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Datasheet
Analog Audio Processors
Sound Processors with Built-in
Surround Sound Function
BD3490FV
●General Description
Built in stereo 4 input selectors and volume that there is
not an impedance change of a volume terminal. And this
is sound processor can realize 2-band equalizer
(bass/treble, gain±14dB / 2dB_step) and bass-boost,
output-gain, surround by external components.
●Key Specifications
„ Current upon no signal:
„ Total harmonic distortion:
„ Maximum input voltage:
„ Cross-talk between selectors:
„ Volume Control range:
„ Output noise voltage:
„ Residual output noise voltage:
„ Operating Range of Temperature:
●Features
„ Built in stereo 4 input selectors (single end).
„ Built-in input gain controller for volume of a portable
audio input.
„ When the volume setting exchanging, it can use a
volume input terminal as a microphone input terminal
because there is not an impedance change of a
volume input terminal.
„ Bi-CMOS process is suitable for the design of low
current and low energy. And it provides more quality
for Bi-CMOS small scale regulator and heat in a set.
„ The package of this IC is SSOP-B28. It gathers a
sound input terminals, sound output terminals
respectively and it arranges them, to be arranging
facilitates the laying-out of PCB pattern and reduces
PCB area to one-way in the flow of the signal.
●package(s)
SSOP-B28
W(Typ.) x D(Typ.) x H(Max.)
10.00mm x 7.60mm x 1.35mm
●Applications
„ It is the optimal for the mini compo or micro compo.
Besides, it is possible to use for the audio equipment
of TV, DVD etc with all kinds
●Typical Application Circuit
FIL
GND
SDA
SSOP-B28
VCC
SCL
OUT1
OUT2
22k
28
FIL
4.7k
0.0047μ
4.7μ
4.7μ
10μ
0.1μ
10μ
27
26
24
25
SDA
GND
4.7k
0.1μ
0.1μ
23
VCC
SCL
I2 C BUS LOGIC
VCC/2
7mA(Typ.)
0.002%(Typ.)
2.4Vrms(Typ.)
100dB(Typ.)
0dB to -87dB
5μVrms(Typ.)
5μVrms(Typ.)
-40℃ to +85℃
OUT1
22
21
SB1
20
SR
SB2
19
0.1μ
18
BCB1
OUT2
17
BCA1
0.1μ
16
BCA2
15
BCB2
VCC
・ Bass
･Gain=± 14dB/2dB step
Treble／ Bass
Surround
・ Treble
･Gain=± 14dB/2dB step
・ Volume
･0dB~ -87dB/1dB step, -∞ dB, Independent control
・ Input Gain
･0~+8dB/2dB step 12, 16, 20dB
・ Surround
･Gain=OFF, Low, Middle, High
Volum e
Volum e
Input Gain
Input Selector
50k
A1
1
50k
2
1μ
A1
50k
B1
A2
A2
4
3
1μ
50k
1μ
B1
50k
5
1μ
B2
50k
C1
B2
C2
6
1μ
C1
50k
D1
C2
1μ
D1
SEL2
9
8
7
1μ
50k
D2
SEL1
10
VOL1
2.2μ
1μ
VOL2
12
11
2.2μ
TC2
13
0.0047μ
TC1
14
0.0047μ
D2
Figure 1. Application Circuit Diagram
○Product structure：Silicon monolithic integrated circuit
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Datasheet
BD3490FV
●Pin Configuration
SSOP-B28
(TOP VIEW)
A1
1
28 FIL
A2
2
27 GND
B1
3
26 SDA
B2
4
25 SCL
C1
5
24 VCC
C2
6
23 OUT1
D1
7
22 SB1
D2
8
21 SR
SEL2
9
20 SB2
SEL1 10
19 OUT2
VOL1 11
18 BCB1
VOL2 12
17 BCA1
TC2 13
16 BCA2
TC1 14
15 BCB2
Figure 2. Pin configuration
●Pin Descriptions
Terminal
Terminal
Name
No.
1
A1
Description
A input terminal of 1ch
Terminal
No.
