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PDF BD37524FS Data sheet ( Hoja de datos )
| Número de pieza | BD37524FS | |
| Descripción | Sound Processor | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Datasheet
Sound Processor with Built-in 3-band Equalizer
BD37524FS
General Description
BD37524FS is a sound processor with built-in 3-band
equalizer for car audio. Other features are stereo 5ch
input selector, input-gain control, main volume,
loudness, 5ch fader volume, LPF for subwoofer, level
meter. It is equipped with an “Advanced switch circuit”,
which is an original ROHM technology that reduces
various switching noise (ex. No-signal, low frequency
likes 20Hz & large signal inputs). The “Advanced
switch” makes control of microcomputer easier and can
be used for designing high quality car audio systems.
Features
Reduced switching noise of input gain control,
mute, main volume, fader volume, bass, treble,
and loudness by using advanced switch circuit
Built-in differential input selector and 4
single-ended input selectors
Built-in ground isolation amplifier inputs, which is
ideal for external stereo input.
Built-in input gain controller reduces switching
noise for volume of a portable audio input.
Lesser number of external components due to
built-in 3-band equalizer filter, LPF for subwoofer,
loudness filter. This makes,it possible to control
the Q, Gv, fo of 3-band equalizer, fc of LPF, fo, and
Gv of loudness through I2C BUS.
A gain adjustment quantity of ±20dB with 1 dB
step gain adjustment is possible for bass, middle,
and treble.
Built-in subwoofer output terminals.
Energy-saving design resulting in low current
consumption is achieved by utilizing the Bi-CMOS
process. It has the advantage in quality over
scaling down the power heat control of the internal
regulators.
Input pins and output pins are organized and
separately laid out to keep the signal flow in one
direction which consequently, simplify pattern
layout of the set board and decrease the board
dimensions. .
It is possible to be controlled by a 3.3V / 5V I2C
BUS
Key Specifications
Power Supply Voltage Range:
Circuit Current (No Signal):
Total Harmonic Distortion1
(FRONT,REAR):
Total Harmonic Distortion2
(SUBWOOFER):
Maximum Input Voltage:
Cross-talk Between Selectors:
Volume Control Range:
Output Noise Voltage1
(FRONT,REAR):
Output Noise Voltage2
(SUBWOOFER):
Residual Output Noise Voltage:
Operating Temperature Range:
7.0V to 9.5V
38mA(Typ)
0.001%(Typ)
0.002%(Typ)
2.3Vrms(Typ)
-100dB(Typ)
+15dB to -79dB
3.8µVrms(Typ)
4.8µVrms(Typ)
1.8µVrms(Typ)
-40°C to +85°C
Package
W(Typ) x D(Typ) x H(Max)
SSOP-A24
10.00mm x 7.80mm x 2.10mm
Applications
It is optimal for car audio systems. It is also suitable for
other audio equipment such as mini Compo, micro
Compo, TV etc
○Product structure：Silicon monolithic integrated circuit
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product has no designed protection against radioactive rays
1/31
TSZ02201-0C2C0E100490-1-2
16.Dec.2015 Rev.001
1 page  
BD37524FS
Electrical Characteristics - continued
Parameter
Limit
Symbol
Min Typ Max
Unit
Conditions
Mute Attenuation *
Maximum Gain
Maximum Attenuation *
Attenuation Set Error 1
Attenuation Set Error 2
Attenuation Set Error 3
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 Boost Gain
Maximum Attenuation＊
Gain Set Error
Attenuation Set Error 1
Attenuation Set Error 2
Attenuation Set Error 3
Output Impedance
Maximum Output Voltage
Maximum Gain
Gain Set Error
GMUTE
－ -105 -85
GV_MAX
13
15
17
GV_MIN － -100 -85
GV_ERR1
-2
0
+2
GV_ERR2
-3
0
+3
GV_ERR3
-4
0
+4
GB_BST
18
20
22
GB_CUT
-22
-20
-18
GB_ERR
-2
0
+2
GM_BST
18
20
22
GM_CUT
-22
-20
-18
GM_ERR
-2
0
+2
GT_BST
18
20
22
GT_CUT
-22
-20
-18
GT_ERR
-2
0
+2
GF_BST
13
15
17
GF_MIN － -100 -90
GF_ERR
-2
0
+2
GF_ERR1
-2
0
+2
GF_ERR2
-3
0
+3
GF_ERR3
-4
0
+4
ROUT － － 50
VOM 2 2.2 －
GL_MAX
17
20
23
GL_ERR
-2
0
+2
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
Ω
Vrms
dB
dB
Mute ON
GMUTE=20log(VOUT/VIN)
BW = IHF-A
Volume = 15dB
VIN=100mVrms
GV=20log(VOUT/VIN)
Volume = -∞dB
GV=20log(VOUT/VIN)
BW = IHF-A
GAIN & ATT=+15dB to -15dB
ATT=-16dB to -47dB
ATT=-48dB to -79dB
Gain=+20dB f=100Hz
VIN=100mVrms
GB=20log (VOUT/VIN)
Gain=-20dB f=100Hz
VIN=2Vrms
GB=20log (VOUT/VIN)
Gain=+20dB to -20dB f=100Hz
gain=+20dB f=1KHz
VIN=100mVrms
GM=20log (VOUT/VIN)
Gain=-20dB f=1KHz
VIN=2Vrms
GM=20log (VOUT/VIN)
Gain=+20dB to -20dB f=1KHz
Gain=+20dB f=10kHz
VIN=100mVrms
GT=20log (VOUT/VIN)
Gain=-20dB f=10kHz
VIN=2Vrms
GT=20log (VOUT/VIN)
Gain=+20dB to -20dB f=10kHz
Fader=15dB
VIN=100mVrms
GF=20log(VOUT/VIN)
Fader = -∞dB
GF=20log(VOUT/VIN)
BW = IHF-A
Gain=+15dB to +1dB
ATT=-1dB to -15dB
ATT=-16dB to -47dB
ATT=-48dB to -79dB
VIN =100mVrms
THD+N=1%
BW=400Hz-30KHz
Gain 20dB
VIN=100mVrms
GL=20log(VOUT/VIN)
GAIN=+20dB to +1dB
Maximum Output Voltage
VL_MAX
2.8
3.1
3.5
V
Output Offset Voltage
VL_OFF
－
0 100
mV
VP-9690A(Average value detection, effective value display) filter by Matsushita Communication is used for * measurement.
Phase between input / output is same.
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/31
TSZ02201-0C2C0E100490-1-2
16.Dec.2015 Rev.001
5 Page 
BD37524FS
Typical Performance Curves – continued
3.5
3
2.5
2
1.5
1
0.5
0
0
0.5 1 1.5 2 2.5
Input Voltage : VIN [Vrms]
3
Figure 21. Output Voltage vs Level Meter VIN
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/31
TSZ02201-0C2C0E100490-1-2
16.Dec.2015 Rev.001
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet BD37524FS.PDF ] | |
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