BD37503FV [ROHM]
内置4路输入选择器和2频段均衡器。此外，还是可切换使用以衰减响度与DAC输出中产生的多余噪声为目的的二次抗混叠滤波器（anti-aliasing filter）的声音处理器。;
| 型号： | BD37503FV |
| 厂家： | 
ROHM |
| 描述： | 内置4路输入选择器和2频段均衡器。此外，还是可切换使用以衰减响度与DAC输出中产生的多余噪声为目的的二次抗混叠滤波器（anti-aliasing filter）的声音处理器。 |
| 文件： | 总31页 (文件大小：1051K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Datasheet
Sound Processor Series for Car Audio
Sound processor with Built-in
2-band Equalizer
BD37503FV
●General Description
●Key Specifications
Sound processor which has built-in 4input selector and
2-band equalizer filter. And, loudness filter and 2nd-order
anti-aliasing filter which attenuate noise occurs at output
of DAC are available, either one by switching.
Total harmonic distortion：
Maximum input voltage：
Common mode rejection ratio：
Maximum output voltage：
Output noise voltage：
Residual output noise voltage： 2.8μVrms (Typ.)
Ripple rejection:
Operating temperature range
0.001%(Typ.)
2.2Vrms(Typ.)
50dB(Min.)
2.1Vrms(Typ.)
5.8μVrms(Typ.)
●Features
Built-in differential input selector that can make
various combination of single-ended / differential
input.
-70dB (Typ.)
-40℃to +85℃
Reduce switching noise by using advanced switch
circuit
Built-in ground isolation amplifier inputs, ideal for
external stereo input.
●Package
SSOP-B20
W(Typ.) x D(Typ.) x H(Max.)
6.50mm x 6.40mm x 1.45mm
Decrease the number of external components by
built-in 2nd-order anti-aliasing filter
Decrease the number of external components by
built-in 2-band equalizer filter and loudness filter.
A PCB area can be reduced and PCB layouts become
easy thanks to that signal flow is gathered to one
direction by arrangement of input and output left side
and right side separately.
It is possible to control by 3.3V / 5V for I2C BUS serial
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, TV etc with all kinds.
SSOP-B20
●Typical Application Circuit
lication Circuit Diagram
○Product structure：Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays
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SSOP-B20
(TOP VIEW)
● Pin Configuration
20 D2
1
2
3
4
5
6
7
8
9
D1
CN1
19
18
CN2
CP2
CP1
17 B2
16 A2
B1
A1
15
14
13
12
11
OUTF2
OUTF1
OUTR1
VCC
OUTR2
SCL
SDA
GND
VREF 10
Figure 2. Pin configuration
Terminal
●Pin Description
Terminal
No.
Symbol
Description of terminals
Symbol
Description of terminals
GND terminal
No.
1
N.C.
D1
Non connection terminal
D input terminal of 1ch
C negative input terminal of 1ch
C positive input terminal of 1ch
B input terminal of 1ch
A input terminal of 1ch
Front output terminal of 1ch
Rear output terminal of 1ch
Power supply terminal
11
GND
SDA
SCL
OUTR2
OUTF2
A2
2
3
12
13
14
15
16
17
18
19
20
I2C Communication data terminal
I2C Communication clock terminal
Rear output terminal of 2ch
Front output terminal of 2ch
A input terminal of 2ch
CN1
CP1
4
5
B1
6
A1
7
OUTF1
OUTR1
VCC
VREF
B2
B input terminal of 2ch
8
CP2
CN2
D2
C positive input terminal of 2ch
C negative input terminal of 2ch
D input terminal of 2ch
9
10
BIAS terminal
●Block Diagram
Figure 3. Block Diagram
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BD37503FV
●Absolute Maximum Ratings (Ta=25℃)
Item
Symbol
VCC
Rating
10.0
Unit
V
Power supply Voltage
VCC+0.3 to GND-0.3
SCL,SDA : 7 to GND-0.3
937 ※1
Input voltage
Vin
V
Power Dissipation
Storage Temperature
Pd
Tastg
mW
℃
-55 to +150
※1 This value decreases 7.5mW/℃for Ta=25℃or more.
ROHM standard board shall be mounted. Thermal resistance θja = 133.3(℃/W)
ROHM Standard board
size：70×70×1.6(㎣)
material：FR4 A FR4 grass epoxy board(3% or less of copper foil area)
●Recommended Operating Rating
Item
Symbol
VCC
Topr
MIN.
7.0
-40
TYP.
8.5
-
MAX.
9.5
+85
Unit
V
℃
Power supply Voltage
Temperature
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●Electrical Characteristic
Unless specified particularly, Ta=25℃, VCC=8.5V, f=1kHz, Vin=1Vrms, Rg=600Ω, RL=10kΩ, A input, Input gain 0dB,
Volume 0dB, Tone control 0dB, Loudness 0dB, Fader 0dB, Output Gain 0dB
Limit
Item
Symbol
Unit
mA
Condition
MIN.
TYP.
MAX.