15
Terminal
Name
BCB2
Description
Bass filter terminal of 2ch
2
A2
A input terminal of 2ch
16
BCA2
Bass filter terminal of 2ch
3
B1
B input terminal of 1ch
17
BCA1
Bass filter terminal of 1ch
4
B2
B input terminal of 2ch
18
BCB1
Bass filter terminal of 1ch
5
C1
C input terminal of 1ch
19
OUT2
Output terminal of 2ch
6
C2
C input terminal of 2ch
20
SB2
Bass boost terminal of 2ch
7
D1
D input terminal of 1ch
21
SR
Surround terminal
Bass boost terminal of 1ch
8
D2
9
SEL2
D input terminal of 2ch
22
SB1
SEL output terminal of 2ch
23
OUT1
Output terminal of 1ch
10
SEL1
SEL output terminal of 1ch
24
VCC
Power supply terminal
11
VOL1
Volume input terminal of 1ch
25
SCL
I2C Communication clock terminal
12
VOL2
Volume input terminal of 2ch
26
SDA
I2C Communication data terminal
13
TC2
Treble filter terminal of 2ch
27
GND
GND terminal
14
TC1
Treble filter terminal of 1ch
28
FIL
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Datasheet
BD3490FV
●Block Diagram
28
27
FIL
26
25
SDA
GND
SCL
2
I C BUS LOGIC
VCC/2
24
23
VCC
OUT1
22
21
SB1
20
19
SB2
SR
OUT2
18
BCB1
17
16
BCA1
BCA2
15
BCB2
VCC
・ Bass
･Gain=±14dB/2dB step
Treble／Bass
Surround
・ Treble
･Gain=±14dB/2dB step
・ Volume
･0dB~ -87dB/1dB step, -∞dB, Independent control
・ Input Gain
･0~+8dB/2dB step 12, 16, 20dB
・ Surround
･Gain=OFF, Low, Middle, High
Volume
Volume
Input Gain
Input Selector
50k
50k
A1
A2
1
2
50k
50k
B1
3
B2
4
50k
50k
C1
5
C2
6
50k
50k
D1
D2
SEL2
9
8
7
SEL1
10
VOL1
11
VOL2
TC2
12
13
TC1
14
Figure 3. Block Diagram
●Absolute Maximum Ratings
Parameter
Symbol
Limits
Unit
Power supply Voltage
VCC
V
Input Voltage
Vin
Power Dissipation
Pd
10.0
VCC+0.3 to GND-0.3
SCL,SDA only 7 to GND-0.3
1063 ※1
mW
Storage Temperature
Tastg
-55 to +150
℃
V
1 This value decreases 8.5mW/℃ for Ta=25℃ or more.
ROHM standard board shall be mounted. Thermal resistance θja = 117.6(℃/W)。
ROHM standard board
Size:70×70×1.6(㎣)
Material: A FR4 grass epoxy board (3% or less of copper foil area)
●Operating Range
Parameter
Symbol
Limits
Power supply voltage
VCC
4.75 to 9.5
V
Temperature
Topr
-40 to +85
℃
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Datasheet
BD3490FV
BLOCK
●Electrical Characteristic
(Unless specified particularly, Ta=25℃, VCC=9.0V, f=1kHz, Vin=1Vrms, Rg=600Ω, RL=10kΩ, A input, Input gain 0dB,
Volume 0dB, Bass 0dB, Treble 0dB, Surround off)
Limit
Symbol
Unit
Typ.
Max.
Condition
IQ
－
7
15
mA
No signal
Voltage gain
GV
-1.5
0
1.5
dB
Gv=20log(VOUT/VIN)
Channel balance
CB
-1.5
0
1.5
dB
CB = GV1-GV2
Total harmonic distortion
THD+N
－
0.002
0.1
％
VOUT=1Vrms
BW=400-30KHz
Output noise voltage *
VNO1
－
5
20
μVrms
Rg = 0Ω
BW = IHF-A
Residual output noise voltage *
VNO1
－
5
20
μVrms
Rg = 0Ω
BW = IHF-A
Cross-talk between channels *
CTC
－
-100
-80
dB
Input impedance
RIN
35
50
65
kΩ
Maximum input voltage
VIM
2.1
2.4
-
Vrms
VIM at THD+N(VOUT)=1％
BW=400-30KHz
Cross-talk between selectors *
CTS
－
-100
-84
dB
Rg = 0Ω
CTS=20log(VOUT/VOUT)
BW = IHF-A
Control range
GV MAX
-90
-87
-84
dB
VIN=2Vrms
Gv=20log(VOUT/VIN)
Maximum attenuation *
GV MIN
－
-100
-80
dB
Volume = -∞
Gv=20log(VOUT/VIN)
Maximum boost gain
GB BST
11.5
14
16.5
dB
Gain = 14dB, f = 100Hz
VIN=100mVrms
Gv=20log(VOUT/VIN)
Maximum cut gain
GB CUT
-16.5
-14
-11.5
dB
Gain = -14dB, f = 100Hz
VIN=2Vrms
Gv=20log(VOUT/VIN)
Maximum boost gain
GT BST
11.5
14
16.5
dB
Gain = 14dB, f = 100Hz
VIN=100mVrms
Gv=20log(VOUT/VIN)
Maximum cut gain
GT CUT
-16.5
-14
-11.5
dB
Gain = -14dB, f = 100Hz
VIN=2Vrms
Gv=20log(VOUT/VIN)
TREBLE
BASS
GENERAL
Current upon no signal
INPUT SELECTOR
Min.
VOLUME
Item
Rg = 0Ω
CTC=20log(VOUT/VOUT)
BW = IHF-A
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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Datasheet
BD3490FV
●Typical Performance Curve(s)
5
8
4
7
3
6
2
Operating range
1
Gain [dB]
Iq [mA]
5
4
0
-1
3
-2
2
-3
1
-4
-5
0
0
2
4
6
8
10
10
100
1000
10000
100000
Frequency [Hz]
VCC [V]
Figure 4. Vcc vs Iq
Figure 5. Gain vs Freq.
10.000
10.000
22
20
18
1.000
1.000
16
10kHz
14
1 kHz
100Hz
0.100
Gain [dB]
0.100
Vo [Vrms]
THD+n [%]
12
10
8
6
0.010
4
0.010
2
0
0.001
0.001
0.010
0.100
1.000
-2
0.001
10.000
10
Figure 6. THD+n vs Vo
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100
1000
10000
100000
Frequency [Hz]
Vin [Vrms]
Figure 7. InputGain vs Freq.
