH3548F 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 ...

Page 8

BH3541F,BH3544F,BH3547F,BH3548F ●Ordering part number Part No. Part No. 3541 3544 3547 3548 SOP8 5.0±0.2 (MAX 5.35 include BURR) + 6° 4° −4° 0.595 0.17 S 0.1 S 1.27 ...

Page 9

No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose ...

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