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PDF BD34705KS2 Data sheet ( Hoja de datos )
| Número de pieza | BD34705KS2 | |
| Descripción | 7.1ch Sound Processor | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Datasheet
Sound Processors for AV Receiver Systems
7.1ch Sound Processor
with Built-in Micro-step Volume
BD34705KS2
General description
The BD34705KS2 is an 8ch independent volume system.
The system is designed to allow 7.1ch surround system
application. It is improvement that sound quality more
than the conventional products. Micro-step volume can
reduce the switching pop noise during volume attenuation,
so a high quality audio system could be achieved.
8ch triple input selectors for zone 3 and multi channel
input enable the connection with a number of sources.
Features
8ch input selectors
(It is extendable to up to 14 by other functions and
exclusion)
Micro-step volume can reduce the switching pop
noise during volume attenuation.
Zone 3 is supported.
Built-in 2ch Volume for ZONE output
2-wire serial bus control, corresponding to 3.3/5V.
Key Specifications
Total harmonic distortion:
Maximum output voltage:
Output noise voltage:
Residual output noise voltage:
Cross-talk between channels:
Cross-talk between selectors:
0.0004%(Typ.)
4.2Vrms(Typ.)
1.2μVrms(Typ.)
1.0μVrms(Typ.)
-105dB(Typ.)
-105dB(Typ.)
Package
SQFP-T64
W(Typ.) x D(Typ.) x H(Max.)
14.00mm x 14.00mm x 1.50mm
Applications
Suitable for the AV receiver, home theater system,
etc.
SQFP-T64
Typical Application Circuit
Figure 1. Application Circuit
○Product structure：Silicon monolithic integrated circuit
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
○This product is not designed protection against radioactive rays
1/36
TSZ02201-0C2C0E100250-1-2
2015.3.31. Rev.001
1 page  
BD34705KS2
Datasheet
Absolute Maximum Ratings
Item
Symbol
Rating
Unit
Positive power supply
Negative power supply
Power dissipation
VCC
VEE
Pd
+7.75 (Note1)
-7.75 (Note1)
1.50 (Note2)
V
V
W
Input voltage
Operating temperature
Vin
Topr
VEE-0.2 to VCC+0.2
-40 to +85 (Note3)
V
°C
Storage temperature
Tstg -55 to +150
°C
(Note1)
The maximum voltage that can be applied based on GND.
(Note2)
Derating at 12.0mW/°C for operating above Ta≥25°C (mounted on 70×70×1.6mm ROHM standard board)
(Note3)
If it is within the operation voltage range, circuit functions operation is guaranteed within operation temp.
Caution: Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between
pins or an open circuit between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as
adding a fuse, in case the IC is operated over the absolute maximum ratings.
Operating Condition
Item
Symbol
Rating
Unit
Positive power supply
VCC
+6.5 to +7.5 (Note4,5)
V
Negative power supply
VEE
-6.5 to -7.5 (Note4,5)
V
(Note4)
(Note5)
Applying voltage based on GND.
Within the operating temperature range, basic circuit function and operation are guaranteed within this operation
voltage range. But please confirm the setting of the constants, temperature, etc. Please take note that
electrical characteristics other than defined values cannot be guaranteed, however original function will retain.
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/36
TSZ02201-0C2C0E100250-1-2
2015.3.31. Rev.001
5 Page 
BD34705KS2
Datasheet
Select Address No.0 Setting Table
Function & Setting D15 D14 D13 D12 D11 D10
MUTE
000000
IN1 0 0 0 0 0 1
IN2 0 0 0 0 1 0
D9
D8
IN3 0 0 0 0 1 1
IN4 0 0 0 1 0 0
IN5 0 0 0 1 0 1
IN6 0 0 0 1 1 0
IN7 0 0 0 1 1 1
IN8
IN9
IN10
IN11
001000
0
0
1
0
0
1
Rec
on/off
001010
001011
IN12
001100
IN13(REC) 0 0 1 1 0 1
IN14(SUB) 0 0 1 1 1 0
0
010000
Prohibition
111111
OFF
0
D7 D6 D5 D4 D3 D2 D1 D0
Sub
on/off
0
1
0
0
Chip
Select
0
0
ON
OFF
ON
Input Selector (MAIN)
1
Rec
on/off
0
1
: Initial condition
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/36
TSZ02201-0C2C0E100250-1-2
2015.3.31. Rev.001
11 Page | ||
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| PDF Descargar | [ Datasheet BD34705KS2.PDF ] | |
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