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Datasheet
BD3490FV
5
-30
Measurement filter
= 30kHz_LPF
0
Measurement filter
= 30kHz_LPF
-40
-5
-50
-10
Volume setting = 0 to -40dB
Volume setting = -41 to -87dB
-60
Gain [dB]
Gain [dB]
-15
-20
-70
-25
-80
-30
-90
-35
Volume setting = -∞
-100
-40
-45
-110
10
100
1000
10000
100000
10
100
Frequency [Hz]
1000
10000
100000
Frequency [Hz]
Figure 9. Volume attenuation 2
Figure 8. Volume attenuation 1
16
16
180
High
High
14
12
14
135
12
90
8
Gain [dB]
Gain [dB]
Middle
6
10
45
8
0
6
-45
Low
Low
4
Phase [° ]
Middle
10
Gain
4
-90
2
2
0
Phase
Off
0
-2
10
100
1000
10000
100000
100
1000
10000
-180
100000
F requency [Hz]
F requency [Hz]
Figure 10. OutputGain vs Freq
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10
-135
Figure 11. BassBoost+Surround
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Datasheet
BD3490FV
●CONTROL SIGNAL SPECIFICATION
(1) Electrical specifications and timing for bus lines and I/O stages
SDA
t
BUF
t
t
LOW
t
R
t
F
HD;STA
t
SP
SCL
t
P
HD;STA
t
HD;DAT
t
t
HIGH
SU;DAT
t
SU;STA
t
Sr
SU;STO
S
P
Figure 12. Definition of timing on the I2C-bus
Table 1. Characteristics of the SDA and SCL bus lines for I2C-bus devices
2
Parameter
Fast-mode I C-bus
Symbol
Min.
Max.
Unit
1
SCL clock frequency
fSCL
0
400
kHz
2
Bus free time between a STOP and START condition
Hold time (repeated) START condition. After this period, the first clock
pulse is generated
LOW period of the SCL clock
tBUF
1.3
－
μS
tHD;STA
0.6
－
μS
tLOW
1.3
－
μS
3
4
5
HIGH period of the SCL clock
tHIGH
0.6
－
μS
6
Set-up time for a repeated START condition
tSU;STA
0.6
－
μS
7
Data hold time:
tHD;DAT
300*
－
μS
8
Data set-up time
tSU;DAT
300*
－
ns
9
Set-up time for STOP condition
tSU;STO
0.6
－
μS
All values referred to VIH min. and VIL max. Levels (see Table 2).
2
Table 2. Characteristics of the SDA and SCL I/O stages for I C-bus devices
Parameter
Symbol
Fast-mode devices
Min.
Max.
Unit
10
LOW level input voltage: fixed input levels
VIL
-0.3
1
V
11
HIGH level input voltage: fixed input levels
VIH
2.3
5
V
Pulse width of spikes which must be suppressed by the input filter.
tSP
0
50
ns
VOL1
0
0.4
V
Ii
-10
10
μA
12
13
14
LOW level output voltage (open drain or open collector): at 3mA sink
current.
Input current each I/O pin with an input voltage between 0.4V and 0.9
VDDmax.
SCL clock frequency:250kHz
Figure 13. A command timing example in the I2C data transmission
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Datasheet
BD3490FV
(2) I2C BUS FORMAT
S
1bit
MSB
LSB
Slave Address
8bit
S
Slave Address
A
Select Address
Data
P
MSB
LSB
MSB
LSB
A
Select Address
A
Data
A
P
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)
2
(3) I C BUS Interface Protocol
1) Basic form
S
Slave Address
MSB
A
LSB
Select Address
MSB
LSB
A
Data
MSB
A
P
LSB
2) Automatic increment (Assigned select Address is increased according to the number of data.)
S
Slave Address
A
Select Address
A
Data1
A
Data2
A ････
DataN
A P
MSB
LSB
MSB
LSB
MSB
LSB MSB
LSB
MSB
LSB
(Example) No.1. Data1 shall be set as data of address specified by Select Address.
No.2. Data2 shall be set as data of next one of address specified by the No.1.
No.3. DataN shall be set as data of N times incremented one of address specified by the No.1.
3) Configuration unavailable for transmission (In this case, only Select Address1 is set.)
S Slave Address
MSB
LSB
A
Select Address1
MSB
LSB
A Data A Select Address 2
MSB LSB MSB
LSB
A Data A P
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
LSB
A6
A5
A4
A3
A2
A1
A0
R/W
1
0
0
0
0
0
0
0
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Datasheet
BD3490FV
(5) Select Address & Data
Select
Address
(hex)
MSB
D7
D6
D5
D4
D3
Input Selector
04
0
0
0
0
0
Input gain
06
0
0
0
Volume gain 1ch
21
1
Volume Attenuation 1ch
Volume gain 2ch
22
1
Volume Attenuation 2ch
Bass gain
51
Bass
Boost/Cut
0
0
0
Bass Gain
0
Treble gain
57
Treble
Boost/Cut
0
0
0
Treble Gain
0
Gain
78
Surround
Mode
0
0
0
Test Mode
F0
0
0
0
0
0
0
0
0
System Reset
FE
1
0
0
0
0
0
0
1
Items to be set
Data
LSB
D2
D1
D0
Input Selector
Input Gain
0
Surround gain
Notes of data format
Upon continuous data transfer, the Select Address is circulated by the automatic increment function as shown below
→04→06→21→22→51→57→78
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Datasheet
BD3490FV
Select address 04 (hex)
Mode
MSB
D7
D6
D5
A
B
C
D
INPUT SHORT
INPUT MUTE
0
0
Input Selector
D4
D3
D2
0
0
0
0
Prohibition
0
0
0
1
1
1
1
D1
0
LSB
D0
0
0
1
1
0
1
0
1
1
0
1
1
1
0
0
INPUT MUTE : Mute is done at the input signal in the part of Input Selector.
