ROHM BU7231SG

ROHM’s Selection Operational Amplifier/Comparator Series
Comparators:
Low Voltage CMOS
BU7251G,BU7251SG,BU7231G,BU7231SG,
BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM
No.09049EAT06
●Description
CMOS comparator BU7251/BU7231family and BU7252/BU7232 family are input full swing and push pull output comparator.
These ICs integrate one op-amp or two independent op-amps and phase compensation capacitor on a single chip.
The features of these ICs are low operating supplyVoltage that is +1.8V to +5.5V(single supply) and low supply current,
extremely low input bias current.
High speed
Single
Dual
Low power
Single
Dual
BU7251 G
(BU7251SG:105 ℃)
BU7252 F/FVM
(BU7252S F/FVM:105 ℃)
BU7231 G
(BU7231SG:105 ℃)
BU7232 F/FVM
(BU7232S F/FVM:105 ℃)
●Features
1) Low operating supply voltage (+1.8[V]～+5.5[V])
2) +1.8 [V]～+5.5[V](single supply)
±0.9[V]～±2.75[V](split supply)
3) Input and Output full swing
4) Push-pull output type
5) High speed operation
(BU7251 family, BU7252 family)
6) Low supply current
(BU7231 family, BU7232 family)
7) Internal ESD protection
Human body model (HBM) ±4000[V](Typ.)
8) Wide temperature range
-40[℃]～+85[℃]
(BU7251G,BU7252 family, BU7231G, BU7232 family)
-40[℃]～+105[℃]
(BU7251SG,BU7252S family, BU7231SG,BU7232S family)
● Pin Assignments
IN- 1
VSS 2
5
8 VDD
OUT1 1
VDD
IN1- 2
－
CH1
7 OUT2
- +
＋
IN+ 3
IN1+ 3
4
OUT
VSS 4
SSOP5
SOP8
BU7252F
BU7252SF
BU7232F
BU7232SF
BU7251G
BU7251SG
BU7231G
BU7231SG
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
1/18
CH2
+ -
6 IN25 IN2+
MSOP8
BU7252FVM
BU7252SFVM
BU7232FVM
BU7232SFVM
2009.05 - Rev.A
BU7251G,BU7251SG, BU7231G,BU7231SG,
BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM
Technical Note
●Absolute maximum ratings (Ta=25[℃])
Parameter
Supply Voltage
Differential Input Voltage (*1)
Input Common-mode voltage range
Operating Temperature
Storage Temperature
Maximum junction Temperature
Symbol
VDD-VSS
Vid
Vicm
Topr
Tstg
Tjmax
Rating
BU7251G,BU7252 F/FVM
BU7251SG,BU7252S F/FVM
BU7231G,BU7232 F/FVM
BU7231SG,BU7232S F/FVM
+7
VDD-VSS
(VSS-0.3) to VDD+0.3
-40 to+85
-40 to+105
-55 to+125
+125
Unit
V
V
V
℃
℃
℃
Note Absolute maximum rating item indicates the condition which must not be exceeded.
Application of voltage in excess of absolute maximum rating or use out absoluted maximum rated temperature environment may cause deterioration of characteristics.
(*1) The voltage difference between inverting input and non-inverting input is the differential input voltage.Then input terminal voltage is set to more then VEE.
●Electrical characteristics
○BU7251 family (Unless otherwise specified VDD=+3[V], VSS=0[V], Ta=25[℃])
Guaranteed Limit
Temperature
BU7251G,BU7251SG
Parameter
Symbol
Unit
Condition
range
Min.
Typ.
Max.
Vio
25℃
mV
Input Offset Voltage (*2)(*4)
1
11
Iio
25℃
pA
Input Offset Current (*2)
1
Ib
25℃
pA
Input Bias Current (*2)
1
Vicm
25℃
V (VDD-VSS)=3[V]
Input Common-mode voltage Range
0
3
AV
25℃
dB RL=10[kΩ]
Large Signal Voltage Gain
90
25℃
15
35
(*4)
IDD
μA RL=∞
Supply current
full range
50
PSRR
25℃
dB
Power supply rejection ratio
80
CMRR
25℃
dB
Common-mode rejection ratio
80
IOH
25℃
mA VDD-0.4
Output source current (*3)
1
2
IOL
25℃
mA VSS+0.4
Output sink current (*3)
3
6
VOH
25℃
V RL=10[kΩ]
High Level Output Voltage (*4)
VDD-0.1
VOL
25℃
Low Level Output Voltage (*4)
VSS+0.1 V RL=10[kΩ]
Tr
25℃
ns CL=15pF 100mV over drive
Output rise time
50
Tf
25℃
ns CL=15pF 100mV over drive
Output fall time
20
TPLH
25℃
μs CL=15pF 100mV over drive
Propagation delay L to H
0.55
TPHL
25℃
μs CL=15pF 100mV over drive
Propagation delay H to L
0.25
(*2)
(*3)
(*4)
Abusolute values
Reference to power dissipation under the high temperature environment and decide the output current.