27
Current upon no signal
IQ
－
20
No signal
Voltage gain
Channel balance
GV
CB
-1.5
-1.5
0
0
1.5
1.5
dB
dB
Gv=20log(VOUT/VIN)
CB = GV1-GV2
VOUT=1Vrms
BW=400-30KHz
Rg = 0Ω
Total harmonic distortion
THD+N1
VNO
－
0.001
5.8
0.05
18
%
Output noise voltage ＊
－
μVrms
BW = IHF-A
Fader = -∞dB
Residual output noise voltage ＊
Cross-talk between channels ＊
Ripple rejection
VNOR
CTC
RR
－
－
－
2.8
-100
-70
9
μVrms Rg = 0Ω
BW = IHF-A
Rg = 0Ω
-90
-40
dB
dB
CTC=20log(VOUT/VIN)
BW = IHF-A
f=1kHz
VRR=100mVrms
RR=20log(VCC IN/VOUT)
Input impedance(A, B, D)
Input impedance(CP,CN)
RIN_S
RIN_D
70
35
100
50
130
65
kΩ
kΩ
VIM at THD+N(VOUT)=1%
BW=400-30KHz
Maximum input voltage
VIM
2
2.2
－
Vrms
Rg = 0Ω
Cross-talk between selectors ＊
CTS
－
-100
-90
dB
CTS=20log(VOUT/VIN)
BW = IHF-A
CP1 and CN1 input
CP2 and CN2 input
CMRR=20log(VIN/VOUT)
BW = IHF-A,
Input gain 0dB
VIN=100mVrms
Common mode rejection ratio
Minimum input gain
CMRR
GIN MIN
50
-2
60
0
－
dB
dB
2
GIN=20log(VOUT/VIN)
Input gain 20dB
Maximum input gain
Gain set error
GIN MAX
GIN ERR
18
-2
20
0
22
2
dB
dB
VIN=100mVrms
GIN=20log(VOUT/VIN)
GAIN=+1 to +20dB
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Limit
TYP.
Item
Symbol
GV MAX
Unit
dB
Condition
MIN.
-1.5
MAX.
1.5
Volume = 0dB
VIN=100mVrms
Maximum gain
0
Gv=20log(VOUT/VIN)
Volume = -∞dB
Gv=20log(VOUT/VIN)
BW = IHF-A
ATT=0dB to -36dB
Gain=+20dB f=100Hz
VIN=100mVrms
Maximum attenuation ＊
GV MIN
－
-100
0
-85
2
dB
dB
Attenuation set error
GV ERR1
-2
Maximum boost gain
18
20
22
dB
GB BST
GB=20log (VOUT/VIN)
Gain=-20dB f=100Hz
VIN=2Vrms
GB=20log (VOUT/VIN)
Gain=+20 to -20dB f=100Hz
Gain=+20dB f=10kHz
VIN=100mVrms
Maximum cut gain
Gain set error
-22
-2
-20
0
-18
2
dB
dB
dB
GB CUT
GB ERR
GT BST
Maximum boost gain
18
20
22
GT=20log (VOUT/VIN)
Gain=-20dB f=10kHz
VIN=2Vrms
Maximum cut gain
-22
-20
-18
dB
GT CUT
GT=20log (VOUT/VIN)
Gain=+20 to -20dB f=10kHz
Gain=0dB
GF=20log(VOUT/VIN)
Fader = -∞dB
Gain set error
Maximum gain
GT ERR
GF BST
-2
-2
0
0
2
2
dB
dB
Maximum attenuation ＊
GF MIN
－
-100
-90
dB
GF=20log(VOUT/VIN)
BW = IHF-A
GF ERR1
GF ERR2
GF ERR3
RO FAD
-2
-3
-4
-
0
0
0
－
2
3
4
dB
dB
dB
Ω
ATT=-1 to -15dB
ATT=-16 to -47dB
ATT=-48 to -63dB
VIN=100mVrms
THD+N=1％
Attenuation set error 1
Attenuation set error 2
Attenuation set error 3
Output impedance
50
VOM F
2
2.1
－
Vrms
Maximum output voltage
BW=400-30KHz
Gain=15dB
Maximum gain
GLD MAX
13
15
17
dB
GLD=20log(VOUT/VIN)
BW=IHF-A
Gain=0dB to -15dB
GLD=20log(VOUT/VIN)
GLD ERR
-2
4
0
6
0
2
8
2
dB
dB
dB
Gain set error
Maximum gain
Gain set error
Gain +6dB
VIN=100mVrms
GOUT
MAX
G
OUT=20log(VOUT/VIN)
GOUT
ERR
-2
Gain=0dB, +6dB
※VP-9690A(Average value detection, effective value display) filter by Matsushita Communication is used for ＊ measurement.
※Phase between input / output is same.
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●Typical Performance Curve(reference data)
20
10
8
Operational Range
6
15
10
5
4
2
0
-2
-4
-6
-8
-10
0
9.5 10
7
10
100
1000
Frequency [Hz]
10000
100000
0
2
4
6
8
VCC [V]
Figure 4. Iq vs VCC
Figure 5. Gain vs Frequency
10
-20
-30
-40
-50
-60
-70
-80
10kHz
100Hz
1
0.1
1 kHz
0.01
0.001
10
100
1000
10000
100000
Frequency [Hz]
0.001
0.01
0.1
Vin [Vrms]
1
10
Figure 6. THD+n vs Input Voltage
Figure 7. CMRR vs Frequency
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-60
-70
-40
-50
-60
-70
-80
-90
-80
-90
-100
-110
-120
-100
10
10
100
1000
Frequency [Hz]
10000
100000
100
1000
Frequency [Hz]
10000
100000
Figure 9. Cross-talk between channels vs Frequency
Figure 8. PSRR vs Frequency
2
0
5
0
-2
-4
-6
-5
-8
-10
-12
-14
-16
-18
-10
-15
-20
-20
10
10
100
1000
Frequency [Hz]
10000
100000
100
1000
Frequency [Hz]
10000
100000
Figure 10. Loudness Gain vs Frequency
Figure 11. Antifilter Gain vs Frequency
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25
20
15
10
5
25
20
15
10
5
0
0
-5
-5
-10
-15
-20
-10
-15
-20
-25
-25
10
10
100
1000
Frequency [Hz]
10000
100000
100
1000
Frequency [Hz]
10000
100000
Figure 12. Bass Gain vs Frequency
Figure 13. Treble Gain vs Frequency
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●CONTROL SIGNAL SPECIFICATION
(1) Electrical specifications and timing for bus lines and I/O stages
SDA
tBUF
tHD;STA
tF
tSP
tR
tLOW
SCL
tSU;STO
tHD;STA
tSU;DAT tSU;STA
tHD;DAT
tHIGH
Sr
S
P
P
Figure 14. Definition of timing on the I2C-bus
Table 1 Characteristics of the SDA and SCL bus lines for I2C-bus devices
Parameter
Fast-mode I2C-bus
Symbol
Unit
MIN.
