Datasheet
Analog Sound Processors series
Sound Processor for car audio
built-in 2nd order post filter
BD37067FV-M
General Description
Key Specifications
It is built-in input selector of 6 stereo source and output
to ADC after adjusting signal level. And built-in 2nd 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.
TotalHarmonic Distortion:
Maximum Input Voltage:
0.003%(Typ)
2.2VRMS(Typ)
55dB(Min)
2.1VRMS(Typ)
8μVRMS(Typ)
2.5μVRMS(Typ)
-70dB (Typ)
Common Mode Rejection Ratio:
Maximum Output Voltage:
Output Noise Voltage:
Residual Output Noise Voltage:
Ripple Rejection:
Features
AEC-Q100 (Grade3) Qualified
Built-in differential input selector that can select
single-ended / differential input
Operating Temperature Range:
-40 ˚C to +85˚C
Reduce the pop noise when switching gain due to
built-in advanced switch circuit
Package
SSOP-B40
W(Typ) x D(Typ) x H(Max)
13.60mm x 7.80mm x 2.00mm
Less out-of-band noise of DAC by built-in 2nd 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.
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
INC
INS
IG1
IG2
10µF 10µF
OUTC OUTS OUTR1 OUTR2 OUTF1 OUTF2 INF2 INF1 INR2
INR1
GND
24
SDA
23
SCL
10µF 10µF
10µF
10µF
10µF
10µF
10µF 10µF
2.2µF 2.2µF 2.2µF 2.2µF 2.2µF 2.2µF
10µF
27
VREF
VCC2
VCC1
26
40
39
38
37
35
34
33
32
31
30
29
28
22
21
25
36
VREF
100kΩ
100kΩ
100kΩ
100kΩ
100kΩ
100kΩ
I2C-bus LOGIC
Front Mixing
Sub
Selector
★
★
■Fader : +23dB to -79dB、-∞/1dBstep
■Input Gain : +23dB to -15dB/1dBstep
■Front Mixing : on/off
Sub
Gain Adjust
Main Gain Adjust
Fader
Fader
Fader
Fader
Fader
Fader
ATT★
ATT★
ATT★
ATT★
ATT★
ATT★
★ Advanced Switch
2nd order LPF
Fader
Fader
Fader
Fader
Fader
Fader
Boost★
Boost★
Boost★
Boost★
Boost★
Boost★
■2nd order LPF: fc=70kHz
■Main/Sub Gain Adjust 0dB/6dB
■Anti-TDMA noise circuit
Rear
Selector
Front
Selector
★ Input Gain
Input selector (2 single
GND
-
end and
GND
4
stereo ISO)
GND
Differential
amp
Differential
amp
GND
ISO
GND
ISO
GND
ISO
amp
amp
amp
amp
amp
ISO
amp
ISO
ISO
100kΩ
250kΩ
250kΩ 250kΩ
250kΩ
250kΩ 250kΩ 250kΩ
250kΩ
250kΩ
250kΩ
250kΩ
250kΩ
250kΩ
100kΩ
100kΩ
250kΩ 250kΩ
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
MIN
A1
A2
B1
B2
CP1
CN
CP2
DP1 DN
DP2
EP1
EN
EP2
FP1
FN1
FN2
FP2
Figure 1. Typical Application Circuit
○Product structure:Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays.
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TSZ02201-0C2C0E100140-1-2
14.NOV.2016 Rev.002
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