Rohm BD3823FV Ntsc-pal audio i/o interface for recording Datasheet

TECHNICAL NOTE
Video / Audio Interfaces for TV and DVD Recorders
NTSC-PAL Audio I/O
Interface for Recording
BD3823FV
ƔDescription
BD3823FV is a low-noise (3.2ҏμVrms), low distortion (0.0015%), 5ch selector, incorporating a resistor-ladder type
volume.
Because of a wide power supply voltage range (7V to 14.5V), BD3823FV can meet a wide input voltage (to 4.5 Vms), and high S/N
can be achieved. In addition, the built-in volume does not add any distortion ratio characteristics, even when the attenution is varied,
and is applicable for high-quality audio systems.
ƔFeatures
1) A resistor-ladder type volume circuit is with a low distortion ratio (0.0015% with volume set to –6dB) and low noise (3.2 ȝVrms with
volume set to -6dB).
2) By grouping sound input terminals with output terminals, the PCB layout is reduced.
3) Small package SSOP - B20 achieves good crosstalk characteristicss (-110 dB).
4) The use of Bi-CMOS process enables low current consumption and energy saving design.
Because of low current consumption, BD3823FV has the advantage in quality over the scaling down of the internal regulators and
heat controls.
ƔApplications
DVD recorders
ƔAbsolute maximum rating (Ta=25°C)
Parameter
Symbol
Limits
Unit
VCC
15.0
Applied Voltage
V
SCL, SDA
7.0
Input voltage
VIN
V
VCC+0.3̻GND-0.3
Power Dissipation
Pd
810 *1
mW
Operating Temperature
Topr
°C
-40䌾+85 *2
Storage Temperature
Tastg
°C
-55̻+150
*1 Reduced by 6.5 mW/qC at 25qC or higher.
Thermal resistance Tja = 154 (°C/W), when Rohm standard board is mounted.
Rohm standard board: Size: 70͙70͙1.6 (mm3)
Material: FR4 glass-epoxy substrate (copper foil area: not more than 3%).
*2 As long as voltage stays within operating voltage range, certain circuit operation is guaranteed in
the operating temperature range.
Allowable power loss conditions are related to temperature, to which care must be taken.
In addition though the standard value of its electrical characteristics cannot be guaranteed under
the conditions other than those specified, basic functions are maintained.
ƔOperating range (Basic operation at Ta=25ͨ)
Parameter
Symbol
Min.
Typ.
Max.
Unit
*3
Power supply voltage
VCC
7.0
12.0
14.5
V
*3 As long as temperature and operating voltage meet specifications
In addition, though the standard value of its electrical characteristics cannot be guaranteed under
the conditions other than those specified, basic functions are maintained.
Ver.B Oct.2005
!
ƔElectrical characteristics
Unless otherwise specified, Ta=25ͨ, VCC=12V, f=1kHz, Vin=1Vrms, Rg=600Ԉ, RL=10kԈ, Gain selector = 0dB, Volume = 0dB,
Input terminal = Front 1, Output terminal = Out 1
Limits
GENERAL
Parameter
VOLUME
Unit
Min.
Typ.
Max.
Conditions
Circuit Current upon no signal
IQ
-
2.5
10
mA
VIN=0Vrms
Voltage gain
GV
-1.5
0
1.5
КB
GV=20log(VOUT/VIN)
Maximum output voltage
VOM
3.0
3.6
-
Vrms
Channel balance
CB
-1.5
0
1.5
dB
CB = GV1-GV2
GV1:ch1Gain, GV2:ch2 Gain
Total harmonic distortion
THD
-
0.0015
0.05
%
VIN=2Vrms,Volume=-6dB
BW=400Hz-30KHz
Output noise voltage *
VNO
-
3.2
16
ȝVrms
Volume=-6dB
Rg = 0ȍ, BW=IHF-A
Residual output noise voltage *
VNOR
-
2
10
ȝVrms
Volume = -͡dB
Rg = 0ȍ, BW=IHF-A
Cross-talk between channels *
CTC
-
-110
-80
dB
Rg = 0ȍ
BW = IHF-A
Input impedance
RIN
77
110
143
kȍ
1pin-10pin terminal
Maximum input voltage
VIM
3.1
3.61)
-
Vrms
Cross-talk between selectors *
CTS
-
-110
-80
dB
VV
-32.5
-30.5
-28.5
dB
GV=20log(VOUT/VIN)
BW = IHF-A
Volume control range
GAIN SELECTOR
Symbol
VOM at THD(VOUT)=1%
BW=400Hz-30KHz̝
VIM at THD(VOUT)=1%
BW=400Hz-30KHz
1pin-10pin terminal
Rg = 0ȍ
BW = IHF-A
CTS=20log(VOUT/VIN)
Maximum attenuation *
GV MIN
-
-106
-85
dB
Volume = -͡dB
GV=20log(VOUT/VIN)
BW = IHF-A
Step resolution
GV STEP
-
0.5
-
dB
Volume=0̻-30.5dB
Attenuation set error
GV ERR
-1.5
0
1.5
dB
Volume=0̻-30.5dB
Maximum gain
G MAX
4.5
6
7.5
dB
Gain Selector=6dB
VIN=500mVrms
G=20log(VOUT/VIN)
Step resolution
G STEP
-
2
-
dB
From 2dB to 4dB
Gain set error
G ERR
-1.5
0
1.5
dB
ͰVP-9690A (average value detection, effective value display) filter by Matsushita Communication is used for * measurement.
