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Número de pieza | BD37034FV-M | |
Descripción | General-Purpose Electronic Volume | |
Fabricantes | ROHM Semiconductor | |
Logotipo | ||
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No Preview Available ! Datasheet
Sound Processors for Car Audios
General-Purpose Electronic
Volume with Built-in Advanced Switch
BD37034FV-M
General Description
BD37034FV-M is sound processors for car audio. The
functions are stereo 5 input selector, volume, 3-band
equalizer, loudness, 6ch fader, mixing, HPF for front and
rear, LPF for subwoofer, anti-aliasing-filter, Hi-Voltage
output, output level detector. Moreover, “Advanced
switch circuit”, that is ROHM original technology, can
reduce various switching noise (ex. No-signal, low
frequency likes 20Hz & large signal inputs). “Advanced
switch” makes control of microcomputer easier, and can
construct high quality car audio system.
Features
Reduce switching noise of volume, mute, fader
volume, mixing volume, bass, middle, treble,
loudness by using advanced switch circuit
[Possible to control all steps].
Built-in input selector (single 3 / diff 2).
Decrease the number of external components by
built-in 3-band equalizer filter, LPF for subwoofer,
loudness filter. And, possible to control Q, Gv, fo
of 3-band equalizer and fc of LPF, Gv, fo of
loudness by I2C BUS control freely.
Built-in mixing volume, Hi-Voltage output.
Built-in anti-aliasing-filter, anti-GSM-noise-filter.
Package is SSOP-B28. Putting input-terminals
together and output-terminals together can make
PCB layout easier and can makes area of PCB
smaller.
It is possible to control by 3.3V / 5V for I2C BUS.
AEC-Q100 Qualified.
Applications
It is the optimal for the car audio. Besides, it is
possible to use for the audio equipment of mini
Compo, micro Compo, TV etc with all kinds.
Key Specifications
Total harmonic distortion:
Maximum input voltage:
Cross-talk between selectors:
Ripple rejection
Output noise voltage:
Residual output noise voltage:
Operating Range of Temperature:
0.004%(Typ.)
2.1Vrms(Typ.)
100dB(Typ.)
-65dB(Typ.)
6µVrms(Typ.)
4µVrms(Typ.)
-40℃ to +85℃
package(s)
SSOP-B28
W(Typ.) x D(Typ.) x H(Max.)
10.00mm x 7.60mm x 1.35mm
SSOP-B28
Typical Application Circuit
Figure 1. Application Circuit Diagram
○Product structure:Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
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1 page BD37034FV-M
Item
Maximum input gain
Minimum input gain
Gain set error
Maximum boost gain
Maximum attenuation *
Gain set error
Attenuation set error
Mute attenuation *
Maximum boost gain
Maximum cut gain
Gain set error
Maximum boost gain
Maximum cut gain
Gain set error
Maximum boost gain
Maximum cut gain
Gain set error
Maximum gain
Gain set error
Datasheet
Limit
Symbol Min. Typ. Max.
Gv MAX
+14 +16 +18
Gv MIN
-2
0
+2
GV ERR1
-2
0
+2
Gv MAX
+13 +15 +17
Gv MIN
-83 -79 -75
GV ERR1
-2
0
+2
GV ERR2
-2
0
+2
GMUTE
- -100 -85
Unit Condition
Input Gain +16dB
dB VIN=100mVrms
Gin=20log(VOUT/VIN)
Input Gain 0dB
dB VIN=1Vrms
Gin=20log(VOUT/VIN)
dB GAIN=+16to+1dB
Volume +15dB
dB VIN=100mVrms
Gin=20log(VOUT/VIN)
Volume -79dB
dB VIN=2Vrms
Gin=20log(VOUT/VIN)
dB GAIN=+15to+1dB
dB ATT=0dBto-79dB
Mute ON
dB Gmute=20log(VOUT/VIN)
BW = IHF-A
GB BST
+13 +15 +17
GB CUT -17 -15 -13
GB ERR
-2
0
+2
GM BST +13 +15 +17
GM CUT -17 -15 -13
GM ERR
-2
0
+2
GT BST
+13 +15 +17
GT CUT -17 -15 -13
GT ERR
-2
0
+2
GL MAX -17 -15 -13
GL ERR
-2
0
+2
Gain=+15dB f=100Hz
dB VIN=100mVrms
GB=20log (VOUT/VIN)
Gain=-15dB f=100Hz
dB VIN=2Vrms
GB=20log (VOUT/VIN)
dB Gain=+15to-15dB f=100Hz
Gain=+15dB f=1kHz
dB VIN=100mVrms
GM=20log (VOUT/VIN)
Gain=-15dB f=1kHz
dB VIN=2Vrms
GM=20log (VOUT/VIN)
dB Gain=+15to-15dB f=1kHz
Gain=+15dB f=10kHz
dB VIN=100mVrms
GT=20log (VOUT/VIN)
Gain=-15dB f=10kHz
dB VIN=2Vrms
GT=20log (VOUT/VIN)
dB Gain=+15to-15dB f=10kHz
Gain -15dB f=800Hz
dB VIN=1Vrms
GL=20log(VOUT/VIN)
dB Gain=-15 to-1dB
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
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5 Page BD37034FV-M
Datasheet
(2)I2C BUS FORMAT
MSB
LSB
S Slave Address
1bit 8bit
S
Slave Address
A
Select Address
Data
P
MSB
LSB MSB
LSB
A Select Address A
Data
AP
1bit 8bit 1bit 8bit 1bit 1bit
= Start conditions (Recognition of start bit)
= Recognition of slave address. 7 bits in upper order are voluntary.
The least significant bit is “L” due to writing.
= ACKNOWLEDGE bit (Recognition of acknowledgement)
= Select every of volume, bass and treble.
= Data on every volume and tone.
= Stop condition (Recognition of stop bit)
(3)I2C BUS Interface Protocol
1)Basic form
S Slave Address A
Select Address
A Data A
MSB
LSB MSB
LSB MSB LSB
P
2)Automatic increment(Select Address increases (+1) according to the number of data)
S Slave Address A Select Address A Data1 A Data2 A ・・・・
MSB
LSB MSB
LSB MSB LSB
MSB LSB
(Example)①Data 1 is set as data of Select Address (20h).
②Data 2 is set as data of Select Address +1 (28h).
③Data N is set as data of Select Address +N-1.
DataN A P
MSB LSB
3)Configuration unavailable for transmission (In this case, only Select Address 1 is set.)
S Slave Address A Select Address1 A Data A Select Address 2 A Data A
MSB
LSB MSB
LSB MSB LSB MSB
LSB MSB LSB
(Note)If any data is transmitted as Select Address 2 next to data,
It is recognized as data, not as Select Address 2.
P
(4)Slave Address
MSB
LSB
A6 A5 A4 A3 A2 A1 A0 R/W
1 0 0 0 0 0 0 0 80H
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/44
TSZ02201-0C2C0E100010-1-2
4.OCT.2013 Rev.002
11 Page |
Páginas | Total 30 Páginas | |
PDF Descargar | [ Datasheet BD37034FV-M.PDF ] |
Número de pieza | Descripción | Fabricantes |
BD37034FV-M | General-Purpose Electronic Volume | ROHM Semiconductor |
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