Select address 06 (hex)
Gain
0dB
2dB
4dB
6dB
8dB
12dB
16dB
20dB
MSB
D7
D6
D5
0
0
0
Prohibition
Input Gain
D4
D3
0
0
0
0
0
0
0
0
0
1
0
1
1
0
1
0
0
1
0
1
1
0
1
0
1
1
1
1
1
1
1
1
D2
0
0
1
1
0
1
0
1
0
1
0
1
0
0
1
1
D1
0
1
0
1
0
0
0
0
1
1
1
1
0
1
0
1
LSB
D0
0
: Initial condition
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Datasheet
BD3490FV
Select address 21, 22 (hex)
MSB
ATT
D7
D6
Volume Attenuation
D5
D4
D3
D2
D1
LSB
D0
0dB
0
0
0
0
0
0
0
-1dB
0
0
0
0
0
0
1
-2dB
0
0
0
0
0
1
0
-3dB
0
0
0
0
0
1
1
-4dB
0
0
0
0
1
0
0
-5dB
0
0
0
0
1
0
1
-6dB
0
0
0
0
1
1
0
-7dB
0
0
0
0
1
1
1
-8dB
0
0
0
1
0
0
0
-9dB
0
0
0
1
0
0
1
-10dB
0
0
0
1
0
1
0
-11dB
0
0
0
1
0
1
1
-12dB
0
0
0
1
1
0
0
-13dB
0
0
0
1
1
0
1
-14dB
0
0
0
1
1
1
0
-15dB
0
0
0
1
1
1
1
0
0
1
0
0
0
0
-17dB
0
0
1
0
0
0
1
-18dB
0
0
1
0
0
1
0
-19dB
0
0
1
0
0
1
1
-20dB
0
0
1
0
1
0
0
-21dB
0
0
1
0
1
0
1
-22dB
・
・
・
-83dB
0
・
・
・
1
0
・
・
・
0
1
・
・
・
1
0
・
・
・
0
1
・
・
・
0
1
・
・
・
1
0
・
・
・
1
-84dB
1
0
1
0
1
0
0
-85dB
1
0
1
0
1
0
1
-86dB
1
0
1
0
1
1
0
-87dB
1
0
1
0
1
1
1
Prohibition
1
・
・
1
0
・
・
1
1
・
・
1
1
・
・
1
0
・
・
1
0
・
・
1
0
・
・
0
-∞dB
1
1
1
1
1
1
1
-16dB
1
: Initial condition
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TSZ22111・15・001
11/30
TSZ02201-0V2V0E100030-1-2
2012.10.05 Rev.001
Datasheet
BD3490FV
Select address 51(hex)
Gain
MSB
D2
D1
0dB
0
0
0
2dB
0
0
1
4dB
0
1
0
0
1
1
1
0
0
10dB
1
0
1
12dB
1
1
0
14dB
1
1
1
8dB
Mode
Bass
Boost
/Cut
D6
0
MSB
D7
Boost
0
Cut
1
D5
D4
LSB
D3
6dB
D7
Bass Gain
0
0
Bass Boost/Cut
D6
D5
D4
0
0
0
D6
D5
D3
D0
0
LSB
D2
D1
Bass gain
D0
0
Select address 57(hex)
Gain
MSB
Treble Gain
D2
D1
0dB
0
0
0
2dB
0
0
1
4dB
0
1
0
0
1
1
1
0
0
10dB
1
0
1
12dB
1
1
0
14dB
1
1
1
8dB
Mode
Treble
Boost
/Cut
0
MSB
D7
Boost
0
Cut
1
0
D4
LSB
D3
6dB
D7
0
Treble Boost Cut
D6
D5
D4
0
0
0
D3
D2
Treble gain
D0
0
LSB
D1
D0
0
: Initial condition
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TSZ22111・15・001
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TSZ02201-0V2V0E100030-1-2
2012.10.05 Rev.001
Datasheet
BD3490FV
Select address 78(hex)
Gain
MSB
D7
Surround Gain
D3
D2
D1
D0
OFF
0
0
0
0
Low
0
1
0
1
Middle
1
0
1
0
High
1
1
1
1
0
0
0
1
0
0
1
0
0
0
1
1
0
1
0
0
0
1
1
0
0
1
1
1
1
0
0
0
1
0
0
1
1
0
1
1
1
1
0
0
1
1
0
1
1
1
1
0
D2
D1
Surround
SW
D6
0
D5
D4
LSB
0
0
Prohibition
Mode
MSB
D7
(A)=ON, (B)=OFF
0
(A)=OFF, (B)=ON
1
Surround SW
D6
D5
D4
0
0
0
D3
LSB
D0
Surround Gain
: 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
Rise time of VCC
VCC voltage of release
power on reset
Unit
Min.
Typ.
Max.