Continuous short circuit is occurring the degenerate of output current characteristics.
Full range BU7251：Ta=-40[℃] to +85[℃] BU7251S：Ta=-40[℃] to +105[℃]
○BU7252 family (Unless otherwise specified VDD=+3[V], VSS=0[V], Ta=25[℃])
Guaranteed Limit
Temperature
BU7252 F/FVM
Parameter
Symbol
Unit
Condition
BU7252S F/FVM
range
Min.
Typ.
Max.
Vio
25℃
mV
Input Offset Voltage (*2)(*4)
1
11
Iio
25℃
pA
Input Offset Current (*2)
1
Ib
25℃
pA
Input Bias Current (*2)
1
Vicm
25℃
V (VDD-VSS)=3[V]
Input Common-mode voltage Range
0
3
AV
25℃
dB RL=10[kΩ]
Large Signal Voltage Gain
90
25℃
35
65
IDD
μA RL=∞
Supply current(*4)
full range
80
PSRR
25℃
dB
Power supply rejection ratio
80
CMRR
25℃
dB
Common-mode rejection ratio
80
IOH
25℃
mA VDD-0.4
Output source current (*3)
1
2
IOL
25℃
mA VSS+0.4
Output sink current (*3)
3
6
VOH
25℃
V RL=10[kΩ]
High Level Output Voltage (*4)
VDD-0.1
VOL
25℃
Low Level Output Voltage (*4)
VSS+0.1 V RL=10[kΩ]
Tr
25℃
ns CL=15pF 100mV over drive
Output rise time
50
Tf
25℃
ns CL=15pF 100mV over drive
Output fall time
20
TPLH
25℃
μs CL=15pF 100mV over drive
Propagation delay L to H
0.55
TPHL
25℃
μs CL=15pF 100mV over drive
Propagation delay H to L
0.25
(*2)
(*3)
(*4)
Abusolute values
Reference to power dissipation under the high temperature environment and decide the output current.
Continuous short circuit is occurring the degenerate of output current characteristics.
Full range BU7251,BU7252：Ta=-40[℃] to +85[℃] BU7251S,BU7252S：Ta=-40[℃] to +105[℃]
2/18
BU7251G,BU7251SG, BU7231G,BU7231SG,
BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM
Technical Note
○BU7231 family (Unless otherwise specified VDD=+3[V], VSS=0[V], Ta=25[℃])
Guaranteed Limit
Temperature
Parameter
Symbol
BU7231G,BU7231SG
range
Min.
Typ.
Max.
Unit
Condition
Input Offset Voltage (*5)
Vio
25℃
-
1
11
mV
-
(*5)
Iio
25℃
-
1
-
pA
-
Ib
25℃
-
1
-
pA
-
Input Offset Current
Input Bias Current (*5)
Input Common-mode voltage Range
Vicm
25℃
0
-
3
V
(VDD-VSS)=3[V]
Large Signal Voltage Gain
AV
25℃
-
90
-
dB
RL=10[kΩ]
Supply current
IDD
25℃
-
5
15
full range
-
-
30
μA
RL=∞
25℃
-
80
-
Power supply rejection ratio
PSRR
Common-mode rejection ratio
CMRR
25℃
-
80
-
dB
IOH
25℃
1
2
-
mA
VDD-0.4
IOL
25℃
3
6
-
mA
VSS+0.4
VOH
25℃
VDD-0.1
-
-
V
RL=10[kΩ]
VOL
25℃
-
-
VSS+0.1
V
RL=10[kΩ]
Output source current (*6)
Output sink current (*6)
High Level Output Voltage
(*7)
Low Level Output Voltage (*7)
dB
-
Output rise time
Tr
25℃
-
50
-
ns
CL=15pF 100mV over drive
Output fall time
Tf
25℃
-
20
-
ns
CL=15pF 100mV over drive
Propagation delay L to H
TPLH
25℃
-
1.7
-
μs
CL=15pF 100mV over drive
Propagation delay H to L
TPHL
25℃
-
0.5
-
mV
CL=15pF 100mV over drive
(*5)
(*6)
(*7)
Abusolute values
Reference to power dissipation under the high temperature environment and decide the output current.
Continuous short circuit is occurring the degenerate of output current characteristics.
Full range BU7231：Ta=-40[℃] to +85[℃] BU7231S,BU7232S：Ta=-40[℃] to +105[℃]
○BU7232 family (Unless otherwise specified VDD=+3[V], VSS=0[V], Ta=25[℃])
Guaranteed Limit
Temperature
BU7232F/FVM
Parameter
Symbol
BU7232S F/FVM
range
Min.
