BD3702FV 반도체 회로 부품 판매점
Silicon Monolithic Integrated Circuit
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 ROHM Semiconductor |
PRODUCTS
TYPE
SEMICONDUCTOR IC
ＢＤ３７０２ＦＶ
PAGE
1／4
Structure
Product
Type
Package
:
:
:
:
Silicon Monolithic Integrated Circuit
Sound Processor for car audio
BD3702FV
SSOP-B28
●Feature
1. Reduce switching noise of input gain control, mute, main volume, fader volume, bass, middle, treble, loudness,
mixing by using advanced switch circuit [Possible to control all steps]
2. Built-in ground isolation amplifier inputs, ideal for external stereo input.
3. Built-in differential input selector that can make various combination of single-ended / differential input.
4. Built-in input gain controller reduce switching noise for volume of a portable audio input.
5. 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, fo, Gv of loudness by I2C BUS control freely.
6. It is possible for the bass, middle, treble to the gain adjustment quantity of ±20dB and 1 dB step gain adjustment.
7. It is equipped with output terminals of Subwoofer. Moreover, the stereo signal of the front and rear also can be
output by the I2C BUS control.
8. Built-in mixing input and mixing attenuation.
9. Bi-CMOS process is suitable for the design of low current and low energy. And it provides more quality for
small-scale regulator and heat in a set.
10. Package is SSOP-B28. Putting input-terminals together and output-terminals together can make
PCB layout easier and can makes area of PCB smaller.
11. It is possible to control by 3.3V / 5V for I2C BUS.
●Absolute Maximum Ratings (Ta=25℃)
Parameter
Symbol
Limits
Unit
Power supply Voltage
Input voltage
Power Dissipation
Storage Temperature
VCC
VIN
Pd
Tastg
10.0
VCC+0.3～GND-0.3
1063 ※1
-55～+150
V
V
mW
℃
※1 At Ta＝25°C or higher, this value is decreaced to 8.5mW/°C
When Rohm standard board is mounted.
Rohm standard board:
Size：70×70×1.6(mm3)
material：FR4 glass-epoxy substrate (copper foil area: not more than 3%).
●Operating Range
Parameter
Symbol
Power supply Voltage
VCC
Temperature
Topr
※Design against radiation-proof isn’t made.
Min. Typ. Max.
7.0 － 9.5
-40 － +85
Unit
V
℃
Status of this document
The Japanese version of this document is the formal specification. A customer may use this translation only for a reference to help
reading the formal version. If there are any differences in translation version of this document, formal version takes priority.
Application example
･ ROHM cannot provide adequate confirmation of patents.
･ The product described in this specification is designed to be used with ordinary electronic equipment or device (such as audio-visual equipment,
office-automation equipment, communications devices, electrical appliances, and electronic toys.)
Should you intend to use this product with equipment or devices which require an extremely high level of reliability and the malfunction of which
would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers,
fuel controllers and other safety device), please be sure to consult with our sales representative in advance.
･ ROHM assumes no responsibility for use of any circuits described herein, conveys no license under any patent or other right, and makes no
representations that the circuits are free from patent infringement.
DESIGN
CHECK
APPROVAL
DATE:
25/Nov/2008
SPECIFICATION No. TSZ02201-BD3702FV-1-2
TSZ22111･04
REV.
B
ＲＯＨＭ ＣＯ.,ＬＴＤ.
PRODUCTS
TYPE
SEMICONDUCTOR IC
ＢＤ３７０２ＦＶ
PAGE
2／4
●Function
Function
Input selector
Input gain
Mute
Volume
Bass
Middle
Treble
Fader
Loudness
LPF
Level meter
Mixing
Specifications
Stereo input Possible to set the number of single-end/diff/full-diff as follows
0～20dB (1dB step), Possible to use “Advanced switch” for prevention of switching noise
Possible to use “Advanced switch” for prevention of switching noise.
+15dB～-79dB (1dB step), -∞dB
Possible to use “Advanced switch” for prevention of switching noise.
-20～+20dB (1dB step), Q=0.5, 1, 1.5, 2, fo=60, 80, 100, 120Hz
Possible to use advanced switch at changing gain
-20～+20dB (1dB step), Q=0.75, 1, 1.25, 1.5
fo=500, 1k, 1.5k 2.5kHz , Possible to use advanced switch at changing gain
-20～+20dB (1dB step), Q=0.75, 1.25
fo=7.5k, 10k, 12.5k, 15kHz , Possible to use advanced switch at changing gain
+15dB～-79dB (1dB step), -∞dB
Possible to use “Advanced switch” for prevention of switching noise.
0dB～20dB (1dB step), fo=250/400/800Hz
Possible to use “Advanced switch” for prevention of switching noise.
fc=55/85/120Hz, pass.
I2C BUS control, DC Output
Monaural input , +7dB～-79dB（1dB step）, -∞
Possible to use “Advanced switch” for prevention of switching noise.
●Electrical Characteristic
(Unless specified particularly, Ta=25℃, VCC=8.5V, f=1kHz, Vin=1Vrms, Rg=600Ω, RL=10kΩ, A input,
Input gain 0dB, Mute off, Volume 0dB, Tone control 0dB, Loudness 0dB, LPF OFF, MIX OFF, Fader 0dB)
Item
Symbol
Limit
Unit
Condition
Min. Typ. Max.
Current upon no signal
IQ
－ 48 60
mA No signal
Voltage gain
GV -1.5 0 1.5
dB Gv=20log(VOUT/VIN)
Channel balance
Total harmonic distortion 1
(FRONT,REAR)
Total harmonic distortion 2
(SUBWOOFER)
Output noise voltage 1
(FRONT,REAR)
Output noise voltage 2
(SUBWOOFER)
Residual output noise voltage
Cross-talk between channels
Ripple rejection
Common mode rejection ratio
(D, E) ＊
Maximum input voltage
Maximum gain
Maximum attenuation
Maximum output voltage
CB
THD+N1
-1.5
－
THD+N2 －
VNO1
－
VNO2
－
VNOR
－
CTC
－
RR －
CMRR
50
VIM 2.0
GV MAX
13
GV MIN
VOM
－
2.0
0 1.5
0.001 0.05
0.002 0.05
3.8 15
4.8 15
1.8 10
-100 -90
-70 -40
65 －
2.2 －
15 17
-100
2.2
-85
－
dB
％
％
μVrms
μVrms
μVrms
dB
dB
dB
Vrms
dB
dB
Vrms
CB = GV1-GV2
VOUT=1Vrms
BW=400-30KHz
VOUT=1Vrms
BW=400-30KHz
Rg = 0Ω
BW = IHF-A
Rg = 0Ω
BW = IHF-A
Fader=-∞dB
Rg=0Ω
BW=IHF-A
Rg=0Ω
CTC=20log(VOUT/VIN)
BW=IHF-A
f=100Hz
VRR=100mVrms
RR=20log(VOUT/VCCIN)
XP1 and XN input
XP2 and XN input
CMRR=20log(VIN/VOUT)
BW = IHF-A,[※X・・・D,E]
VIM at THD+N(VOUT)=1%
BW=400-30kHz
Volume = 15dB
VIN=100mVrms
Gv=20log(VOUT/VIN)
Volume=-∞dB
Gf=20log(VOUT/VIN)
BW=IHF-A
THD+N=1%
BW=400-30kHz
ＲＯＨＭ ＣＯ.,ＬＴＤ. REV.：
TSZ22111･05
B
SPECIFICATION No.：
TSZ02201-BD3702FV-1-2
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