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Sound Processors for Home Theater Systems
5.1ch
Sound Processors
BD3813KS,BD3815KS
●Description
The BD3813KS and BD3815KS sound processors integrate a gain amp and volume/bass/treble controls on a single chip,
making them optimally suited for use in audio applications, such as AV receivers, home theater systems and mini-component
systems. Used in combination with the BD3812F, a 2ch volume IC, the units enable 6.1ch and 7.1ch operation.
In addition, utilization of a BiCMOS process ensures a wide dynamic range (129dB).
●Features
1) Wide dynamic range: 129dB (Tone Bypass, VOL=MUTE, IHF-A)
2) Independent 6 channels for M aster Volume (0 to -95 dB, MUTE 1dB/Step)
Implementation of a resistance ladder type circuit reduces residual no ise and shock sounds during s witching.
3) Low current consumption achieved through utilization of BiCMOS processes
4) Maximum output voltage: 4.2Vrms (Vcc=7V, VEE=-7V, RL=10kΩ)
5) Built-in 5ch independent input gain amplif ier - useful for amplifying input signals
6) Built-in 2ch output port
7) 2-wire serial control (for both 3. 3V and 5V)
●Applications
AV receivers, home theater systems and mini-component systems
●Line up matrix
Parameter BD3813KS BD3815KS
Mode Selector Yes Yes
Input Gain 0 6 12dB 0 6 18dB
Volume 0 to -95dB 1dB/Step 0 to -95dB 1dB/Step
Bass, T reble 14dB 2dB/Step 14dB 2dB/Step
Number of Ports 2 2
Package SQFP56 SQFP56
No.10081EAT04
Technical Note
2/17
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BD3813KS,BD3815KS
●Absolute maximum ratings (Ta=25℃)
Parameter Symbol Ratings Unit
Power Supply Voltage VCC 7.5
*1 V
VEE -7.5
Input Signal Voltage VIN VCC+0.3 to VEE-0.3 V
Power Dissipation Pd 1000 *2 mW
Operating Temperature Rang e Topr 20 to 75 °C
S torage Temperature Range Tastg 55 to 125 °C
*1 Applying voltage only to the VCC side, even if within the specified power supply voltage range, may cause excessive
current to flow, resulting in permanent damage to the IC. Therefore, when starting up the power supplies, VEE and VCC
should either be powered ON simultaneously, or VEE first, followed by VCC.
*2 Please note the derating characteristics above Ta=25℃: 10mW/℃ (Mounted on a 70mmx70mmx1.6mm sized board).
●Operating conditions
(Normal function at Ta=25℃)
Parameter Symbol
Ratings Unit
Min. Typ. Max.
Operating Supply Voltage VCC 5 7 7.3
V
VEE -7.3 -7 -5
Technical Note
3/17
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BD3813KS,BD3815KS
●Electrical Characteristics
Ta=25℃, VCC=7V, VEE=-7V, f=1kHz, VIN=1Vrms, RL=10kΩ, Rg=600Ω
Input Gain=0dB, Master Volume=0dB, Bass bnd Treble=0dB, Unless otherwise noted.
Parameter Symbol
Limits Unit Conditions
Min. Typ. Max.
