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PDF BD3452KS Data sheet ( Hoja de datos )
| Número de pieza | BD3452KS | |
| Descripción | 7.1ch Sound Processor | |
| Fabricantes | ROHM Semiconductor | |
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Sound Processors for Home Theater System
7.1ch
Sound Processor
BD3452KS
No.10081EAT01
●Description
BD3452KS is a sound processor where the functions including Input Selector, 8ch Volume and Gain Amp required for
applications such as AV receivers, home theater systems and mini-component systems are integrated into a single chip.
Adopting the BiCMOS process achieves low distortion, low noise and a wide dynamic range.
●Features
1) Dynamic range: 132dB (VOL=MUTE, IHF-A)
2) Independent 8 channels for Master Volume (0 to -99 dB, MUTE 1dB/Step)
3) Supporting 2nd room entertainment
4) Low current consumption design achieved by adopting the BiCMOS process
5) Built-in Output Gain Amp useful for adjusting output signal voltages (0 to 15dB, 1dB/Step)
6) BD3841FS (9-input selector), BD3843FS (6-input selector) and BUS are common to be controlled simultaneously.
7) Built-in 2ch output port
8) 2-wire serial control (For both 3.3V and 5V)
●Applications
AV receivers, home theater systems and mini-component systems
●Absolute maximum ratings (Ta=25℃)
Parameter
Symbol
Power Supply Voltage
VCC
VEE
Input Signal Voltage
VIN
Ratings
7.5 *1
-7.5
VCC+0.3 to VEE-0.3
Unit
V
V
Power Dissipation
Pd
1300 *2
mW
Operating Temperature Range Topr
-20 to 75
℃
Storage Temperature Range
Tastg
-55 to 125
℃
*1 Even in the specified range of Power Supply Voltage, applying voltage only to the VCC side may cause an
excessive current to give a permanent damage to the IC.
When starting up power supplies, VEE and VCC should be powered on simultaneously or VEE first; then followed by VCC.
*2 Over Ta25℃, reduce at the rate of 13mW/℃. When installed on the standard board (size: 70701.6mm).
●Operating conditions
It must function normally at Ta25℃.
Parameter
Symbol
Operating Supply Voltage
VCC
VEE
Ratings
Min. Typ. Max.
6.5 7 7.3
-7.3 -7 -6.5
Unit
V
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
1/9
2010.06 - Rev.A
1 page  
BD3452KS
●Application circuit
Technical Note
FL
FR
C
SL
SR
SBL
SBR
SW
FL
FR
C
SL
SR
SBL
SBR
SW
BOUT1
BOUT2
L
R
L
R
L
R
L
R
L
10µ 10µ 10µ 10µ
100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81
1
47K
2
47K
3
47K
4
47K
5
47K
6
47K
7
47K
8
47K
9
80
10µ
79
78
77
10µ
76
75
74
10µ
73
72
10
47K
11
47K
12
47K
13
47K
1
4 47K
15
47K
16
47K
17
47K
18
19
20
21
22
47K
23
47K
24
47K
25
47K
26
47K
27
47K
28
47K
29
47K
30
47K
71
10µ
70
69
VEE
VCC
68 VEE
47µ
67
47µ
66 VCC
65
64
logic
63 10K
62 10K
61
PORTB
PORTA
60 DA
59 CL
58
DGN
D
57
56
47K
SW
55
47K
SBR
54
47K
SBL
53
47K
SR
52
47K
SL
REC 51 C
47K
47K 47K 47K 47K 47K 47K 47K 47K 47K
47K 47K
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
8ch Input (DSP)
9ch Input Selector
Fig.2
UNIT
RESISTOR : Ω
CAPACITOR : F
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
5/9
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 | ||
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