Trise
20
－
－
usec
Vpor
－
3.0
－
V
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TSZ22111・15・001
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Condition
VCC rise time from 0V to 3V
TSZ02201-0V2V0E100030-1-2
2012.10.05 Rev.001
Datasheet
BD3490FV
●Volume attenuation of the details
ATT(dB)
0
-1
-2
-3
-4
-5
-6
-7
-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
-33
-34
-35
-36
-37
-38
-39
-40
-41
-42
-43
-44
-45
D7
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
1
1
1
1
1
1
1
1
1
1
1
1
1
D6
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
D5
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
1
1
1
1
1
1
1
1
1
1
1
1
1
D4
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
0
0
0
0
0
D3
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
0
0
0
1
1
1
1
1
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
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
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
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
ATT(dB)
D0
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
1
0
1
0
1
0
1
0
1
0
1
0
1
-46
-47
-48
-49
-50
-51
-52
-53
-54
-55
-56
-57
-58
-59
-60
-61
-62
-63
-64
-65
-66
-67
-68
-69
-70
-71
-72
-73
-74
-75
-76
-77
-78
-79
-80
-81
-82
-83
-84
-85
-86
-87
Prohibiti
on
-∞
D7
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
1
1
1
1
1
1
1
1
1
1
D6
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
D5
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
D4
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
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
D3
1
1
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
0
0
0
1
D2
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
0
1
1
1
1
0
0
0
0
1
1
1
1
0
D1
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
1
0
0
1
1
0
0
1
1
0
D0
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
1
0
1
0
1
0
1
0
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
1
: Initial condition
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TSZ22111・15・001
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TSZ02201-0V2V0E100030-1-2
2012.10.05 Rev.001
Datasheet
BD3490FV
●Application Circuit Diagram
GND
FIL
SDA
OUT1
VCC
SCL
OUT2
22k
4.7μ
10μ
28
FIL
4.7k
0.0047μ
27
26
SDA
GND
24
25
I C BUS LOGIC
VCC/2
VCC
SCL
2
4.7μ
0.1μ
10μ
4.7k
0.1μ
0.1μ
0.1μ
23
OUT1
22
21
SB1
20
SR
SB2
19
OUT2
18
BCB1
17
0.1μ
16
BCA1
BCA2
15
BCB2
VCC
・ Bass
･Gain=± 14dB/2dB step
Treble／ Bass
Surround
・ Treble
･Gain=± 14dB/2dB step
・ Volum e
･0dB~ -87dB/1dB step, -∞ dB, Independent control
・ Input Gain
･0~+8dB/2dB step 12, 16, 20dB
・ Surround
･Gain=OFF, Low, Middle, High
Volum e
Volum e
Input Gain
Input Selector
50k
A1
1
50k
A2
2
1μ
A1
50k
B1
A2
1μ
B1
50k
C1
B2
4
3
1μ
50k
5
1μ
B2
50k
C2
6
1μ
C1
50k
D1
C2
D2
1μ
D1
SEL2
9
8
7
1μ
50k
1μ
SEL1
10
VOL1
VOL2
12
11
2.2μ
TC2
13
2.2μ
0.0047μ
TC1
14
0.0047μ
D2
Figure 14. Application Circuit Diagram
UNIT
RESISTANCE: Ω
CAPACITANCE: F
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.
2
④Lines of SCL and SDA of I C 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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2012.10.05 Rev.001
Datasheet
BD3490FV
●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-B28
Power Dissipation Pd（W）
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)
1.063W
1.0
θja = 117.6℃/W
0.5
0.0
0
25
50
75
85
100
125
150
Ambient Temperature Ta（℃）
Fig.15 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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Datasheet
BD3490FV
●Terminal Equivalent Circuit and Description
Terminal
Terminal
Terminal
No.
name
voltage
1
A1
2
A2
3
B1
4
B2
5
C1
6
C2
7
D1
8
D2
9
SEL2
10
SEL1
19
OUT2
23
OUT1
4.5
Equivalent Circuit
Vcc
Terminal Description
A terminal for stereo signal input.
Input impedance = 50kΩ(typ).
50KΩ
GND
4.5
Vcc
A terminal for output.
GND
11
VOL1
12
VOL2
4.5
Vcc
A terminal for volume input.
Input impedance = 50kΩ(typ).
Total
50KΩ
GND
13
TC2
14
TC1
15
BCB2
18
BCB1
4.5
Vcc
TC1,TC2 : A terminal for treble filter.
About resistance, please reference P21,
Figure 20 and Table 4.
BCB1,BCB2 : A terminal for bass filter.
About resistance, please reference P20,
Figure 18 and Table 3.
GND
16
BCA2
17
BCA1
4.5
Vcc
A terminal for bass filter.
GND
24
VCC
Power supply terminal.
8.5
The figure in the pin explanation, terminal voltage and input/output equivalent circuit is reference value, it doesn’t guarantee the value.
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TSZ02201-0V2V0E100030-1-2
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Datasheet
BD3490FV
Terminal
No.
Terminal
name
Terminal
voltage
20
SB2
4.5
22
SB1
Equivalent Circuit
Terminal Description
Vcc
A terminal for Bass boost.
About resistance, please reference P22,
Figure 22 and Table 5.
GND
21
SR
4.5
Vcc
A terminal for surround.
About resistance, please reference P22,
Figure 22 and Table 5.
GND
25
SCL
－
A terminal for clock input of
I2C BUS communication.
Vcc
1.65V
GND
26
SDA
－
A terminal for data input of
I2C BUS communication.
Vcc
1.65V
GND
27
GND
28
FIL
Analog ground terminal.