ͰPhase between input/output is the same.
ͰThis IC is not designed to be radiation-resistant.
1)VIM=2.5Vrms(TYP) at VCC=9V̜THD(VOUT)=1%
VIN=4.2Vrms(TYP) at VCC=14V̜THD(VOUT)=1%
2/8
ƔTiming chart
Electrical specifications and timing of bus lines and I/O stages
㪪㪛㪘
㫋
㪙㪬㪝
㫋
㫋
㪣㪦㪮
㫋
㪩
㫋
㪝
㪟㪛㪒㪪㪫㪘
㫋
㪪㪧
㪪㪚㪣
㫋
㪧
㫋
㪟㪛㪒㪪㪫㪘
㫋
㪟㪛㪒㪛㪘㪫
㫋
㪟㪠㪞㪟
㪪㪬㪒㪛㪘㪫
㫋
㪪㪬㪒㪪㪫㪘
㫋
㪪㫉
㪪㪬㪒㪪㪫㪦
㪪
㪧
㪤㪙㪚㪍㪈㪈
Fig.1 Timing Definition on I2C BUS
2
Table 1 . Characteristics of the SDA and SCL BUS lines for I C BUS devices
Parameter
Symbol
High speed mode
I2C BUS
Min.
Max.
Unit
1
SCL clock frequency
fSCL
0
400
kHz
2
Bus free time between a STOP and START condition
tBUF
1.3
-
ȝs
3
Hold time (repeated) START condition. After this period, the first clock
pulse is generated
tHD;STA
0.6
-
ȝs
4
LOW period of the SCL clock
tLOW
1.3
-
ȝs
5
HIGH period of the SCL clock
tHIGH
0.6
-
ȝs
6
Set-up time for a repeated START condition
tSU;STA
0.6
-
ȝs
7
Data hold time
tHD;DAT
0*
-
ȝs
8
Data set-up time
tSU; DAT
100
-
ns
tR
20+Cb
300
ns
9
Rise time of both SDA and SCL signals
10
Fall time of both SDA and SCL signals
tF
20+Cb
300
ns
11
Set-up time for STOP condition
tSU;STO
0.6
-
ȝs
12
Capacitive load for each bus line
Cb
-
400
pF
The above numerical values all correspond to VIH min and VIL max levels (see Table 2).
*The input signals must internally provide at least 300 ns hold-time for SDA signals (at VIH min of SCL signals) in order to cross over
undefined region at the fall-end of SCL.
2
Table 2. Characteristics of the SDA and SCL I/O stages for I C BUS devices
High speed mode
Parameter
Symbol
13
Low-level input voltage : fixed input levels
14
Low-level input voltage : fixed input levels
15
Hysteresis of Schmitt trigger inputs: fixed input levels
16
Pulse width of spikes which must be suppressed by the input filter.
17
Low-level output voltage (open drain): at 3mA sink current
18
19
20
Output fall time from VIHmin. to VIHmax. with a bus capacitance from 10
pF to 400pF: with up to 3mA sink current at VOL1
Input current each I/O pin with an input voltage between 0.4V and 0.9
VCCmax.
Capacitance for each I/O pin
n/a = not applicable
3/8
I2C BUS
Min.
Max.