Total Output
Circuit Current VCC IQ ― 10 20 mA No signal
VEE -20 -10 ―
Output Voltage Gain 1 Gv1 -2 0 2 dB Measure : Pin31, 29, 27, 25, 23, 21
Output Voltage Gain 2 Gv2 -2 0 2 dB Measure : Pin19
Total Harmonic Distortion
ratio 1 THD1 ― 0.004 0.05 % Measure : Pin31, 29, 27, 25, 23, 21
BW=400～30kHz
Total Harmonic Distortion
ratio 2 THD2 ― 0.004 0.05 % Measure : Pin19
BW=400～30kHz
Maximum Output Voltage 1 Vomax1 3.4 4.2 ― Vrms Measure : Pin31, 29, 27, 25, 23, 21
THD=1%
Maximum Output Voltage 2 Vomax2 3.4 4.2 ― Vrms Measure : Pin19
THD=1%
Output Noise Voltage 1 Vno1 ― 2.0 12 µVrms Measure : Pin 31,29
Rg=0Ω, Tone: ON, BW=IHF-A
― 1.5 8.0 µVrms Measure : Pin 31,29
Rg=0Ω, Tone: By-pass, BW=IHF-A
Output Noise Voltage 2 Vno2 ― 1.5 8.0 µVrms Measure : Pin 27,25,23,21
Rg=0Ω, BW=IHF-A
Output Noise Voltage 3 Vno3 ― 1.0 5.0 µVrms Measure : Pin 19
Rg=0Ω, BW=IHF-A
Crosstalk between Channels
RchLch CTCRL ― -95 -80 dB
Measure : Pin29(OUTF L)
Rg=0Ω, BW=IHF-A
Reference : Pin31(OUTFR)=1Vrms
Crosstalk between Channels
LchRch CTCLR ― -95 -80 dB
Measure : Pin31(OUTF R)
Rg=0Ω, BW=IHF-A
Reference : Pin29(OUTFL)=1Vrms
Crosstalk between Selectors
DVD CTSA ― -95 -80 dB
Measure : Pin 31,29,27,25,
23,21,19
Rg=0Ω, BW=IHF-A
Crosstalk between Selectors
D/A CTSB ― -95 -80 dB
Measure : Pin 31,29,27,25,
23,21,19
Rg=0Ω, BW=IHF-A
Technical Note
4/17
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BD3813KS,BD3815KS
Parameter Symbol
Limits Unit Conditions
Min. Typ. Max.
Volume Output
Volume Control Range GVR -98 -95 -92 dB Measure : Pin31, 29, 27, 25, 23, 21
Vin=3Vrms
Volume Setting Error 1 VE1 -2 0 2 dB 0 to –53dB
Measure : Pin31, 29, 27, 25, 23, 21
Vin=3Vrms
Volume Setting Error 2 VE2 -3 0 3 dB -54 to –95dB
Measure : Pin31, 29, 27, 25, 23, 21
Vin=3Vrms
Channel Balance VCB -0.5 0 0.5 dB Measure : Pin31, 29, 27, 25, 23, 21
Vin=3Vrms, Volume=0dB
Maximum Attenuation Vmin ― -115 -105 dB BW=IHF-A
Measure : Pin31, 29, 27, 25, 23, 21
Vin=3Vrms
Input Gain
Input Gain Control Range
(BD3813KS) GIG 10 12 14 dB
Measure : Pin31, 29, 27, 25, 23, 21, 19
Vin=0.4Vrms
Input Gain Control Range
(BD3815KS) 16 18 20 dB
Measure : Pin31, 29, 27, 25, 23, 21, 19
Vin=0.4Vrms
Input Gain Setting Error
(BD3813KS) GIE -2 0 2 dB
Measure : Pin31, 29, 27, 25, 23, 21, 19
Vin=0.4Vrms
Input Gain Setting Error
(BD3815KS) -2 0 2 dB
Measure : Pin31, 29, 27, 25, 23, 21, 19
Vin=0.4Vrms
Treble
Treble Maximum Boost Gain GTB 12 14 16 dB Measure : Pin 31, 29
f=15kHz, VIN=0.4Vrms
Treble Maximum Cut Gain GTC -16 -14 -12 dB Measure : Pin 31, 29
f=15kHz, VIN=0.4Vrms
Treble Step Resolution TR ― 2 ― dB
Measure : Pin 31, 29
f=15kHz, VIN=0.4Vrms
Treble Gain Setting Error TE -2 0 2 dB Measure : Pin 31, 29
f=15kHz, VIN=0.4Vrms
Bass
Bass Maximum Boost Gain GBB 12 14 16 dB Measure : Pin 31, 29
f=100Hz, Vi=0.4Vrms
Bass Maximum Cut Gain GBC -16 -14 -12 dB Measure : Pin 31, 29
f=100Hz, VIN=0.4Vrms
Bass Step Resolution BR ― 2 ― dB
Measure : Pin 31, 29
f=100Hz, VIN=0.4Vrms
Bass Gain Setting Error BE -2 0 2 dB Measure : Pin 31, 29
f=100Hz, VIN=0.4Vrms
Port
Port H Output PH 4.5 4.9 ― V
Measure : Pin11,12
VDD=5V, RL=47kΩ
* This product is not designed to be resistant against radiation
Technical Note
5/17
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BD3813KS,BD3815KS
●Timing Chart
1) Signal Timing Conditions
・Data is read on the rising edge of the clock.