Typ.
Max.
Unit
Condition
Input Offset Voltage (*5)
Vio
25℃
-
1
11
mV
-
Input Offset Current (*5)
Iio
25℃
-
1
-
pA
-
Input Bias Current
(*5)
Ib
25℃
-
1
-
pA
Vicm
25℃
0
-
3
V
(VDD-VSS)=3[V]
Large Signal Voltage Gain
AV
25℃
-
90
-
dB
RL=10[kΩ]
Supply current
IDD
μA
RL=∞
Input Common-mode voltage Range
25℃
-
10
25
full range
-
-
50
-
Power supply rejection ratio
PSRR
25℃
-
80
-
dB
-
Common-mode rejection ratio
CMRR
25℃
-
80
-
dB
-
IOH
25℃
1
2
-
mA
Output source current
Output sink current
(*6)
(*6)
VDD-0.4
IOL
25℃
3
6
-
mA
High Level Output Voltage (*7)
VOH
25℃
VDD-0.1
-
-
V
RL=10[kΩ]
VSS+0.4
Low Level Output Voltage (*7)
VOL
25℃
-
-
VSS+0.1
V
RL=10[kΩ]
Output rise time
Tr
25℃
-
50
-
ns
CL=15pF 100mV over drive
Output fall time
Tf
25℃
-
20
-
ns
CL=15pF 100mV over drive
Propagation delay L to H
TPLH
25℃
-
1.7
-
μs
CL=15pF 100mV over drive
Propagation delay H to L
TPHL
25℃
-
0.5
-
mV
CL=15pF 100mV over drive
(*5)
(*6)
(*7)
Abusolute values
Reference to power dissipation under the high temperature environment and decide the output current.
Continuous short circuit is occurring the degenerate of output current characteristics.
Full range,BU7232：Ta=-40[℃] to +85[℃] BU7232S：Ta=-40[℃] to +105[℃]
3/18
BU7251G,BU7251SG, BU7231G,BU7231SG,
BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM
●Example of electrical characteristics
○BU7251 family
BU7251 family
BU7251G
400
200
BU7251 family
60
50
600
SUPPLY CURRENT [μA]
600
BU7251 family
800
POWER DISSIPATION [mW] .
POWER DISSIPATION [mW] .
800
Technical Note
BU7251SG
400
200
105℃
40
85℃
30
25℃
20
10
-40℃
0
0
50
100
AMBIENT TEMPERATURE [℃]
0
150
50
Fig. 1
Derating Curve
5.5V
20
3.0V
10
25℃
30
105℃
85℃
20
10
-40℃
25℃
2
3
4
5
SUPPLY VOLTAGE [V]
40
30
3.0V
1.8V
20
1.8V
10
3.0V
30
60
90
1.8V
2
-60
-30
0
30
60
90
AMBIENT TEMPERATURE [℃]
120
Fig. 6
Output Voltage High – Ambient Temperature
(RL=10[kΩ])
BU7251 family
10
8
-40℃
6
25℃
4
85℃
0
30
60
90
120
0.0
0.5
25
25℃
15
105℃
85℃
10
5
0.5
1.0
1.5
2.0
2.5
1.5
2.0
2.5
3.0
Fig. 9
Output Source Current – Supply
Voltage(VDD=3[V])
-40℃
20
1.0
OUTPUT VOLTAGE [V]
BU7251 family
30
3.0
OUTPUT VOLTAGE [V]
AMBIENT TEMPERATURE [℃]
Fig. 10
Output Source Current – Ambient Temperature
105℃
2
Fig. 8
0.0
120
0
-30
0
0
3.0V
Output Voltage Low – Ambient
Temperature(RL=10[kΩ])
OUTPUT SINK CURRENT [mA]
OUTPUT SOURCE CURRENT [mA]
5.5V
-30
5.5V
4
AMBIENT TEMPERATURE [℃]
4
1
5.5V
0
-60
6
BU7251 family
2
6
6
BU7251 family
50
(RL=10[kΩ])
3
BU7251 family
(RL=10[kΩ])
Fig. 7
Output Voltage Low – Supply Voltage
5
3
4
5
SUPPLY VOLTAGE [V]
Fig. 5
Output Voltage High – Supply Voltage
0
6
0
2
OUTPUT SOURCE CURRENT [mA]
40
0
-60
-40℃
1
OUTPUT VOLTAGE LOW [mV]
OUTPUT VOLTAGE LOW [mV]
85℃
120
BU7251 family
50
3
4
5
SUPPLY VOLTAGE [V]
8
0
-30
0
30
60
90
AM BIENT TEM PERATURE [℃]
Fig. 4
Supply Current – Ambient Temperature
1
105℃
4
2
2
Fig. 3
Supply Current – Supply Voltage
OUTPUT VOLTAGE HIGH [V]
30
0
-60
1
BU7251 family
6
OUTPUT VOLTAGE HIGH [V]
SUPPLY CURRENT [μA]
40
1.8V
150
Fig. 2
Derating Curve
BU7251 family
50
100
AMBIENT TEMPERATURE [℃]
BU7251 family
20
OUTPUT SINK CURRENT [mA]
0
0
15
5.5V
10
3.0V
1.8V
5
0
-60
-30
0
30
60
90
120
AMBIENT TEMPERATURE [℃]
Fig. 11
Output Sink Current – Output Voltage
Fig. 12
Output Sink Current – Ambient Temperature
(VDD=3[V])
(VOUT=VSS+0.4[V])
(VOUT=VDD-0.4[V])
(*) The above date is ability value of sample, it is not guaranteed.