MAX.
400
kHz
1
2
SCL clock frequency
fSCL
tBUF
0
Bus free time between a STOP and START condition
1.3
－
－
μS
Hold time (repeated) START condition. After this period, the first clock
pulse is generated
3
tHD;STA
0.6
μS
4
5
6
LOW period of the SCL clock
tLOW
tHIGH
1.3
0.6
0.6
－
－
－
μS
μS
μS
HIGH period of the SCL clock
Set-up time for a repeated START condition
tSU;STA
7
8
9
Data hold time
tHD;DAT
tSU; DAT
tSU;STO
0
－
－
－
μS
ns
Data set-up time
100
0.6
Set-up time for STOP condition
μS
All values referred to VIH min. and VIL max. Levels (see Table 2).
About 7(tHD;DAT), 8(tSU;DAT), please make setup which has enough margin.
Table 2 Characteristics of the SDA and SCL I/O stages for I2C-bus devices
Fast-mode I2C-bus
Unit
Item
Symbol
MIN.
-0.5
2.3
MAX.
10 LOW level input voltage: In case an input level is fixed
11 HIGH level input voltage: In case an input level is fixed
VIL
1
-
V
V
VIH
12 Pulse width of spikes which must be suppressed by the input filter.
tSP
VOL1
Ii
0
0
50
0.4
10
ns
V
LOW level output voltage(open drain or open collector):
at 3mA sink current
13
Input current each I/O pin with an input voltage between 0.4V and
0.9V.
14
-10
μA
ｔHD;STA
：2us
ｔHD;DAT
：1us
ｔSU;DAT
：1us
ｔSU;STO
：2us
SCL
SDA
ｔBUF
：4us
ｔLOW
：3us
ｔHIGH
：1us
SCL clock frequency：250kHz
Figure 15. A command timing example in the I2C data transmission
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(2) I2C BUS FORMAT
MSB
Slave Address
8bit
LSB
MSB
Select Address
8bit
LSB
MSB
LSB
S
1bit
A
1bit
A
1bit
Data
8bit
A
P
1bit 1bit
S
= Start conditions (Recognition of start bit)
Slave Address = Recognition of slave address. 7 bits in upper order are voluntary.
The least significant bit is “L” due to writing.
A
= ACKNOWLEDGE bit (Recognition of acknowledgement)
Select Address = Select every of volume, bass and treble.
Data
P
= Data on every volume and tone.
= Stop condition (Recognition of stop bit)
(3) I2C BUS Interface Protocol
1) Basic form
S
Slave Address
MSB LSB
A
Select Address
MSB LSB
A
Data
MSB LSB
A
P
2) Automatic increment (Select Address increases (+1) according to the number of data.)
S
Slave Address
MSB LSB
(Example)① Data1 shall be set as data of address specified by Select Address.
A
Select Address
A
Data1
A
Data2
A
････
DataN
MSB
A
P
MSB LSB
MSB
LSB MSB
LSB
LSB
② Data2 shall be set as data of address specified by Select Address +1.
③ DataN shall be set as data of address specified by Select Address +N-1.
3) Configuration unavailable for transmission (In this case, only Select Address1 is set.
S
Slave Address
MSB LSB
A
Select Address1
MSB LSB MSB LSB MSB
A
Data
A
Select Address 2
A
Data
A P
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.
(4) Slave address
MSB
A6
LSB
R/W
A5
0
A4
0
A3
0
A2
0
A1
0
A0
0
80H
1
0
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(5) Select Address & Data
Select
Address
(hex)
MSB
D7
Data
LSB
D0
Items
D6
0
D5
1
D4
0
D3
0
D2
0
D1
0
1
0
Initial setup 1
Initial setup 2
01
03
Output
Gain
Loudness
select
Loudness
fo
0
0
0
0
0
0
Input selector
Input gain
05
06
20
28
29
2A
2B
51
0
0
0
0
0
0
0
Input selector
Input Gain
Volume gain
Volume Attenuation
Fader Attenuation F1
Fader Attenuation F2
Fader Attenuation R1
Fader Attenuation R2
Fader 1ch Front
Fader 2ch Front
Fader 1ch Rear
Fader 2ch Rear
Bass gain
Bass
Boost/Cut
Treble
0
0
0
0
Bass Gain
Treble gain
57
Treble Gain
Boost/Cut
Loudness Gain
System Reset
75
0
1
0
0
0
0
0
Loudness Gain
0
FE
0
0
0
1
Advanced switch
Note
1. In function changing of the hatching part, it works Advanced switch.
2. Upon continuous data transfer, the Select Address is circulated by the automatic increment function, as shown
below.
→
01→03→05→06→20→28→29→2A→2B→51→57→75
3. For the function of input selector, input gain and output gain etc, it is not corresponded for advanced switch.
Therefore, please apply mute on the side of a set when changes these setting.