VIL
-0.5
Unit
1.0
V
VIH
2.3
-
ȝs
Vhys
n/a
n/a
V
tSP
0
50
ns
VOL1
0
0.4
V
tOF
20+0.1Cb
250
ns
Ii
-10
10
ȝA
Ci
-
10
pF
2
I C BUS FORMAT
MSB
LSB
MSB
LSB
MSB
LSB
S
Slave Address
A
Select Address
A
Data
1bit
8bit
S
1bit
8bit
1bit
8bit
A
P
1bit 1bit
= Start condition (Recognition of start bit)
Slave Address = Recognition of slave address. 7 bits in upper order are voluntary.
Least significant bit is “L” for writing.
A
= ACKNOWLEDGE bit (Recognition of acknowledgement)
Select Address ͛Selection of volume, etc.
Data
͛Data such as volume, etc.
P
= Stop condition (Recognition of stop bit)
I2C BUS Interface Protocol
1ͅBasic form
S
MSB
Slave Address
LSB
A
Select Address
MSB
LSB
A
Data
A
MSB
LSB
P
2ͅ Automatic increment (Select Address increases (+1) according to the number of data. ͅ
S
̈́ᆯͅ
Slave Address A Select Address A
MSB
LSB
MSB
LSB MSB
Data1
LSB
A
MSB
Data2
LSB
A ¦¦¦¦
MSB LSB
DataN
A
P
[1] Data 1 shall be set as data of address specified by Select Address.
[2] Data 2 shall be set as data of address specified by Select Address +1.
[3] Data N shall be set as data of address specified by Select Address +N-1.
Slave Address
Because the slave address can be changed by the SELECT setting, it is possible to use two chips simultaneously on a single
control BUS .
MSB
LSB
SELECTvoltage condition
A6
A5
A4
A3
A2
A1
A0
R/W
GND ̻ 0.2×VCC
1
0
0
0
0
0
0
0
0.8×VCC ̻ VCC
1
0
0
0
0
1
0
0
Set the SELECT voltage within the condition defined.
Data format
Items to be set
Select
Address
(HEX)
Input Selector
MSB
Data
LSB
D7
D6
D5
D4
D3
00
*
*
*
*
*
Volume ch1
01
*
*
Volume attenuation ch1
Volume ch2
02
*
*
Volume attenuation ch2
Gain Selector
03
*
*
*
*Don’t care
4/8
*
*
D2
D1
D0
Input Selector
*
Gain Selector
ƔApplication circuit diagram
DVD
V CC
A/D
SELECT
OUT1
80HEX 84HEX
OUT2
㪚 㪈㪌㩷
㪉㪇㩷
10ȝ
10ȝ
㪈㪐㩷
FILTER
SCL
SDA
㪈㪊㩷
㪈㪉㩷
DGND
㪚 㪈㪈㩷
10ȝ
㪊㪊㩷
㪈㪏㩷
AGND
㪚 㪈㪉㩷
㪚 㪈㪊㩷
㪚 㪈㪋㩷
10ȝ
VRR
V CC
㪈㪎㩷
10ȝ
㪈㪍㩷
㪈㪌㩷
㪈㪋㩷
AGND
V CC
㪈㪈㩷
DGND
I2C
LOGIC 㩷
Regulator
1/2V CC
0䌾-30.5dB/0.5dB step -㺙
0䌾-30.5dB/0.5dB step -㺙
GAIN SELECTOR
0, 2, 4, 6dB㩷
INPUT
㪈㪈㪇㫂㩷
㪈㪈㪇㫂㩷
㪈㩷
㪈㪈㪇㫂㩷
㪉㩷
㪊㩷
㪚 㪉㩷
㪚 㪈㩷
㪈㪈㪇㫂㩷
㪈㪈㪇㫂㩷
㪋㩷
㪌㩷
㪚 㪋㩷
㪚 㪊㩷
㪈㪈㪇㫂㩷
㪈㪈㪇㫂㩷
㪍㩷
㪎㩷
㪚 㪍㩷
㪚 㪌㩷
㪈㪈㪇㫂㩷
㪈㪈㪇㫂㩷
㪏㩷
㪚 㪎㩷
㪈㪈㪇㫂㩷
㪐㩷
㪈㪇㩷
㪚 㪐㩷
㪚 㪏㩷
㪚 㪈㪇㩷
1ȝ
1ȝ
1ȝ
1ȝ
1ȝ
1ȝ
1ȝ
1ȝ
1ȝ
1ȝ
Front1
Front2
Tuner1
Tuner2
EXT11
EXT12
EXT21
EXT22
EXT31
EXT32
Fig.2! Application Circuit Diagram
Pin No. Pin Name
Pin Description
Pin No.
