BD34701KS2 Datasheet, PDF (1/32 Pages) Rohm – 7.1ch Sound Processor with Built-in Micro-step Volume

Datasheet
Sound Processors for Home Theater Systems
7.1ch Sound Processor
with Built-in Micro-step Volume
BD34701KS2
General description
The BD34701KS2 is an 8ch independent volume system.
The system is designed in such a way, that it can be
used as a 7.1ch surround system. Micro-step volume
can reduce the switching shock noise when volume
changes, so it can achieve a high-quality set.
8ch dual input selector for zone 2 and multi channel
input enable the connection of a number of sources.
Features
„ 8ch input selectors
„ Micro-step volume can reduce the switching shock
noise when volume changes.
„ Zone 2 can support.
„ 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.)
1.5uVrms(Typ.)
1.0uVrms(Typ.)
-105dB(Typ.)
-105dB(Typ.)
Package
SQFP-T52
W(Typ.) x D(Typ.) x H(Max.)
12.00mm x 12.00mm x 1.50mm
Applications
„ Most suitable for the AV receiver, home theater
system
Typical Application Circuit
GND INR1
INL1
INR2
INL2
INR3 INL3
INR4
INL4
INR5 INL5
INR6
INL6
39
38
37
36
35
34
33
32
31
30
29
28
27
GSM GSM GSM GSM GSM GSM GSM GSM GSM GSM GSM GSM
STEREO MULTI
INPUT INPUT
INL12
SBLIN 40
INR12 SBRIN 41
INL11
SLIN
42
INR11
SRIN
43
INL10
CIN
44
INR10
SWIN 45
INL9
FLIN
46
INR9
FRIN
47
GND
48
ADCR
49
ADCL
50
GND
51
CHP
52
Main
Sub
Mode
selector
Mode
selector
Mode
selector
Mode
selector
ADC
FR
FL
Volume Volume
SW
C
Volume Volume
SR
SL
Volume Volume
SBR
Volume
SBL
Volume
SQFP-T52
26
GND
25 INR7
24 INL7
23 INR8
22 INL8
21
GND
20
GND
Rec
19
RECR
18
RECL
17
GND
16
GND
15
SUBR
14
SUBL
Logic
1
2
3
4
5
6
7
8
9
10
11
12
13
DGND
47 µ 0.1µ
VCC
DA
CL
47µ
0.1 µOUTFR ^{OUTFL OUTSW OUTC OUTSR OUTSL OUTSBR OUTSBL}
VEE
Figure 1. Application Circuit
○Product structure：Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
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TSZ02201-0C2C0E100080-1-2
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