・Latch is read on the falling edge of the clock.
・The latch signal must terminate with the Low state.
*To avoid malfunction, the clock and data signals must terminate with the Low state.
Fig.1
Parameter Symbol
Limits Unit
Min. Typ. Max.
Minimum Clock Width twc 2.0 µs
Minimum Data Width twd 2.0 µs
Minimum Latch Width twl 2.0 µs
Low Hold Width twh 2.0 µs
Data Set-up Time (DataClock) tsd 1.0 µs
Data Hold Time ( Clock Data ) thd 1.0 µs
Latch Set-up Time ( Clock Latch) tsl 1.0 µs
Latch Hold Time ( Data Latch ) thl 1.0 µs
Latch Low Set-up Time ts 1.0 µs
Latch Low Hold Time th 1.0 µs
2) Control Signal Voltage Conditions
Parameter Condition Limits Unit
Min. Typ. Max.(≤Vcc)
“H” Input Voltage Vcc=57.3V
VEE=-5-7.3V
2.2 5.5 V
“L” Input Voltage 0 1.0 V
CL
（Clock）
DA
Data
Latch
thd thdth ts tsl thl tsd
twc
twh
twd twl
Data Data
Latch
90% 90% 90% 90%
10% 10% 10%
90% 90% 90% 90% 90%
10% 10% 10%
twc
Terminate
with Low
Technical Note
6/17
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BD3813KS,BD3815KS
3) Control Data Format - Basic Configuration
Input direction
MSB LSB
Data D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Data Select Address
・Control Data Formats
Input direction Select Address
Data
1
D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Input Gain
FR/FL Input Gain
SR/SL Input Gain
C Input Gain
SW Input Gain
SB SW1
0:A
1:B
SW2
0:A
1:B
SW3
0:A
1:B 0 0 0 0
Data
2
D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Treble Bass
TON
E Port A
0:L
1:H
Port B
0:L
1:H * * 1 0 0 0
Data
3
D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Master Volume FRch Master Volume FLch 0 0 1
Data
4
D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Master Volume SRch Master Volume SLch 0 1 0
Data
5
D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Master Volume Cch Master Volume SWch 0 1 1
Changing the Select Address settings allows selection of four different control formats.
For Select Address, values except those shown above must not be specified.
The address data must be initialized after ever y power ON.
* Indicates 0 or 1.
(Example)
Input direction
MSB LSB MSB LSB MSB LSB MSB LSB MSB LSB
Data1 L Data 2 L Data 3 L Data 4 L Data 5 L
“L” means latch.
After power ON, only the desired data can be set for the second and subsequent times,.
(Example) When changing the bass,
Input direction MSB LSB
Data 2 L
“L” means latch.