Pin Name
Pin Description
Ground ternial
1
Front1
Front 1ch input terminal
11
DGND
2
Front2
Front 2ch input terminal
12
SDA
I2C communication data terminal
3
Tuner1 Tuner 1 ch input
13
SCL
I C communication clock
terminal
4
Tuner2 Tuner 2 ch input
14
AGND
5
EXT11 External 1 1ch input terminal
15
FILTER 1/2VCC terminal
6
EXT12 External 1 2ch input terminal
16
VRR
Ripple filter terminal
7
EXT21 External 2 1ch input terminal
17
VCC
Power supply terminal
8
EXT22 External 2 2ch input terminal
18
OUT2
Volume 2ch output terminal
9
EXT31 External 3 1ch input terminal
19
OUT1
Volume 1ch output terminal
10
EXT32 External 3 2ch input terminal
20
2
5/8
Ground terminal
SELECT Slave address selection terminal
ƔReference data
85C
25C
-40C
㪊
㪉
㪈
㪇
㪌
㪈㪇
㪧㪦㪮㪜㪩㩷㪪㪬㪧㪧㪣㪰㩷㪑㩷㪭㪚㪚㩷㪲㪭㪴
㪈㪌
㪇㪅㪈
㪇㪅㪇㪇㪈
㪇㪅㪇㪇㪇㪈
㪇㪅㪇㪇㪈
㪫㪦㪫㪘㪣㩷㪟㪘㪩㪤㪦㪥㪠㪚㩷㪛㪠㪪㪫㪦㪩㪫㪠㪦㪥㩷㪑㩷㪫㪟㪛㪂㫅㩷㪲㩼㪴
VCC=12V
VCC=7V
㪇㪅㪇㪈
㪇㪅㪇㪇㪈
VOUT=VARIABLE
f=1kHz
㪇㪅㪇㪇㪇㪈
㪇㪅㪇㪇㪈
㪇㪅㪇㪈
㪇㪅㪈
㪈
㪈㪇
㪦㪬㪫㪧㪬㪫㩷㪭㪦㪣㪫㪘㪞㪜㩷㪑㩷㪭㪦㪬㪫㩷㪲㪭㫉㫄㫊㪴
6dB
4dB
2dB
0dB
㪄㪉
㪈㫂
㪈㪇㫂
㪇㪅㪇㪈
VIN=1[Vrms]
FILTER=LPF̈́80[kHz]ͅ
㪈㪇㪇
㪈㫂
㪈㪇㫂
㪝㪩㪜㪨㪬㪜㪥㪚㪰㩷㪑㩷㪽㩷㪲㪟㫑㪴
VIN=1[Vrms]
FILTER=NONE
0dB̻-3dB, 0.5dB/step
㪄㪈㪇
㪄㪈㪌
㪄㪉㪇
㪄㪉㪌
㪄㪊㪇
-5dB̻-30dB, 5dB/step
㪈㪇㪇
㪈㫂
㪈㪇㫂
㪇
㪄㪈
㪄㪉
㪄㪊
VIN=1[Vrms]
FILTER=NONE
㪈㪇
㪈㪇㪇
VIN=1[Vrms]
FILTER=LPF(80[kHz])
㪚㪩㪦㪪㪪㩷㪫㪘㪣㪢㩷㪑㩷㪚㪫㩷㪲㪻㪙㪴
㪍
㪋
㪉
㪄㪎㪇
㪄㪏㪇
㪄㪐㪇
2ch΂1ch
㪄㪈㪇㪇
1ch΂2ch
㪄㪈㪈㪇
㪇
㪄㪊㪇
㪄㪋㪇
㪭㪦㪣㪬㪤㪜㩷㪘㪫㪫㪜㪥㪬㪘㪫㪠㪦㪥㩷㪑㩷㪘㪫㪫㩷㪲㪻㪙㪴
Fig.12 Volume attenuation vs.
