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PDF BD3843FS Data sheet ( Hoja de datos )
| Número de pieza | BD3843FS | |
| Descripción | 6ch / 9ch Stereo Input Selectors | |
| Fabricantes | ROHM Semiconductor | |
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Sound Processors for Home Theater Systems
6ch / 9ch Stereo
Input Selectors
BD3843FS,BD3841FS
No.10081EAT07
●Description
BD3843FS is a function switch IC with two 6ch (9ch for BD3841FS) inputs. It can independently control outputs of 2 systems:
2ch REC output (3ch for BD3841FS) and 1ch line output. Therefore, it is can be used for 2nd room entertainment and 2nd
source recording. BD3843FS has excellent cross-talk characteristics between channels and selectors. Low distortion, and
low noise are realized by a basic pattern layout.
●Features
1) 2 room entertainment / 2 source recording.
2) 6ch volume LSI BD3813KS/BD3815KS can be controlled simultaneously by the serial control bus.
3) 7ch volume LSI BD3816K1, BD3817KS with BD3843FS can be controlled simultaneously by the serial control bus.
4) 14ch input is available by combining 2chips (BD3843FS and BD3841FS).
5) Excellent cross-talk characteristics between channels by basic pattern layout.
6) Built-in buffer amplifier.
7) 2-line serial control bus (for both 3.3V and 5V).
8) Operated by single and dual power sources.
●Applications
AV receivers, home theater systems, mini-audio systems, and TVs.
●Product lineup
Parameter
BD3843FS
BD3841FS
Input selector
6
9
REC output
23
Package
SSOP-A24
SSOP-A32
●Absolute maximum ratings (Ta=25℃)
Parameter
Symbol
Ratings
Unit
Power Supply Voltage
VCC
VEE
7.5 *1
-7.5
V
Input signal voltage
Power Dissipation
Operating temperature
VIN VCC+0.3～VEE-0.3 V
Pd
800 (BD3843FS)
950 (BD3841FS)
*2 mW
Topr －20～+75 ℃
Storage temperature
Tastg
－55～+125
℃
*1 Even in the specified range of Power Supply Voltage, applying voltage only to the VCC side may cause
an excessive current may cause permanent damage to the IC.
When starting up power supplies, VEE and VCC should be powered on simultaneously, or VEE first followed by VCC.
*2 Reduced by 8 mW/℃ over 25℃ (BD3843FS), when installed on the standard board (size: 70 x 70 x 1.6mm).
Reduced by 7.7 mW/℃ over 25℃ (BD3841FS), when installed on the standard board (size: 70 x 70 x 1.6mm).
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
1/9
2010.06 - Rev.A
1 page  
BD3843FS,BD3841FS
●Block diagram, application circuit
1)BD3843FS)
(both power sources)
24 23 22 21 20 19 18 17 16 15 14 13
LOGIC
Technical Note
1 2 3 4 5 6 7 8 9 10 11 12
2)BD3841FS
(both power sources)
Fig.2
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
LOGIC
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
Fig.3
5/9
UNIT
RESISTANCE：Ω
CAPACITOR：F
* F-SW1：INPUT
F-SW2：INPUT
FUNCTION1
FUNCTION2
2010.06 - Rev.A
5 Page 
Datasheet
Precautions Regarding Application Examples and External Circuits
1. If change is made to the constant of an external circuit, please allow a sufficient margin considering variations of the
characteristics of the Products and external components, including transient characteristics, as well as static
characteristics.
2. You agree that application notes, reference designs, and associated data and information contained in this document
are presented only as guidance for Products use. Therefore, in case you use such information, you are solely
responsible for it and you must exercise your own independent verification and judgment in the use of such information
contained in this document. ROHM shall not be in any way responsible or liable for any damages, expenses or losses
incurred by you or third parties arising from the use of such information.
Precaution for Electrostatic
This Product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. Please take proper
caution in your manufacturing process and storage so that voltage exceeding the Products maximum rating will not be
applied to Products. Please take special care under dry condition (e.g. Grounding of human body / equipment / solder iron,
isolation from charged objects, setting of Ionizer, friction prevention and temperature / humidity control).
Precaution for Storage / Transportation
1. Product performance and soldered connections may deteriorate if the Products are stored in the places where:
[a] the Products are exposed to sea winds or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2
[b] the temperature or humidity exceeds those recommended by ROHM
[c] the Products are exposed to direct sunshine or condensation
[d] the Products are exposed to high Electrostatic
2. Even under ROHM recommended storage condition, solderability of products out of recommended storage time period
may be degraded. It is strongly recommended to confirm solderability before using Products of which storage time is
exceeding the recommended storage time period.
3. Store / transport cartons in the correct direction, which is indicated on a carton with a symbol. Otherwise bent leads
may occur due to excessive stress applied when dropping of a carton.
4. Use Products within the specified time after opening a humidity barrier bag. Baking is required before using Products of
which storage time is exceeding the recommended storage time period.
Precaution for Product Label
QR code printed on ROHM Products label is for ROHM’s internal use only.
Precaution for Disposition
When disposing Products please dispose them properly using an authorized industry waste company.
Precaution for Foreign Exchange and Foreign Trade act
Since our Products might fall under controlled goods prescribed by the applicable foreign exchange and foreign trade act,
please consult with ROHM representative in case of export.
Precaution Regarding Intellectual Property Rights
1. All information and data including but not limited to application example contained in this document is for reference
only. ROHM does not warrant that foregoing information or data will not infringe any intellectual property rights or any
other rights of any third party regarding such information or data. ROHM shall not be in any way responsible or liable
for infringement of any intellectual property rights or other damages arising from use of such information or data.:
2. No license, expressly or implied, is granted hereby under any intellectual property rights or other rights of ROHM or any
third parties with respect to the information contained in this document.
Other Precaution
1. This document may not be reprinted or reproduced, in whole or in part, without prior written consent of ROHM.
2. The Products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written
consent of ROHM.
3. In no event shall you use in any way whatsoever the Products and the related technical information contained in the
Products or this document for any military purposes, including but not limited to, the development of mass-destruction
weapons.
4. The proper names of companies or products described in this document are trademarks or registered trademarks of
ROHM, its affiliated companies or third parties.
Notice - GE
© 2014 ROHM Co., Ltd. All rights reserved.
Rev.002
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet BD3843FS.PDF ] | |
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