0
4.5
Vcc
1/2 VCC terminal.
Voltage for reference bias of analog
signal system.
The simple precharge circuit and simple
discharge circuit for an external capacitor
are built in.
50KΩ
50KΩ
GND
The figure in the pin explanation, terminal voltage and input/output equivalent circuit is reference value, it doesn’t guarantee the value.
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TSZ02201-0V2V0E100030-1-2
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Datasheet
BD3490FV
●Cautions on use
1. Absolute Maximum Ratings: Impressed Voltage
When it impressed the voltage on VCC more than the absolute maximum rating voltage, circuit currents increase
rapidly, and there is absolutely a case to reach characteristic deterioration and destruction of a device. In particular in
a serge examination of a set, when it is expected the impressing serge at VCC terminal (24pin), please do not
impress the large and over the absolute maximum rating voltage (including a operating voltage + serge ingredient
(around 14V)).
2. About input signal
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
A (f)
〔Ω
SSH
f〔Hz〕
INPUT
A(f) =
(2πfCR
IN )
1 + (2πfCR
2
IN)
2
Figure 16. Input short circuit
2) About the input selector 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 10[kΩ](TYP)
Terminal No.
Terminal name
Terminal No.
Terminal name
9
SEL2
19
OUT2
10
SEL1
23
OUT1
VCC=9.0V
THD+n=1%
BW=400～30kHz
Figure 17. Output load characteristic. Reference Vcc=9.0V
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TSZ02201-0V2V0E100030-1-2
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Datasheet
BD3490FV
4.About the voice input terminal
When a terminal is made open, the inside resistance of the terminal is 50kΩ. Therefore, it sometimes causes a
trouble by the plunge noise from the outside. When there is a voice input terminal which isn't used, please connect it
to GND by using the capacitor, or, set up input selector by the microcomputer so that the input terminal which isn't
used may not be chosen.
5. Constant set up of bass filter
Bass Boost
Bass Cut
IN
IN
OUT
R2
R3
R2
BCB1 (18pin)
BCB2 (15pin)
BCA1 (17pin)
BCA2 (16pin)
C1
OUT
R3
BCB1 (18pin)
BCB2 (15pin)
BCA1 (17pin)
BCA2 (16pin)
C2
R1
C1
C2
R1
Figure 18. Bass filter
fo =
1
[Hz]
2π R1(R2 + R3)･C1･C2
Q=
R1(R2 + R3)･C1･C2
R1(C1 + C2) + R2C1
R2 + R3 C2
+
+1
C1 [dB]
BOOST GAIN = 20log R1
R2 C2
+
+1
R1 C1
R2 C2
+
+1
CUT GAIN = 20log R1 C1
[dB]
R2 + R3 C2
+
+1
R1
C1
Table 3.
Standard value of R3, R4(reference)
Gain (dB)
Resistance(kΩ)
※TYP.
Bass
Boost/Cut gain
Boost
R2
R3
±0dB
53.5
0
±2dB
40.9
12.6
±4dB
30.5
23.0
±6dB
22.3
31.2
±8dB
15.8
37.7
±10dB
10.6
42.9
±12dB
6.5
47.0
±14dB
3.2
50.3
fo
f(Hz)
Cut
Figure 19. Bass frequency characteristics
Actual boost/cut amount may be
dispositioned somewhat.
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Datasheet
BD3490FV
6. Constant set up of treble filter
Treble Boost
Treble Cut
IN
IN
OUT
R1
R1
R2
R2
R1
R2
TC1(14pin)
TC2(13pin)
OUT
TC1(14pin)
TC2(13pin)
C
C
Figure 20. Treble filter
fc =
1
[Hz]
2πR2C
BOOST GAIN = 20log
R1 + R2 + ZC
[dB]
R2 + ZC
CUT GAIN = 20log
R2 + ZC
[dB]
R1 + R2 + ZC
Table 4.
Standard value of R1, R2(reference)
Gain(dB)
3dB
Resistance(kΩ)
※TYP.
Treble
Boost
ｆc
f(Hz)
Cut
Boost/Cut gain
R1
R2
±0dB
0
29.1
±2dB
6.1
23.0
±4dB
10.9
18.2
±6dB
14.8
14.3
±8dB
17.9
11.2
±10dB
20.5
8.6
±12dB
22.6
6.5
±14dB
24.4
4.7
3dB
Figure 21. Treble frequency characteristics
Actual boost/cut amount may be
dispositioned somewhat.
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TSZ02201-0V2V0E100030-1-2
2012.10.05 Rev.001
Datasheet
BD3490FV
7.The use example of Bass Boost
7-1.The application circuit example of Bass Boost
OUT1
OUT2
RB
4.7μF
C1
5.6k
C2
0.22μF
0.1μF
0.1μF
22
23
Table 5.