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Select address 03(hex)
MSB
D7
Output
Gain
Loudness fo
LSB
D0
0
fo
D6
0
D5
0
D4
D3
D2
0
D1
0
650 Hz
1.3k Hz
Loudness
select
0
1
MSB
D7
Output
Gain
Loudness select
LSB
D0
Loudness
fo
Mode
D6
0
D5
0
D4
D3
0
D2
0
D1
0
Loudness
Anti-aliasing filter
0
1
MSB
D7
0
Output Gain
LSB
D0
Loudness
fo
Gain
D6
0
D5
0
D4
D3
D2
0
D1
0
0dB
+6dB
Loudness
select
0
1
Select address 05(hex)
Mode
MSB
D7
Input Selector
LSB
D0
0
1
0
D6
0
D5
0
D4
D3
D2
0
0
0
0
D1
0
0
1
1
A single
B single
C single
D single
C diff
1
0
0
0
0
1
0
Input SHORT
1
0
1
0
1
1
Prohibition
1
1
0
1
1
1
Input SHORT： The input impedance of each input terminal is lowered from 100kΩ(TYP) to 1 kΩ(TYP).(For quick
charge of coupling capacitor)
: Initial condition
The list of terminals that is active when each mode of input selector is selected
Mode
A single
B single
C single
D single
C diff
1ch+Input Terminal 1ch-Input Terminal 2ch+Input Terminal 2ch-Input Terminal
6pin(A1)
5pin(B1)
4pin(CP1)
2pin(D1)
4pin(CP1)
-
16pin(A2)
17pin(B2)
18pin(CP2)
20pin(D2)
18pin(CP2)
-
-
-
-
-
-
-
3pin(CN1)
19pin(CN2)
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Select address 06 (hex)
MSB
D7
Input Gain
D4
LSB
D0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
：
1
Gain
D6
D5
D3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
：
1
D2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
：
1
D1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
：
1
0dB
1dB
2dB
3dB
4dB
5dB
6dB
7dB
8dB
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
：
1
9dB
10dB
11dB
12dB
13dB
14dB
15dB
16dB
17dB
18dB
19dB
20dB
0
0
0
Prohibition
Select address 20 (hex)
ATT
MSB
D7
0
Volume Attenuation
LSB
D0
0
D6
0
D5
0
D4
0
D3
0
D2
0
D1
0
0
：
0
：
0
：
0
：
0
：
0
：
0
：
1
：
Prohibition
0
1
1
1
1
1
1
1
0dB
-1dB
-2dB
：
1
1
1
：
0
0
0
：
0
0
0
：
0
0
0
：
0
0
0
：
0
0
0
：
0
0
1
：
0
1
0
：
-35dB
-36dB
1
1
0
0
1
1
0
0
0
0
0
1
1
0
1
0
1
0
1
0
0
1
0
1
Prohibition
：
1
：
1
：
1
：
1
：
1
：
1
：
1
：
0
-∞dB
1
1
1
1
1
1
1
1
: Initial condition
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TSZ02201-0V2V0E100000-1-2
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13/28
TSZ22111・15・001
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BD37503FV
Select address 28, 29, 2A, 2B (hex)
MSB
D7
0
Fader Attenuation
LSB
D0
0
ATT
D6
0
D5
0
D4
0
D3
0
D2
0
D1
0
0
：
0
：
0
：
0
：
0
：
0
：
0
：
1
：
Prohibition
0
1
1
1
1
1
1
1
0dB
-1dB
-2dB
：
1
1
1
：
0
0
0
：
0
0
0
：
0
0
0
：
0
0
0
：
0
0
0
：
0
0
1
：
0
1
0
：
-62dB
-63dB
1
1
0
0
1
1
1
1
1
1
1
1
1
1
0
1
1
1
0
0
0
0
0
0
Prohibition
：
1
：
1
：
1
：
1
：
1
：
1
：
1
：
0
-∞dB
1
1
1
1
1
1
1
1
Select address 51, 57 (hex)
Gain
MSB
D7
Bass/Treble Gain
LSB
D0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
：
1
D6
D5
D4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
：
1
D3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
：
1
D2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
：
1
D1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
：
1
0dB
1dB
2dB
3dB
4dB
5dB
6dB
7dB
8dB
9dB
10dB
11dB
12dB
13dB
14dB
15dB
16dB
17dB
18dB
19dB
20dB
Bass/
Treble
Boost
/cut
0
0
Prohibition
Select address 51, 57 (hex)
Mode
MSB
D7
0
Bass/Treble Boost/Cut
D4 D3
LSB
D0
D6
0
D5
0
D2
D1
Boost
Cut
Bass/Treble Gain
1
: Initial condition
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Select address 75 (hex)
MSB
D7
Loudness Gain
LSB
D0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
Gain
D6
D5
D4
D3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
D2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
D1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0dB
1dB
2dB
3dB
4dB
5dB
6dB
7dB
8dB
0
0
0
0
9dB
10dB
11dB
12dB
13dB
14dB
15dB
1
: Initial condition
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TSZ02201-0V2V0E100000-1-2
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15/28
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●Volume / Fader volume attenuation of the details
Volume attenuation is 0dB to -36dB/Fader volume is 0dB to -63dB
(dB)
(dB)
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
0
-1
-2
-3
-4
-5
-6
-7
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
-33
-34
-35
-36
-37
-38
-39
-40
-41
-42
-43
-44
-45
-46
-47
-48
-49
-50
-51
-52
-53
-54
-55
-56
-57
-58
-59
-60
-61
-62
-63
-∞
-
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
-
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
-
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
-
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
1
-
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
1
-
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
1
-
-8
-9
-10
-11
-12
-13
-14
-15
-16
-17
-18
-19
-20
-21
-22
-23
-24
-25
-26
-27
-28
-29
-30
-31
-32
1
0
-
-
：Initial condition
(6) About power on reset
At ON of supply voltage circuit made initialization inside IC is built-in. Please send data to all address as initial data at
supply voltage on. And please supply mute at set side until this initial data is sent.
Limit
Item
Symbol
Trise
Unit
Condition
Min.
20
Typ.
Max.