Technical Note
7/17
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BD3813KS,BD3815KS
●Applica tion Circ uit
1) BD3813KS / BD3815KS
Units
Resistor: Ω
Capacitor: F
Fig. 2
DVD 6.1ch
B
INFRA
INFLA
INSRA
INSLA
INCA
INFRB
INFLB
INSWB
INSLB
INSRB
INCB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
26
25
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
INSWA
INSBB
A
DA CL
VEE
VCC
OUTSB
OUTC
OUTSL
OUTSR
OUTSW
OUTFL
OUTFR 4.7K
4.7K
4700p
4700p
10µ
LOGIC
TONE
47K
47K
47K
47K
47K
47KK
47K
47K
47K
47K
47K
47K
47K
47K
47K
47µ
47µ
D/A 6.1ch
INSBA 47K
VDD
SW1
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
SW2
SW3
10µ
10µ 10µ 10µ 10µ
0.1µ 0.1µ 0.1µ 0.1µ
Technical Note
8/17
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BD3813KS,BD3815KS
●Pin Description
Pin
No. Pin
Name Description Pin
No. Pin
Name Description
1 GND1 Ground pin 29 OUTFL Lch Output pin
2 GOUTSW Input Gain output for subwoofer pin 30 GND9 Ground pin
3 VINSW Volume Input for subwoofer pin 31 OUTFR Rch Output pin
4 GOUTSR Input Gain output for surround Rch pin 32 GND10 Ground p in
5 VINSR Volume Input for surround Rch pin 33 BNF2L Lch Bass filter pin 2
6 GOUTSL Input Gain output for surround Lch pin 34 BNF1L Lch Bass filter pin 1
7 VINSL Volume Input for surround Lch pin 35 BNF2R Rch Bass filter pin 2
8 GOUTC Input Gain output for center speaker pin 36 BNF1R Lch Bass filter pin 1
9 VINC Volume Input for center speaker pin 37 TNFL Lch Treble filter pin
10 GND2 Ground pin 38 TNFR Rch Treble filter pin
11 PORTA Output for port pin 39 VINFR Rch Volume input pin
12 PORTB Output for port pin 40 GOUTFR Rch Input gain output pin
13 DA Serial data, latch input pin 41 VINFL Lch Volume input pin
14 CL Serial cl ock input pin 42 GOUTFL Lch Input gain output pin
15 VDD Power supply for port pin 43 INFRA Input for Rch DVD pin
16 VEE (-) Power supply pin 44 INFLA Input for Lch DVD pin
17 GND3 Ground pin 45 INSWA Input for SWch DVD pin
18 VCC (+) Power supply pin 46 INSRA Input for SRch DVD pin
19 OUTSB Surround back output pin 47 INSLA Input for SLch DVD pin
20 GND4 Ground pin 48 INCA Input for Cch DVD pin
21 OUTC Center speaker output pin 49 INSBA Input for SBch DVD pin
22 GND5 Ground pin 50 INFRB Input for Rch DSP pin
23 OUTSL Output for surround Lch pin 51 INFLB Input for Lch DSP pin
24 GND6 Ground pin 52 INSWB Input for SWch DSP pin
25 OUTSR Output for surround Rch pin 53 INSRB Input for SRch DSP pin
26 GND7 Ground pin 54 INSLB Input for SLch DSP pin
27 OUTSW Subwoofer output pin 55 INCB Input for Cch DSP pin
28 GND8 Ground pin 56 INSBB Input for SBch DSP pin
Technical Note
9/17
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BD3813KS,BD3815KS
●Equivalent Circuits
Pin No. Pin Name Pin Voltage Equivalent Circuit Description
2
4
6
8
40
42
GOUTSW
GOUTSR
GOUTSL
GOUTC
GOUTFR
GOUTFL
0
VCC
VEE
Sound signal output pins from input gain
3
5
7
9
39
41
VINSW
VINSR
VINSL
VINC
VINFR
VINFL
0
VCC
VEE
Sound signal input pins to master volume,
Input Impedance: 20kΩ (typ.)
11
12
PORTA
PORTB
VC
C
VEE
VDD
Open drain output pins
13 DA
VCC
VEE
Serial data input pin
14 CL
VCC
VEE
Serial clock input pin
Technical Note
10/17
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BD3813KS,BD3815KS
Pin No. Pin Name Pin Voltage Equivalent Circ uit Description
19
21
23
25
27
29
31
OUTSB
OUTC
OUTSL
OUTSR
OUTSW
OUTFL
OUTFR
0
VCC
VEE
Sound signal output pins
33
35
BNF2L
BNF2R 0
VCC
VEE
Bass frequency characteristic/gain setting
pins
34
36
BNF1L
BNF1R 0
VCC
VEE
Bass frequency characteristic/gain setting
pins
37
38
TNFL
TNFR 0
VCC
VEE
Treble frequen cy characteristic/gain
setting pins
43
44
45
46
47
48
49
50
51
52
53
54
55
56
INFRA
INFLA
INSWA
INSRA
INSLA
INCA
INSBA
INFRB
INFLB
INSWB
INSRB
INSLB
INCB
INSBB
0
VCC
VEE
Sound signal input pins;
Input impedances determined by external
resistances
Technical Note
11/17
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BD3813KS,BD3815KS
○Switch Description
Output
Input
(SW1A）
SW2,3B
(Default） SW2A
SW3B SW2B
SW3A
FR FR FR FR
FL FL FL FL
SW SW SW SW
SR SR FR SR
SL SL FL SL
C C C C
SB SB SB C
SW1 A: Select input line A
B: Select input line B
SW2 A: Output the signals of the FR and FL inputs onto the Surround Outputs (SR, SL)
Used when the source is stereo.