voltage attenuation
㪈㪇
㪈㪇㪇
㪈㫂
㪈㪇㫂
㪝㪩㪜㪨㪬㪜㪥㪚㪰㩷㪑㩷㪽㩷㪲㪟㫑㪴
㪈㪇㪇㫂
Fig.13 Cross Talk vs. Frequency
6/8
㪈㫂
㪈㪇㫂
㪈㪇㪇㫂
Fig.8 Voltage gain vs. Frequency
㪄㪍㪇
㪄㪎㪇
㪄㪏㪇
㪄㪐㪇
㪄㪈㪇㪇
㪄㪈㪈㪇
VIN=1[Vrms]
FILTER=LPF(30[kHz])
㪄㪈㪉㪇
㪈㪇
㪈㪇㪇
㪈㫂
㪈㪇㫂
㪈㪇㪇㫂
㪝㪩㪜㪨㪬㪜㪥㪚㪰㩷㪑㩷㪽㩷㪲㪟㫑㪴
㪄㪍㪇
㪄㪉㪇
㪈
㪈㪇㪇㫂
Fig.10 Volume attenuation vs.
Frequency
Rg=0[Ԉ]!
FILTER=DIN AUDIO
㪄㪈㪇
㪉
㪝㪩㪜㪨㪬㪜㪥㪚㪰㩷㪑㩷㪽㩷㪲㪟㫑㪴
㪏
㪈㪇
㪝㪩㪜㪨㪬㪜㪥㪚㪰㩷㪑㩷㪽㩷㪲㪟㫑㪴
㪇
㪈㪇
㪈㪇
㪈
㪊
㪈㪇㪇㫂
㪄㪌
Fig.9 Gain selector voltage gain vs.
Frequency
㪇㪅㪈
Fig.5 Total harmonic distortion vs.
Output voltage
㪇㪅㪇㪇㪈
㪈㪇㪇㫂
㪇㪅㪇㪈
㪄㪋
㪝㪩㪜㪨㪬㪜㪥㪚㪰㩷㪑㩷㪽㩷㪲㪟㫑㪴
㪇
㪇㪅㪇㪇㪇㪈
㪇㪅㪇㪇㪈
Fig.11 Maximum volume attenuation vs.
Frequency
㪤㪘㪯㪠㪤㪬㪤㩷㪦㪬㪫㪧㪬㪫㩷㪭㪦㪣㪫㪘㪞㪜㩷㪑㩷㪭㪦㪬㪫㩷㪲㪭㫉㫄㫊㪴
㪈㪇㪇
VOUT=VARIABLE
f=1kHz
FILTER=DIN AUDIO
㪦㪬㪫㪧㪬㪫㩷㪭㪦㪣㪫㪘㪞㪜㩷㪑㩷㪭㪦㪬㪫㩷㪲㪭㫉㫄㫊㪴
㪄㪊㪌
㪈㪇
㪇㪅㪇㪇㪈
Fig.7 Total harmonic distortion vs.
Frequency
㪭㪦㪣㪬㪤㪜㩷㪘㪫㪫㪜㪥㪬㪘㪫㪠㪦㪥㩷㪑㩷㪘㪫㪫㩷㪲㪻㪙㪴
㪏
㪇
㪈㪇
㪇㪅㪈
㪌
㪉
㪈
㪇㪅㪇㪈
㪋
㪈㪇
VIN=100[mVrms]
FILTER=NONE
㪋
㪇㪅㪈
0dB
㪈
Fig.6 Total harmonic distortion vs.
Output voltage
㪦㪬㪫㪧㪬㪫㩷㪥㪦㪠㪪㪜㩷㪭㪦㪣㪫㪘㪞㪜㩷㪑㩷㪭㪥㪦㩷㪲㱘㪭㫉㫄㫊㪴
㪫㪦㪫㪘㪣㩷㪟㪘㪩㪤㪦㪥㪠㪚㩷㪛㪠㪪㪫㪦㪩㪫㪠㪦㪥㩷㪑㩷㪫㪟㪛㪂㫅㩷㪲㩼㪴
VCC=14.5V
㪍
㪇㪅㪇㪈
-10dB
㪇㪅㪈
Fig.4 Total harmonic distortion vs.
Output Voltage
㪈
㪞㪘㪠㪥㩷㪪㪜㪣㪜㪚㪫㪦㪩㩷㪭㪦㪣㪫㪘㪞㪜㩷㪞㪘㪠㪥㩷㪑㩷㪞㫍㩷㪲㪻㪙㪴
VOUT=VARIABLE
f=1kHz
FILTER=DIN AUDIO
-20dB
㪦㪬㪫㪧㪬㪫㩷㪭㪦㪣㪫㪘㪞㪜㩷㪑㩷㪭㪦㪬㪫㩷㪲㪭㫉㫄㫊㪴
㪈㪇
㪈㪇
-40C
㪇㪅㪇㪈
Fig.3 Quiescent Current vs.
