BD37067FV-M_16 Datasheet, PDF (1/38 Pages) Rohm – Sound Processor for car audio built-in 2nd order post filter

Datasheet
Analog Sound Processors series
Sound Processor for car audio
built-in 2^nd order post filter
BD37067FV-M
General Description
It is built-in input selector of 6 stereo source and output
to ADC after adjusting signal level. And built-in 2^nd order
post filter to reduce out of band noise and 6ch Volume
circuit. Moreover, it is simple to design set by built-in
TDMA noise reduction systems.
Features
 AEC-Q100 (Grade3) Qualified
 Built-in differential input selector that can select
single-ended / differential input
 Reduce the pop noise when switching gain due to
built-in advanced switch circuit
 Less out-of-band noise of DAC by built-in 2^nd order
post filter.
 Built-in buffered ground isolation amplifier to realize
high CMRR characteristics
 Built-in TDMA noise reduction circuit reduces the
additional components for external filter.
 Package is SSOP-B40. Putting same direction
input-terminals and output-terminals make PCB
layout easier and PCB area smaller.
 Available to control by 3.3V / 5V for I²C-bus
controller.
Key Specifications
 Total Harmonic Distortion：
0.003%(Typ)
 Maximum Input Voltage：
2.2VRMS(Typ)
 Common Mode Rejection Ratio：
55dB(Min)
 Maximum Output Voltage：
2.1VRMS(Typ)
 Output Noise Voltage：
8μVRMS(Typ)
 Residual Output Noise Voltage： 2.5μVRMS(Typ)
 Ripple Rejection:
-70dB (Typ)
 Operating Temperature Range: -40 ˚C to +85˚C
Package
SSOP-B40
W(Typ) x D(Typ) x H(Max)
13.60mm x 7.80mm x 2.00mm
Applications
It is the optimal for the car audio. Besides, it is
possible to use for the audio equipment of mini
Compo, micro Compo.
SSOP-B40
Typical Application Circuit
VCC
OUTC OUTS OUTR1 OUTR2 OUTF1 OUTF2 INF2 INF1 INR2 INR1 INS INC IG1 IG210µF 10µF
GND SDA SCL
10µF 10µF 10µF 10µF 10µF 10µF 2.2µF 2.2µF 2.2µF 2.2µF 2.2µF 2.2µF 10µF
10µF
10µF
VCC1 VREF
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
VCC2
21
Sub
Selector
100kΩ 100kΩ 100kΩ 100kΩ 100kΩ 100kΩ
Front Mixing
★
★
Fader
ATT★
Fader
ATT★
Fader
ATT★
Fader
ATT★
Fader
ATT★
Fader
ATT★
2nd order LPF
Fader
Boost★
Fader
Boost★
Fader
Boost★
Fader
Boost★
Fader
Boost★
Fader
Boost★
Rear
Selector
Front
Selector
Main Gain Adjust
Sub
Gain Adjust
VREF
I²C-bus LOGIC
■Fader : +23dB to -79dB、-∞/1dBstep
■Input Gain : +23dB to -15dB/1dBstep
■Front Mixing : on/off
★ Advanced Switch
■2nd order LPF: fc=70kHz
■Main/Sub Gain Adjust 0dB/6dB
■Anti-TDMA noise circuit
★ Input Gain
100kΩ
100kΩ
250kΩ
GND
ISO amp
Input selector (2 single - end and 4 stereo ISO)
GND
ISO amp
GND
ISO amp
GND
ISO amp
GND
ISO amp
GND
ISO amp
Differential
amp
Differential
amp
250kΩ 250kΩ 250kΩ 250kΩ 250kΩ 250kΩ 250kΩ 250kΩ 250kΩ 250kΩ 250kΩ 250kΩ 250kΩ 250kΩ 100kΩ
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
TEST1 TEST2
2.2µF 2.2µF 2.2µF 2.2µF 2.2µF 10µF 2.2µF 2.2µF 10µF 2.2µF 2.2µF 10µF 2.2µF 2.2µF 10µF 10µF 2.2µF 2.2µF
A1
A2
B1
B2 CP1 CN CP2 DP1 DN DP2 EP1 EN EP2 FP1 FN1 FN2 FP2 MIN
Figure 1. Typical Application Circuit
○Product structure：Silicon monolithic integrated circuit
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product is not designed protection against radioactive rays.
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TSZ02201-0C2C0E100140-1-2
14.NOV.2016 Rev.002