B: Output the signals of the SR and SL inputs onto the Surr ound Outputs (SR, SL)
Used when the source is 5.1ch or 6.1ch.
SW3 A: Output the C input signal onto SB output
Used when the source is 5.1ch with the 6.1ch speaker system installed.
B: Output the SB input signal onto the SB output
Used when the source is 6.1ch with the 6.1ch speaker system installed.
Technical Note
12/17
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BD3813KS,BD3815KS
●Setting constants for tone control filters
1) T reble filter
fc=1/2(R2)C (Hz)
G=20log(R1+R2+Zc)/(R2+Zc) (dB)
Zc=1/jC (Ω)
Standard Valu es of R1, R2 (Reference)
Treble Boost Amount
Cut Amount
Resistance (kΩ)
Typ.
R1 R2
0dB 0 20
2dB 4.1 15.9
4dB 7.3 12.7
6dB 10.3 9.7
8dB 12.3 7.7
10dB 14.0 6.0
12dB 15.4 4.6
14dB 16.5 3.5
The actual boost/cut amounts may deviate from
the standard values to some degree.
G
ｆ
ｆc
G
3dB
G
3dB
Fig.4
R2
IN
Pin 37, 38
OUT
C
+
-
R1
Fig.3
Technical Note
13/17
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BD3813KS,BD3815KS
2) Bass Filter
Standard values of R2, R3 (Reference)
(R1=4.7kΩ, C1=C2=0.1F）
Boost Amount
Cut Amount
Resistance (kΩ)
Typ.
R2 R3
0dB 0 41.0
2dB 10.8 30.2
4dB 19.3 21.7
6dB 26.0 15.0
8dB 31.2 9.8
10dB 35.4 5.6
12dB 38.4
2.6
14dB 41.0
0
The actual boost/cut amounts may deviate from
the standard values in some degree.
Bass Filter Feature
To set the f0 and Q values of the Bass
characteristics, refer to the external components of
the Bass Filter shown in the upper-left figure.
G
ｆ
ｆo
G
G
Fig.6
Fig. 5
C1 C2
R3 R2
IN
R1
+
-
(Hz)
C1C2
+ R3
R2
R1
2π
1
f
0
=
when C1=C2
R1
G
=+2
20log
R2+R3
R1
R3
+2 (dB)
C1C2R2
Q=C1+C2
1
R1
Pin34, 36 Pin33, 35
Technical Note
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BD3813KS,BD3815KS
-10
-8
-6
-4
-2
0
2
4
6
8
10
10 100 1000 10000 100000
FREQUENCY (Hz)
GAI N (dB)
0.001
0.01
0.1
1
10
0.001 0.01 0.1 1 10
I N PU T VOLTAGE (Vrm s )
OU T PU T VOLT AGE (Vrm s )
-10
-8
-6
-4
-2
0
2
4
6
8
10
0246810
POW ER SUPPLY ( V)
CIRCUIT CURRENT (mA)
-20
-15
-10
-5
0
5
10
15
20
10 100 1000 10000 100000
FREQUENCY (Hz)
GAIN (dB)
0.0001
0.001
0.01
0.1
1
10
0.001 0.01 0.1 1 10
I N PU T VOLTAGE (Vrms )
THD+N (%)
-20
-15
-10
-5
0
5
10
15
20
10 100 1000 10000 100000
FREQUENCY (Hz)
GAIN (dB)
-20
-15
-10
-5
0
5
10
15
20
10 100 1000 10000 100000
FREQUENCY (Hz)
GAIN (dB)
0
1
2
3
4
5
6
110100
IMPEDANCE (kΩ)
POR T VOLT AGE (V)
-20
-15
-10
-5
0
5
10
15
20
10 100 1000 10000 100000
FREQUENCY (Hz)
GAIN (dB)
●Reference Data
Fig.7 Circuit Current - Power Supply
Fig.8 Voltage Gain - Frequency
Fig.9 Output Voltage - Input Voltage
VCC
VEE
+14dB +14dB
Fig.10 THD+N –Input Voltage
Fig.11 Bass Gain - Frequency Fig.12 Treble Gain - Frequency
Fig.13 Input Gain - Frequency
(BD3813KS) Fig.14 Input Gain - Frequency
(BD3815KS) Fig.15 Port H Voltage –
Load Resistance
-14
+14dB
2dB/step
-
14dB
-14+14dB
2dB/step
-14dB
18dB
0dB
6dB
12dB
0dB
6dB
Technical Note
15/17
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BD3813KS,BD3815KS
●Notes for use
(1) The numbers and data shown abov e are representative design values and are not guaranteed.