Rise time of VCC
VCC voltage of
release power on
reset
－
－
usec VCC rise time from 0V to 5V
V
Vpor
－
5.0
－
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TSZ02201-0V2V0E100000-1-2
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●About Advanced switching circuit
【1】About Advanced switch
1-1. Effect of Advanced switch
It is the ROHM original technology for prevention of switching noise. When gain switching such as volume and tone
control is done momentarily, a music signal isn't continuous, and unpleasant shock noise is made. Advanced switch
can reduce shock noise with the technology which signal wave shape is complemented so that a music signal may not
continue drastically.
select
slave
data
Gain is made to change right after the data transmission momentarily. At this time, a
change of DC voltage occurs only in the one for the difference of the amplitude
before and after the change.
I2C BUS
80 20 86
The technology of Advanced switching makes this DC voltage change slow.
A change of DC voltage
Wave of Advanced switching
Advanced switch starts switching after the control data from a microcomputer are received. It takes one fixed time,
and wave shape transits as the above figure. The data transmitted by a microcomputer are processed inside, and the
most suitable movement is done inside the IC so that switching shock noise may not be made.
But, it presumes by the transmitting timing when it doesn't become intended switching wave shape because it is the
function which needs time. The example in which there are relation with the switching time of the data transmitting
timing and the reality are shown in the following. It asks for design when it is confirmed well.
1-2. About a kind of transmission method
・A data setup except for the item for advanced switch
(p11/27 select address and the data format, the thing which isn't indicated by gray)
There is no regulation in transmission specially.
・The data setup of the item for advanced switch
（p11/27 select address and the data format,, the thing which is indicated by gray）
Though there is no regulation in data transmission, the switching order when data are transmitted to several blocks
follows the next 2.
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【2】About transmission DATA of advanced switching item
2-1. About switching time of advanced switch
Advanced switching time are equivalent to the switching time and invalid time(effect-less time) inside the IC, and
switching time and invalid time is equal to 11.2msec x (1±0.4(dispersion margin))
Therefore, actual Advanced switching time (Tsoft) is defined as follows.
The total time of 1 time advanced switching needs 2 times of the switching time
Tsoft= Switching time×2
Switching time
Invalid time
Advanced switching time
Advanced switching time Tsoft is, Tsoft = switching time and invalid time(= switching time x 2).
2-2. About the data transmitting timing in same block state and the switching movement
■ Transmitting example 1
A time chart to the start of switching from the data transmission is as following.
At first, the example are shown as below when the interval time is sufficient in which transmission of the same
blocks.
(Sufficient interval means time which is more than Tsoft maximum value, 11.2msec x 1.4(dispersion margin) x 2 =
31.4msec
AKS
select
slave
data
(F1 0dB)
80 28
(F1 –INFdB)
80 28 FF
I2C BUS
80
Interval≧Tsoft maximum(=31.4msec)
Fader F1
Switching time
Fader F1
Switching time
Invalid time
Invalid time
Advanced switching time
OUTF1
■ Transmitting example 2
Next, when a transmitting interval isn't sufficient (when it is shorter than the above interval), the example is shown.
In case data are transmitted during the first switching movement, the next switching movement is started in
succession after the first switching movement is finished.
AKS
s elect
s lave
data
(F1 0dB)
80 28
(F1 –INFdB)
80 28 FF
I2C B US
80
Interval＜ Tsoft maximum
(=31.4msec )
Fader F1
Switching time
Fader F1
Switching time
Inva lid time
Inva lid time
Advanced switching time
OU TF 1
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■ Transmitting example 3
Next, the example of the switching movement when a transmitting interval was shortened more is shown.
Inside the IC, It has the buffer which memorizes data, and a buffer always does transmitting data.
But, data of +4dB which transmitted to the second become invalid with this example because the buffer holds only
the latest data.
This is invalid as a result.
Only an end is effective in the data transmitted during F1 switching.
(FaderF1 0dB)
(FaderF1 +4B)
80 28 04
(FaderF1 -8B)
I2C BUS
80 28 80
80 28 88
Replacement
0dB
+4dB
-8dB
Fader F1 bufferd data
Data of 0dB received : -∞→0dB
Data of -8dB received from buffer : 0dB→-8dB
Fader F1
Fader F1
switching time
Invalid time
switching time
Invalid time
Advanced switching time
■ Transmitting example 4
At first, transmitting data are stored in the maintenance data, and next it is written in the setup data in which gain
is set up to. But, in case there is no difference between the transmitting data and the setup data as a refresh data,
Advanced switch movement isn't started.
(FaderF1 0dB)
80 28 80
(FaderF1 0dB)
80 28 80
I2C BUS
Because receiving as refresh-data,
Advanced switching doesn't start.
Refresh data
Fader F1
switching time
Invalid
time
Advanced switching time
2-3. About the data transmitting timing and the switching movement in several block state
When data are transmitted to several blocks, treatment in the BS (block state) unit is carried out inside the IC. The
order of advanced switch movement start is decided in advance dependent on BS.
BS1
BS2
Fader F1
‘h28
BS3
Fader R1
‘h2A
Volume
Fader F2
‘h29
Fader R2
‘h2B
‘h20
Loudness
‘h75
Bass
‘h51
Treble
‘h57
Select address
The order of advanced switch start
※It is possible that blocks in the same BS start switching at the same timing.
Figure 16. The example of the timing of command of in I2Cdata transmitting
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■ Transmitting example 5
About the transmission to several blocks also, as explained in the previous section, though there is no restriction of the
I2C BUS data transmitting timing, the start timing of switching follows the figure of previous page, figure16.
Therefore, it isn't based on the data transmitting order, and an actual switching order becomes as the figure16
(Transmitting example 6).
Each block data is being transmitted separately in the transmitting example 5, but it becomes the same result even if
data are transmitted by automatic increment.