Standard value of R1, R2 (reference)
Surround
R1[kΩ]
R2[kΩ]
Gain
RB
5.6k
C2
21
4.7μF
C1
0.22μF
20
19
1.4k
R1
R2
2.4k
34.1k
(B)
R2
R1
(A)
OFF
0
84.5
Low
44.8
39.7
Middle
70.0
14.5
High
84.2
0.3
Surround SW : (A)=ON
Figure 22. The application circuit example of Bass Boost
7-2. The computation formula and the representative characteristic of Bass Boost Gain
(fo=50Hz, Q=1.8(Surround Gain=High))
20
R1 + R2 C1
+
+1
C2
Gain = 20log R B
[dB ]
R2 C1
+
+1
RB C2
fo =
1
2π R B (R 1 + R 2 ) ⋅ C 1 ⋅ C 2
High
Gain [dB]
15
Middle
10
Low
5
[Hz ]
OFF
0
10
Q=
R B (R 1 + R 2 ) ⋅ C 1 ⋅ C 2
R B (C 1 + C 2 ) + R 2 ⋅ C 2
100
1k
10k
100k
Frequency [Hz]
Figure 23. The representative characteristic
of Bass Boost
20
①
④
②
③
7-3. The representative characteristic in fixed number change
Table 6. The fixed number example (*1)
No.
①
②
③
④
The specification
fo=60Hz,Q=1.8,Gain=16.8dB
fo=72Hz,Q=1.7,Gain=15.0dB
fo=79Hz,Q=1.9,Gain=16.2dB
fo=89Hz,Q=1.8,Gain=16.9dB
C1
[μF]
0.15
0.15
0.15
0.1
C2
[μF]
0.1
0.068
0.068
0.068
RB
[kΩ]
5.6
5.6
4.7
5.6
Gain [dB]
15
10
5
0
10
100
1k
Frequency [Hz]
(*1): Surround Gain=High
Figure 24. The representative characteristic
in fixed number change of Bass Boost
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8.The use example of Bass Boost & Surround
8-1. The application circuit example of Bass Boost & Surround
In this application circuit example, it isn't possible to do the use only of Surround. Also, Surround Gain depends on
the setting value of Bass Boost Gain.
OUT1
OUT2
4.7μF
C1
0.22μ
RB
3.3k
C2
CSUR
RS
0.1μ 12k
23
RS
12k 0.1μ
0.022μ
22
21
RB
3.3k
C2
4.7μF
C1
0.22μ
20
19
1.4k
R1
R2
2.4k
R2
34.1k
(B)
About the standard value
(The reference value ) of R1, R2,
Please refer to Table5
R1
(A)
Surround SW : (B)=ON
Figure 25. The application circuit example of Bass Boost & Surround
8-2. The computation formula and the representative characteristic Bass Boost Gain (Surround SW : (A)=ON)
R1 + R2 + RS C1
+
+1
RB
C2
[dB ]
Gain = 20log
R2 + RS C1
+
+1
RB
C2
fo =
High
Middle
10
Gain [dB]
1
2π R B (R 1 + R 2 + R S ) ⋅ C 1 ⋅ C 2
15
[Hz ]
Low
5
OFF
0
R B (R 1 + R 2 + R S ) ⋅ C 1 ⋅ C 2
Q=
R B (C 1 + C 2 ) + C 2 (R 2 + R S )
10
100
1k
10k
100k
Frequency [Hz]
Figure 26. Bass Boost (Surround SW : (A)=ON)の代表特性
8-3. The representative characteristic of Surround Gain (Surround SW : (B)=ON)
In this application circuit example, it isn't possible to do the use only of Surround. Also, Surround Gain depends on
the setting value of Bass Boost Gain.
15
High
Middle
Gain [dB]
10
Low
5
OFF
0
10
100
1k
10k
100k
Frequency [Hz]
Figure 27. The representative characteristic of Surround Gain (Surround SW : (B)=ON)
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9.The use example easy Surround
9. The application circuit example of easy Surround
About the standard value
(The reference value ) of R1, R2,
Please refer to Table5
OUT1
OUT2
15
4.7μF
4.7μF
High
10
OPEN
22
21
20
Middle
Gain [dB]
23
19
1.4k
Low
5
R1
R2
2.4k
34.1k
(B)
R2
R1
OFF
(A)
Surround SW : (A)=ON
0
10
100
1k
10k
100k
Frequency [Hz]
Figure 28. The application circuit example
of easy Surround
Figure 29. The representative characteristic
Of easy Surround
10.The use example Surround
10-1. The application circuit example of Surround
OUT1
OUT2
CSUR
0.0047μF
RSUR
22k
4.7μF
23
22
4.7μF
21
20
About the standard value
(The reference value ) of R1, R2,
Please refer to Table5
19
1.4k
R1
R2
2.4k
34.1k
(B)
R2
R1
(A)
Surround SW : (A)=ON
Figure 30. The application circuit example of Surround
10-2. The representative characteristic
15
High
10
Gain [dB]
Middle
Low
5
OFF
0
10
100
1k
10k
100k
Frequency [Hz]
Figure 31. The representative characteristic of Surround
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11.The use example Output Gain
11-1. The application circuit example of Output Gain
OUT1
OUT2
1μF
4.7μF
1μF
4.7μF
ROUT
ROUT
23
18k
22
21
18k
20
19
1.4k
R1
R2
2.4k
R2
34.1k
(B)
R1
About the standard value
(The reference value) of R1, R2,
Please refer to Table5
(A)
Surround SW : (A)=ON
Figure 32. The application circuit example of Output Gain
11-2. The computation formula and the representative characteristic Output Gain
Gain = 20log
R 1 + R 2 + R OUT
[dB ]
R 2 + R OUT
20
High
15
Gain [dB]
Middle
10
Low
5
OFF
0
10
100
1k
10k
100k
Frequency [Hz]
Figure 33. The representative characteristic of Output Gain
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12. The use example easy 3band
12-1. The application circuit example of easy 3band
・Easy 3 band can be composed using Bass Boost, Bass, Treble.