(2) Although the sample application circuits are guaranteed, further verification of the electrical characteristics are
recommended. When modifying external components before use, ensure that sufficient margins are in place by taking
into account variations in the external components themselves as well as the LSI regarding both static and transient
characteristics.
(3) Absolute maximum ratings
Operating or testing the IC over the maximum ratings may damage the part itself as well as peripheral components.
Therefore, please ensure that the specifications are never exceeded. In addition, implementation of fuses or other physical
safety measures is recommended.
(4) VEE potential
Ensure that the VEE pin voltage is at the lowest potential and that no other pin is at a lower voltage, including transient
phenomena.
(5) Thermal design
Implement thermal designs that take into account the power dissipation under actual operating cond itions.
(6) Shorts between pins and erroneous installation
Incorrect mounting may damage the IC. In addition, the presence of foreign particles between the pins, a pin and the
power supply, or a pin and GND may result in destruction.
(7) Operation in a strong magnetic field
Operation in a strong magnetic field may cause malfunction.
(8) Serial control
The wiring pattern of the CL and DA terminals should be routed so as not to cause interference with the analog signal
related lines.
(9) Power ON/OFF
(a) During power ON/OFF a shock sound will be generated. Therefore, use the MUT E function.
(b) When turning ON the power supplies, VEE and VCC should either be powered on simultaneously, or VEE first,
followed by VCC, since if VCC is started up first, an excessive current may pass VCC through to VEE.
(10) Function switching
For functions except the Master Volume, Treble and Bass controls, use of the MUTE function is recommended.
(11) Port power supply
The port power supply should be turned ON following VCC and VEE. If the port is not used, the port power supply must be
connected to VEE.
Technical Note
16/17
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BD3813KS,BD3815KS
0
200
400
600
800
1000
1200
0 25 50 75 100 125
Ta(℃)
Power Dissipation Pd （mW)
1000mW
●Thermal Derating Curve
Fig. 16
BD3813KS, BD3815KS
Board size: 70mm x 70mm x 1.6mm
Raw material: FR4 glass epoxy b oard (copper area less than 3%)
Technical Note
17/17
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BD3813KS,BD3815KS
●Ordering p art number
B D
3 8 1 3 K S -
Part No. Part No.
3813
3815
Package
KS: SQFP56 Packaging and forming specification
None :Tray
(Unit : mm)
SQFP56
0.15
0.65
42 29
28
15
14
1
43
56
10.0
±
0.2
12.4 ± 0.3
10.0
±
0.2
12.4 ± 0.3
0.15 ± 0.1
0.5
0.05
2.15 ± 0.1
0.3 ± 0.1
∗ Order quantity needs to be multiple of the minimum quantity.
<Tape and Reel information>
TrayContainer
Quantity
Direction of feed 1000pcs
Direction of product is fixed in a tray
1pin
Datasheet
Datasheet
Notice - GE Rev.002
© 2014 ROHM Co., Ltd. All rights reserved.
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 CLASSⅢ CLASSⅡb 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
Datasheet
Datasheet
Notice - GE Rev.002
© 2014 ROHM Co., Ltd. All rights reserved.
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.
DatasheetDatasheet
Notice – WE Rev.001
© 2014 ROHM Co., Ltd. All rights reserved.
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 any damages, expenses or losses incurred by you or third parties resulting from inaccur acy or errors of or
concerning such information.