AKS
select
slave
data
(VOLUME 0dB)
80 20 80
( FaderF 1 +6dB)
( FaderR 1 +6dB)
80 2A 06
I2C BUS
80
28
06
Start after advanced switch of
VOLUME
Start after advanced switch of
Fader F1
Volume
Fader F1
Switching time
Invalid
time
Fader R1
Switching time
Invalid
time
Invalid
time
Advanced switch time Switching time
OUTF1
OUTR1
■ Transmitting example 6
When an actual switching order is different from the transmitting order or data except for the same BS are transmitted at
the timing when advanced switch movement isn't finished, switching of the next BS is done after the present switching
completion .
select
slave
data
(VOLUME 0dB)
80 20 80
(FaderR1 0dB)
80 2A 80
(FaderF1 0dB)
80 28 80
I2C BUS
Fader F1
Switching time
Fader R1
Switching time
VOLUME
Switching time
Invalid time
Invalid time
Invalid time
Advanced switching time
■ Transmitting example 7
In this example, data of BS2 and BS3 are transmitted during Advances switching of BS2(same BS2 group) .
The different data (BASS) of the same BS2 group during advanced switching of (F1) are transmitted.
BS2
BS2
BS3
(FaderF1 0dB)
(FaderR1 0dB)
(BASS +6dB)
I2C B US
80
28
80
80
51
06
80
2A
80
Fader R1 buffered data
BASS buffered data
6dB
0dB received -∞→0dB
0dB received from buffer –INF→ 0dB
6dB received from buffer 0dB→+6dB
Fader R1
BASS
Fader F1
switching time
Invalid time
switching time
Invalid time
switching time
Invalid time
Advanced switching time
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2-4. About gain switching of TONE(Bass/ Treble)
When gain is changed from boost to cut (or, from cut to boost), advanced switching is two-step transition movement
that it go through 0dB to prevent the occurrence of the switching noise. And when boost/cut doesn't change between
before switching and after switching, advanced switching is the same as 2-2, 2-3. About advanced switching time, it is
same time length as other switching time length.
■ Transmitting example 8
In case changing Bass gain +15dB from -15dB
(BA SS+15dB)
I2C B US
80
51
0F
Tsoft=switching time×2
BASS
BASS
Switching time
Switching time
Advanced switching time
-15dB → 0dB
0dB → +15dB
OUTF1
【3】Advanced switch transmitting timing list
3-1. Volume/Fader(F1,F2,R1,R2)/TONE(BASS,TREBLE,LOUDNESS)
Advanced switch stand by
Advanced switch active
optional
Transmission timing
Start timing
optional
Starts right after the data
transmission
Starts right after present
switching was finished.
Advanced switching
time
1
※
Tsoft
Tsoft
3-2. TONE BOOST ⇔ CUT
Advanced switch stand by
Advanced switch active
optional
Transmission timing
Start timing
optional
Starts right after the data
transmission
Starts right after present
switching was finished.
Advanced switching
time
2
※
Tsoft
Tsoft
※1 Advanced switching time Tsoft equalls to 2times of swithcing time.
※2 About Tsoft of TONE BOOST⇔CUT, the time length until gain switching finishes is equal to 2times of swithcing
time, because it go through 0dB when switching from initial gain to requested gain. In this case, Advanced
switching time is same as ※1 above.
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●Application Circuit Diagram
GND Isolation
CN2
CP2
B2
A2
D2
20
SCL
13
SDA
12
GND
11
OUTF2
10μ
OUTR2
10μ
2.2μ
2.2μ
2.2μ
2.2μ
2.2μ
19
18
17
16
15
14
Advanced
switch
100k
100k
100k
25k
25k
25k
I2C BUS
LOGIC
25k
■Fader Volume
Gain:0dB～-63ｄB、-INF/1dB step
■Bass/Treble (f0=100/10k)
Gain：+20dB～-20dB/1dB step
■Loudness f0=650,1.3kHz
Input selector
(3 single-end and 1 stereo ISO)
Gain: 15dB～0dB/1dB step
Input Gain
■VOLUME
ATT：0dB～-36dB/1dB step, -INF dB
■Input Gain
Gain：+20dB～0dB/1dB step
Input Gain
Input selector
(3 single-end and 1 stereo ISO)
■Output Gain
Gain：0dB/6dB
F1/F2/R1/R2
25k
100k
25k
25k
VCC
VREF
10
100k
100k
25k
1
2
3
4
5
6
7
8
9
0.1μ
10μ
N.C.
2.2μ
CN1
GND Isolation
2.2μ
D1
2.2μ
B1
2.2μ
2.2μ
10μ
10μ
10μ
VREF
CP1
A1
OUTF1 OUTR1
VCC
（About single input C, it is possible to change from
single input to GND Isolation input.）
UNIT
RESISTANCE: Ω
CAPACITANCE: F
Figure 17. Application Circuit Diagram
Notes on wiring
①Please connect the decoupling capacitor of a power supply in the shortest distance as much as possible to GND.
②Lines of GND shall be one-point connected.
③Wiring pattern of Digital shall be away from that of analog unit and cross-talk shall not be acceptable.
④Lines of SCL and SDA of I2C BUS shall not be parallel if possible.
The lines shall be shielded, if they are adjacent to each other.
⑤Lines of analog input shall not be parallel if possible. The lines shall be shielded, if they are adjacent to each other.
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●Thermal Derating Curve
About the thermal design by the IC
Characteristics of an IC have a great deal to do with the temperature at which it is used, and exceeding absolute maximum
ratings may degrade and destroy elements. Careful consideration must be given to the heat of the IC from the two standpoints
of immediate damage and long-term reliability of operation.
