BD37531FV-E2 ROHM [Rohm], BD37531FV-E2 Datasheet - Page 28

• Manufacturer Part Number: BD37531FV-E2
• Description: Sound Processors with Built-in 3-band Equalizer
• Manufacturer: ROHM [Rohm]

●Application circuit
© 2010 ROHM Co., Ltd. All rights reserved.
BD37531FV,BD37532FV,BD37533FV,BD37534FV
www.rohm.com
Notes on wiring
② Lines of GND shall be one-point connected.
③ Wiring pattern of Digital shall be away from that of analog unit and cross-talk shall not be acceptable.
④ Lines of SCL and SDA of I
⑥ About TEST pin(14,16,17pin), please use with OPEN.
① Please connect the decoupling capacitor of a power supply in the shortest distance as much as possible to GND.
⑤ Lines of analog input shall not be parallel if possible. The lines shall be shielded, if they are adjacent
The lines shall be shielded, if they are adjacent to each other.
to each other.
※Single1～3はGND Isolation2,3に切換可能
（About single input 1～3, it is possible to change from
single input to GND Isolation input 2,3.）
※About single input 1～3, it is possible to change
from single input to GND Isolation input 2,3.
■Fader
■Loudness
■3 Band P-EQ (Tone control)
■Volume
■Input Gain
★no pop noise
★no pop noise
★no pop noise
VCC/2
Gain:0dB～-79ｄB/1dB step
★no pop noise
Gain:20dB～0ｄB/1ｄB step
★no pop noise
Gain：+20dB～-20dB/1dB step
Gain：+15dB～-79dB/1dB step
Gain：+20dB～0dB/1dB step
・ｆ0=250/400/800Hz
・Hicut1/2/3/4
・Bass：f0=60/80/100/120Hz
・Meddle:f0=500/1k/1.5k/2.5kHz
・Treble：f0=7.5k/10k/12.5k/15kHz
FIL
28
Q=0.75/1/1.25/1.5
1
Q=0.5/1.0/1.5/2.0
Q=0.75/1.25
2.2μ
Single1
10μ
100k
GND Isolation2
GND
GND
27
2
100k
2.2μ
I
2
C BUS LOGIC
SDA
26
3
2
C BUS shall not be parallel if possible.
Single2
2.2μ
100k
SCL
25
4
Input selector (3 single-end and 2 stereo ISO)
2.2μ
100k
GND Isolation3
10μ
VCC
VCC
24
5
2.2μ
Single3
100k
0.1μ
OUTF1 OUTF2 OUTR1 OUTR2 OUTS1 OUTS2
23
6
10μ
2.2μ
Fig.28 BD37531FV
100k
★3 Band P-EQ
★Volume/Mute
(Tone control)
★Input Gain
※About GND Isolation1 and Full Differential, it is possible
★Loudness
ISO amp
22
7
to change from differential input to single input 4～6.
GND
28/37
※GND Isolation1, Full DifferentialはSingle4～6に切換可能
（About GND Isolation1 and Full Differential, it is possible
to change from differential input to single input 4～6.）
2.2μ
10μ
250k
GND Isolation1 or
Single4
21
8
10μ
250k
10μ
ISO amp
GND
20
9
2.2μ
10μ
250k
19
10
ISO amp
10μ
250k
2.2μ
GND
Full Differential or
Single5, Single6
18
11
10μ
250k
10μ
TEST3
17
12
ISO amp
250k
10μ
GND
TEST2
16
13
2.2μ
250k
MUTE
15
14
TEST1
Technical Note
2010.03 - Rev.A
R : [Ω]
C : [F]
Unit