Power Supply!
㪇㪅㪈
85C
25C
-30dB
㪈
㪭㪦㪣㪫㪘㪞㪜㩷㪞㪘㪠㪥㩷㪑㩷㪞㫍㩷㪲㪻㪙㪴
㪇
㪈
㪈㪇
㪤㪘㪯㪠㪤㪬㪤㩷㪭㪦㪣㪬㪤㪜㩷㪘㪫㪫㪜㪥㪬㪘㪫㪠㪦㪥㩷㪑㩷㪘㪫㪫㩷㪲㪻㪙㪴
㪋
㪈㪇
㪫㪦㪫㪘㪣㩷㪟㪘㪩㪤㪦㪥㪠㪚㩷㪛㪠㪪㪫㪦㪩㪫㪠㪦㪥㩷㪑㩷㪫㪟㪛㪂㫅㩷㪲㩼㪴
㪫㪦㪫㪘㪣㩷㪟㪘㪩㪤㪦㪥㪠㪚㩷㪛㪠㪪㪫㪦㪩㪫㪠㪦㪥㩷㪑㩷㪫㪟㪛㪂㫅㩷㪲㩼㪴
㪨㪬㪠㪜㪪㪚㪜㪥㪫㩷㪚㪬㪩㪩㪜㪥㪫㩷㪑㩷㪠㪨㩷㪲㫄㪘㪴
㪌
㪋
㪊㪅㪌
㪊
VCC=12[V]
f=1 [kHz]
㪉㪅㪌
㪉
㪈㪅㪌
㪈
㪇㪅㪌
㪇
㪈㪇㪇
㪈㫂
㪈㪇㫂
㪈㪇㪇㫂
㪣㪦㪘㪛㩷㪩㪜㪪㪠㪪㪫㪘㪥㪚㪜㩷㪑㩷㪩㪣㩷㪲㱅㪴
Fig.14 Maximum output voltage vs.
Load resistance
ƔHow to select application parts
Initial condition when power supply (17 pin) is turned ON
A circuit that carries out initialization in IC, when power supply (17 pin) is turned ON is incorporated. Settings are as shown in the
following table. However, it is recommended to transmit the data to all the addresses as initial data when power is turned ON, and
to apply mute while the initial data is input
Parameter
Symbol
Limits
Min.
Typ.
Max.
Unit
VCC rise time
Trise
20
-
-
ȝS
VCC voltage when power on
reset is released.
Vpor
-
2.6
-
V
Function
Conditions
VCC rise time from 0V to 3V
Initial Condition
Input MUTE
-͡dB
0dB
Input Selector
Volume
Gain SERECTOR
Signal input section
1) Setting for input coupling capacitor
In the signal input terminal, set the constant for the input coupling capacitor C(F), taking the input impedance RIN (ȍ)
inside into account. This makes up the primary HPF characteristics of the RC.
C\F^!
GAIN[dB^!
0
RIN!
͆ȍ͇
A(f)
SSH
F\Hz^!
Input terminal
Fig.15 Sigal input section
2) SHORT mode of input
SHORT mode is a command to reduce resistance by setting impedance RIN to switch SSH͛ON. When SHORT
command is not chosen, switch SSH is turned OFF. By using this command, it is possible to stop charging externally
mounted coupling capacitor C. Use SHORT mode when there is no signal since the SHORT mode turns ON the SSH
switch in order to achieve low impedance.
Ɣ Operation Notes
1.
2.
3.
4.
5.
6.
7.
Numbers and data in entries are representative design values and are not guaranteed values of the items.
Although ROHM is confident that the example application circuit reflects the best possible recommendations, be sure to verify
circuit characteristics for your particular application. Modification of constants for other externally connected circuits may cause
variations in both static and transient characteristics for external components as well as this Rohm IC. Allow for sufficient
margins when determining circuit constants.
Absolute maximum ratings
Use of the IC in excess of absolute maximum ratings, such as the applied voltage or operating temperature range (Topr), may
result in IC damage. Assumptions should not be made regarding the state of the IC (short mode or open mode) when such
damage is suffered. A physical safety measure, such as a fuse, should be implemented when using the IC at times where the
absolute maximum ratings may be exceeded.