・Use Bass Boost in the Bass band, use Bass in the Middle band and use Treble just as it is as the Treble band.
・The Middle band, the Treble band are Gain=±14dB/2dB step but the Bass band becomes 4 step changing by
Gain=OFF/Low/Middle/High.
・At the addition function unused time, it is Surround Gain=OFF, Surround SW : Use in (A)=ON.
・Surround SW : Be careful because it damages output (23pin, 19pin) short-circuiting next, a characteristic when
having made (B)=ON.
OUT1
OUT2
2.7k
6.3k
0.1μ
4.7μ
6.3k
0.1μ
0.22μ
23
4.7μ
0.01μ
0.22μ
22
OUT1
21
SB1
SR
20
SB2
18
19
OUT2
2.7k
0.033μ
0.033μ
17
BCA1
BCB1
0.01μ
16
15
BCA2
BCB2
Treble／Bass
Surround
Surround SW : (A)=ON
Volume
SEL2
9
SEL1
Volume
VOL1
11
10
VOL2
12
2.2μ
2.2μ
Figure 34. The application circuit example
TC2
13
TC1
14
0.0022μ
0.0022μ
of easy 3band
6-2. The representative characteristic of easy 3band
15
10
Gain [dB]
5
0
-5
-10
-15
10
100
1k
10k
100k
Frequency [Hz]
Figure 35. The representative characteristic of easy 3band
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13.The application circuit example at the addition function unused time
・At the addition function unused time, it is Surround Gain=OFF, Surround SW : Use in (A)=ON.
・Surround SW : Be careful because it damages output (23pin, 19pin) short-circuiting next, a characteristic when
having made (B)=ON.
OUT1
OUT2
4.7μF
4.7μF
23
22
21
20
About the standard value
(The reference value ) of R1, R2,
Please refer to Table5
19
1.4k
R1
R2
2.4k
34.1k
(B)
R2
R1
(A)
Surround SW : (A)=ON
Figure 36. The application circuit example at the addition function unused time
14. The use example of INPUT SHORT function
・The INPUT SHORT function makes input impedance RIN small in the switch control and
it charges rapidly in external coupling capacitance.
・The DC bias voltage of the input terminal can be rapidly changed to regular condition (1/2VCC)
in transmitting I2C BUS direction immediately after power start-up and working this function.
・Always use INPUT SHORT function in the signal less condition and give it.
Input Selector
BIAS
A1
B1
５
C1
50k
Charge
３
50k
Charge
１
50k
Charge
Charge
50k
７
D1
Figure 37. About INPUT SHORT mode（The illustration only of 1ch）
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15. The use example The microphone input
・Because the input impedance of VOL1(11pin) and VOL2(12pin) is constant(50kohm(TYP)) even if it changes the
setting attenuation quantity of VOLUME, the outside sound signal can be added to this terminal. It is possible to
use as the microphone input terminal.
・Because it is a resistance addition to the VOL1 and VOL2 terminal, the signal level of this terminal (VOL1, VOL2) is
decided by the addition quantity and works VOLUME to the signal level.
VOLUME
Zin
SEL2
SEL1
9
VOLUME
Zin
VOL1
10
VOL2
11
12
R1
R1
2.2μ
2.2μ
R2
*Rin=50kΩ(TYP.) constant
*Make R2 bigger sufficiently than the
output-impedance of the outside sound signal.
* When making R1, R2 big, it becomes the
cause to aggravate output noise voltage.
R2
2.2μ
2.2μ
The outside sound signal
Figure 38. The application circuit example in microphone input use
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.
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BD3490FV
●Ordering Information
B
D
3
4
9
F
0
V
E2
Package
FV: SSOP-B28
Part Number
Packaging and forming specification
E2: Embossed tape and reel
(SSOP-B28)
●Physical Dimension Tape and Reel Information
SSOP-B28
<Tape and Reel information>
10 ± 0.2
(MAX 10.35 include BURR)
15
Embossed carrier tape
Quantity
2000pcs
0.3Min.
1
E2
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
)
14
0.15 ± 0.1
0.1
1.15 ± 0.1
Tape
Direction
of feed
5.6 ± 0.2
7.6 ± 0.3
28
0.1
0.65
0.22 ± 0.1
1pin
(Unit : mm)
Reel
Direction of feed
∗ Order quantity needs to be multiple of the minimum quantity.
●Marking Diagram(s)(TOP VIEW)
SSOP-B28(TOP VIEW)
Part Number Marking
B D 3 4 9 0 F V
LOT Number
1PIN MARK
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BD3490FV
●Revision history
Date
Revision
5.Oct.2012
001
Changes
New Release
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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
(Note 1)
, transport
intend to use our Products in devices requiring extremely high reliability (such as medical equipment
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
CLASSⅡb
CLASSⅢ
CLASSⅢ
CLASSⅣ
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
safety measures including but not limited to fail-safe design against the physical injury, damage to any property, which
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
special or extraordinary environments or conditions. If you intend to use our Products under any special or
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
© 2014 ROHM Co., Ltd. All rights reserved.
Rev.002
Datasheet
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
© 2014 ROHM Co., Ltd. All rights reserved.
Rev.002
Datasheet
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 n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent 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 an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or
concerning such information.
Notice – WE
© 2014 ROHM Co., Ltd. All rights reserved.
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