Reference data
SSOP-B20
1.5
Measurement condition: ROHM Standard board
board Size：70×70×1.6(㎣)
material：A FR4 grass epoxy board
(3% or less of copper foil area)
937mW
1.0
θja = 133.3℃/W
0.5
0.0
85
0
25
50
75
100
125
150
Ambient Temperature Ta（℃）
Figure 18. Temperature Derating Curve
Note) Values are actual measurements and are not guaranteed.
Power dissipation values vary according to the board on which the IC is mounted.
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●Terminal Equivalent Circuit and Description
Terminal
Terminal Name
Equivalent Circuit
Terminal Description
Voltage
A terminal for signal input.
The input impedance is 100kΩ(typ).
A1
A2
B1
4.2
B2
D1
D2
A terminal for positive input of ground
isolation amplifier.
CP1
4.2
CP2
A terminal for negative input of ground
isolation amplifier.
CN1
4.2
CN2
A terminal for clock input of I2C BUS
communication.
SCL
-
VCC
A terminal for data input of I2C BUS
communication.
SDA
-
1.65V
GND
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Terminal
Name
Terminal
Voltage
Equivalent Circuit
Terminal Description
OUTF1
OUTR1
OUTR2
OUTF2
A terminal for fader output.
4.2
N.C.
VCC
GND
-
8.5
0
Non connect terminal
Power supply terminal.
Ground terminal.
BIAS terminal.
Voltage for reference bias of analog
signal system. The simple pre-charge
circuit and simple discharge circuit for
an external capacitor are built in.
VREF
4.2
※The figure in the pin explanation and input/outpuuivalent circuit is reference value, it doesn’t guarantee the value.
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●Operational Notes
1. Absolute-Maximum-Rating Voltage
When voltage is impressed to VCC exceeding absolute-maximum-rating voltage, circuit current increase rapidly, and it
may result in property degradation and destruction of a device.
When impressed by a VCC terminal (9pin) especially by serge examination etc., even if it includes an of operation
voltage + serge pulse component, be careful not to impress voltage (about 14V) greatly more than
absolute-maximum-rating voltage.
2. About a signal input part
1) About constant set up of input coupling capacitor
In the signal input terminal, the constant setting of input coupling capacitor C(F) be sufficient input impedance
RIN(Ω) inside IC and please decide. The first HPF characteristic of RC is composed.
G〔dB〕
C〔F〕
0
RIN
〔Ω〕
A(f)
SSH
f〔Hz〕
INPUT
Figure 19. Input SHORT circuit
(2πfCR IN)2
A(f)
2
1 (2πfCR IN)
2) About the input SHORT
SHORT mode is the command which makes switch SSH =ON an input selector part and input impedance RIN of all
terminals, and makes resistance small. Switch SSH is OFF when not choosing a SHORT command.
A constant time becomes small at the time of this command twisting to the resistance inside the capacitor
connected outside and LSI. The charge time of a capacitor becomes short.
Since SHORT mode turns ON the switch of SSH and makes it low impedance, please use it at the time of a
non-signal.
3. About output load characteristics
The usages of load for output are below (reference). Please use the load more than 10kΩ(TYP).
The target output terminal
Terminal
No.
7
Terminal
Terminal
Name
OUTF1
OUTF2
Terminal
Name
OUTR1
OUTR2
No.
8
14
15
VCC=8.5V
THD+n=1%
BW=400 to 30kHz
Rload[Ω]
Fig.16 Output Load Characteristic Vcc=8.5V(reference data)
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Status of this document
The Japanese version of this document is formal specification. A customer may use this translation version 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
●Ordering Information
B
D
3
7
5
0
E 2
3
F
V
Part Number
Packaging and forming specification
Package
FV: SSOP-B20
E2: Embossed tape and reel
(SSOP-B20)
●Physical Dimension Tape and Reel Information
SSOP-B20
<Tape and Reel information>
6.5 0.2
Tape
Embossed carrier tape
2500pcs
20
11
Quantity
E2
Direction
of feed
The direction is the 1pin of product is at the upper left when you hold
reel on the left hand and you pull out the tape on the right hand
(
)
1
10
0.15 0.1
0.1
0.65
Direction of feed
1pin
0.22 0.1
Reel
(Unit : mm)
Order quantity needs to be multiple of the minimum quantity.
∗
●Marking Diagram(s)(TOP VIEW)
SSOP-B20(TOP VIEW)
B D 3 7 5 0 3
Part Number Marking
LOT Number
1PIN MARK
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●Revision History
Date
Revision
Changes
03.Aug.2012
03.Jul.2013
001
002
New Release
2/28 Figure2 Correction
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Notice
Precaution on using ROHM Products
1. Our Products are designed and manufactured for application in ordinary electronic equipments (such as AV equipment,
OA equipment, telecommunication equipment, home electronic appliances, amusement equipment, etc.). If you
intend to use our Products in devices requiring extremely high reliability (such as medical equipment (Note 1), transport
equipment, traffic equipment, aircraft/spacecraft, nuclear power controllers, fuel controllers, car equipment including car
accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or
serious damage to property (“Specific Applications”), please consult with the ROHM sales representative in advance.
Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any
damages, expenses or losses incurred by you or third parties arising from the use of any ROHM’s Products for Specific
Applications.
