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ROHM Semiconductor |
Datasheet
Sound Processors for Home Theater Systems
7.1ch Sound Processor for High-Quality Audio
with Built-in Micro-step Volume
BD34704KS2
General description
The BD34704KS2 is an 8ch independent volume system
realized high-quality sound by improved specification of
op-amp and optimized layout of the element.The system
is designed to allow 7.1ch surround system application.
Micro-step volume can reduce the switching pop noise
during volume attenuation, so a high quality audio
system could be achieved.
This IC is available 12ch single-end input selectors to
maximum 3 zones. And also available 2 system multi
input selector.
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-T80C
W(Typ) x D(Typ) x H(Max)
16.00mm x 16.00mm x 1.60mm
Features
12ch input selectors
(It is extendable to up to 18 in case of no use other
functions such as Multi input, REC output and SUB
output)
Micro-step volume can reduce the switching pop
noise during volume attenuation
Zone 3 is supported
2ch sub-volume for zone output that is available for
independent control with a micro step function
2-wire serial bus control, corresponding to 3.3/5V
SQFP-T80C
Applications
Suitable for the AV receivers, home theater systems,
etc
Typical Application Circuit
Figure 1. Application Circuit
○Product structure:Silicon monolithic integrated circuit
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product is not designed protection against radioactive rays
1/36
TSZ02201-0C2C0E100210-1-2
2015.2.25 Rev.002
BD34704KS2
Pin Configuration
Datasheet
Figure 2. Pin Configuration
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
2/36
TSZ02201-0C2C0E100210-1-2
2015.2.25 Rev.002
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