GND potential
Ensure a minimum GND pin potential in all operating conditions. Make sure that no pins are at a voltage below the GND at any
time, regardless of whether it is a transient signal or not.
Thermal design
Perform thermal design, in which there are adequate margins, by taking into account the permissible dissipation (Pd) in actual
states of use.
Short circuit between terminals and erroneous mounting
Pay attention to the assembly direction of the ICs. Wrong mounting direction or shorts between terminals, GND, or other components
on the circuits, can damage the IC.
Operation in strong electromagnetic field
Using the ICs in a strong electromagnetic field can cause operation malfunction.
!
7/8
ƔSelection of order type
B
D
3
8
2
3
F
V
E
2
Tape and Reel information
Part No.
BD3823FV
SSOP-B20
<Dimension>
<Tape and Reel information>
20
11
0.3Min.
1
10
0.15 ± 0.1
2500pcs
Direction
of feed
(Correct direction: 1pin of product should be at the upper left when you hold
reel on the left hand, and you pull out the tape on the right hand)
E2
0.1
1234
1234
1234
1pin
1234
1234
Reel
㧔Unit:mm)
1234
1234
0.65 0.22 ± 0.1
Embossed carrier tape
1234
6.4 ± 0.3
1.15 ± 0.1
4.4 ± 0.2
0.1
6.5 ± 0.2
Tape
Quantity
Direction of feed
̪Orders are available in complete units only.
The contents described herein are correct as of October, 2005
The contents described herein are subject to change without notice. For updates of the latest information, please contact and confirm with ROHM CO.,LTD.
Any part of this application note must not be duplicated or copied without our permission.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. Please pay careful attention to the peripheral conditions when designing circuits and deciding
upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams and information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. ROHM CO.,LTD. disclaims any
warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such
infringement, or arising from or connected with or related to the use of such devices.
Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, implied right or license to practice or commercially exploit any intellectual property rights or other
proprietary rights owned or controlled by ROHM CO., LTD. is granted to any such buyer.
The products described herein utilize silicon as the main material.
The products described herein are not designed to be X ray proof.
Published by
Application Engineering Group
Catalog No.05T397Be '05. 10 ROHM C 1000 TSU
Appendix
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any
means without prior permission of ROHM CO.,LTD.
The contents described herein are subject to change without notice. The specifications for the
product described in this document are for reference only. Upon actual use, therefore, please request
that specifications to be separately delivered.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard
use and operation. Please pay careful attention to the peripheral conditions when designing circuits
and deciding upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams information, described herein
are intended only as illustrations of such devices and not as the specifications for such devices. ROHM
CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any
third party's intellectual property rights or other proprietary rights, and further, assumes no liability of
whatsoever nature in the event of any such infringement, or arising from or connected with or related
to the use of such devices.
Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or
otherwise dispose of the same, no express or implied right or license to practice or commercially
exploit any intellectual property rights or other proprietary rights owned or controlled by
ROHM CO., LTD. is granted to any such buyer.
Products listed in this document are no antiradiation design.
The products listed in this document are designed to be used with ordinary electronic equipment or devices
(such as audio visual equipment, office-automation equipment, communications devices, electrical
appliances and electronic toys).
Should you intend to use these products with equipment or devices which require an extremely high level
of reliability and the malfunction of which would directly endanger human life (such as medical
instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers
and other safety devices), please be sure to consult with our sales representative in advance.
It is our top priority to supply products with the utmost quality and reliability. However, there is always a chance
of failure due to unexpected factors. Therefore, please take into account the derating characteristics and allow
for sufficient safety features, such as extra margin, anti-flammability, and fail-safe measures when designing in
order to prevent possible accidents that may result in bodily harm or fire caused by component failure. ROHM
cannot be held responsible for any damages arising from the use of the products under conditions out of the
range of the specifications or due to non-compliance with the NOTES specified in this catalog.
Thank you for your accessing to ROHM product informations.
More detail product informations and catalogs are available, please contact your nearest sales office.
ROHM Customer Support System
www.rohm.com
Copyright © 2008 ROHM CO.,LTD.
THE AMERICAS / EUROPE / ASIA / JAPAN
Contact us : webmaster@ rohm.co. jp
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TEL : +81-75-311-2121
FAX : +81-75-315-0172
Appendix1-Rev2.0
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