(Note1) Medical Equipment Classification of the Specific Applications
JAPAN
USA
EU
CHINA
CLASSⅢ
CLASSⅣ
CLASSⅡb
CLASSⅢ
CLASSⅢ
CLASSⅢ
2. ROHM designs and manufactures its Products subject to strict quality control system. However, semiconductor
products can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities, adequate
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a failure or malfunction of our Products may cause. The following are examples of safety measures:
[a] Installation of protection circuits or other protective devices to improve system safety
[b] Installation of redundant circuits to reduce the impact of single or multiple circuit failure
3. Our Products are designed and manufactured for use under standard conditions and not under any special or
extraordinary environments or conditions, as exemplified below. Accordingly, ROHM shall not be in any way
responsible or liable for any damages, expenses or losses arising from the use of any ROHM’s Products under any
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extraordinary environments or conditions (as exemplified below), your independent verification and confirmation of
product performance, reliability, etc, prior to use, must be necessary:
[a] Use of our Products in any types of liquid, including water, oils, chemicals, and organic solvents
[b] Use of our Products outdoors or in places where the Products are exposed to direct sunlight or dust
[c] Use of our Products in places where the Products are exposed to sea wind or corrosive gases, including Cl2,
H2S, NH3, SO2, and NO2
[d] Use of our Products in places where the Products are exposed to static electricity or electromagnetic waves
[e] Use of our Products in proximity to heat-producing components, plastic cords, or other flammable items
[f] Sealing or coating our Products with resin or other coating materials
[g] Use of our Products without cleaning residue of flux (even if you use no-clean type fluxes, cleaning residue of
flux is recommended); or Washing our Products by using water or water-soluble cleaning agents for cleaning
residue after soldering
[h] Use of the Products in places subject to dew condensation
4. The Products are not subject to radiation-proof design.
5. Please verify and confirm characteristics of the final or mounted products in using the Products.
6. In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse. is applied,
confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power
exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively affect
product performance and reliability.
7. De-rate Power Dissipation (Pd) depending on Ambient temperature (Ta). When used in sealed area, confirm the actual
ambient temperature.
8. Confirm that operation temperature is within the specified range described in the product specification.
9. ROHM shall not be in any way responsible or liable for failure induced under deviant condition from what is defined in
this document.
Precaution for Mounting / Circuit board design
1. When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product
performance and reliability.
2. In principle, the reflow soldering method must be used; if flow soldering method is preferred, please consult with the
ROHM representative in advance.
For details, please refer to ROHM Mounting specification
Notice - GE
Rev.002
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Precautions Regarding Application Examples and External Circuits
1. If change is made to the constant of an external circuit, please allow a sufficient margin considering variations of the
characteristics of the Products and external components, including transient characteristics, as well as static
characteristics.
2. You agree that application notes, reference designs, and associated data and information contained in this document
are presented only as guidance for Products use. Therefore, in case you use such information, you are solely
responsible for it and you must exercise your own independent verification and judgment in the use of such information
contained in this document. ROHM shall not be in any way responsible or liable for any damages, expenses or losses
incurred by you or third parties arising from the use of such information.
Precaution for Electrostatic
This Product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. Please take proper
caution in your manufacturing process and storage so that voltage exceeding the Products maximum rating will not be
applied to Products. Please take special care under dry condition (e.g. Grounding of human body / equipment / solder iron,
isolation from charged objects, setting of Ionizer, friction prevention and temperature / humidity control).
Precaution for Storage / Transportation
1. Product performance and soldered connections may deteriorate if the Products are stored in the places where:
[a] the Products are exposed to sea winds or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2
[b] the temperature or humidity exceeds those recommended by ROHM
[c] the Products are exposed to direct sunshine or condensation
[d] the Products are exposed to high Electrostatic
2. Even under ROHM recommended storage condition, solderability of products out of recommended storage time period
may be degraded. It is strongly recommended to confirm solderability before using Products of which storage time is
exceeding the recommended storage time period.
3. Store / transport cartons in the correct direction, which is indicated on a carton with a symbol. Otherwise bent leads
may occur due to excessive stress applied when dropping of a carton.
4. Use Products within the specified time after opening a humidity barrier bag. Baking is required before using Products of
which storage time is exceeding the recommended storage time period.
Precaution for Product Label
QR code printed on ROHM Products label is for ROHM’s internal use only.
Precaution for Disposition
When disposing Products please dispose them properly using an authorized industry waste company.
Precaution for Foreign Exchange and Foreign Trade act
Since our Products might fall under controlled goods prescribed by the applicable foreign exchange and foreign trade act,
please consult with ROHM representative in case of export.
Precaution Regarding Intellectual Property Rights
1. All information and data including but not limited to application example contained in this document is for reference
only. ROHM does not warrant that foregoing information or data will not infringe any intellectual property rights or any
other rights of any third party regarding such information or data. ROHM shall not be in any way responsible or liable
for infringement of any intellectual property rights or other damages arising from use of such information or data.:
2. No license, expressly or implied, is granted hereby under any intellectual property rights or other rights of ROHM or any
third parties with respect to the information contained in this document.
Other Precaution
1. This document may not be reprinted or reproduced, in whole or in part, without prior written consent of ROHM.
2. The Products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written
consent of ROHM.
3. In no event shall you use in any way whatsoever the Products and the related technical information contained in the
Products or this document for any military purposes, including but not limited to, the development of mass-destruction
weapons.
4. The proper names of companies or products described in this document are trademarks or registered trademarks of
ROHM, its affiliated companies or third parties.
Notice - GE
Rev.002
© 2014 ROHM Co., Ltd. All rights reserved.
Daattaasshheeeett
General Precaution
1. Before you use our Pro ducts, you are requested to care fully read this document and fully understand its contents.
ROHM shall not be in an y way responsible or liable for failure, malfunction or accident arising from the use of a ny
ROHM’s Products against warning, caution or note contained in this document.
2. All information contained in this docume nt is current as of the issuing date and subj ect to change without any prior
notice. Before purchasing or using ROHM’s Products, please confirm the la test information with a ROHM sale s
representative.
3. The information contained in this doc ument is provi ded on an “as is” basis and ROHM does not warrant that all
information contained in this document is accurate an d/or error-free. ROHM shall not be in an y way responsible or
liable for any damages, expenses or losses incurred by you or third parties resulting from inaccuracy or errors of or
concerning such information.
Notice – WE
Rev.001
© 2014 ROHM Co., Ltd. All rights reserved.
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