BU7251G：-40[℃] to+85[℃] BU7251SG：-40[℃] to+105[℃]
4/18
BU7251G,BU7251SG, BU7231G,BU7231SG,
BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM
BU7251 family
10.0
5.0
85℃
2.5
0.0
105℃
25℃
7.5
INPUT OFFSET VOLTAGE [mV]
-40℃
-2.5
-5.0
-7.5
5.0
3.0V
2.5
0.0
5.5V
1.8V
-2.5
-5.0
-7.5
-10.0
-10.0
1
2
3
4
5
6
-30
0
30
60
90
AMBIENT TEMPERATURE [℃]
Fig. 13
(Vicm=VDD, Vout=0.1[V])
85℃
100
-40℃
80
25℃
140
120
3.0V
5.5V
80
-60
3.0V
1.8V
40
20
0
-60
-30
0
30
60
90
AMBIENT TEMPERATURE [℃]
-30
0
30
60
90
AMBIENT TEMPERATURE [℃]
(VDD=3[V])
100
120
80
105℃
60
-40℃
40
20
0
1
2
3
4
5
SUPPLY VOLTAGE [V]
80
60
40
20
BU7251 family
2.0
1.5
1.8V
1.0
5.5V
3.0V
0.5
0.0
-30
0
30
60
90
AMBIENT TEMPERATURE [℃]
Fig. 20
Power Supply Rejection –
Ambient Temperature
120
-60
-30
0
30
60
90
AMBIENT TEMPERATURE [℃]
Fig. 21
Propagation Delay L-H –
Ambient Temperature
BU7251 family
0.6
0.4
1.8V
0.2
5.5V
3.0V
0.0
-60
-30
0
30
60
90
AMBIENT TEMPERATURE [℃]
120
Fig. 22
Propagation Delay H-L – Ambient Temperature
(*) The above date is ability value of sample, it is not guaranteed.
6
Fig. 18
Common Mode rejection Ratio
– Supply Voltage(VDD=3[V])
100
0
-60
25℃
85℃
120
BU7251 family
120
Fig. 19
Common Mode Rejection Ratio –
Ambient Temperature
0.8
4
BU7251 family
120
Fig. 17
Large Signal Voltage Gain
– Ambient Temperature
POWER SUPPLY REJECTION RATIO [dB]
COMMON MODE REJECTION RATIO [dB]
80
PROPAGATION DELAY H-L [μs]
1.8V
100
6
5.5V
60
1
2
3
INPUT VOLTAGE [V]
(VDD=3[V])
BU7251 family
160
BU7251 family
100
0
Fig. 15
Fig. 16
Large Signal Voltage Gain – Supply Voltage
120
-1
PROPAGATION DELAY L-H [μs]
3
4
5
SUPPLY VOLTAGE [V]
25℃
-10
120
60
2
-40℃
-5
Input offset voltage – Input Voltage
60
1
105℃
Fig. 14
LARGE SIGNAL VOLTAGE GAIN [dB]
LARGE SIGNAL VOLTAGE GAIN [dB]
120
85℃
0
(Vicm=VDD, Vout=0.1[V])
140
105℃
5
Input Offset Voltage – Ambient Temperature
BU7251 family
160
10
-15
-60
SUPPLY VOLTAGE [V]
Input Offset Voltage – Supply Voltage
BU7251 family
15
COMMON MODE REJECTION RATIO [dB]
INPUT OFFSET VOLTAGE [mV]
7.5
BU7251 family
10.0
INPUT OFFSET VOLTAGE [mV]
○BU7251 family
Technical Note
BU7251G：-40[℃] to+85[℃] BU7251SG：-40[℃] to+105[℃]
5/18
120
BU7251G,BU7251SG, BU7231G,BU7231SG,
BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM
BU7252 family
800
600
BU7252F
BU7252FVM
400
200
85 100
50
AMBIENT TEMPERATURE [℃] .
600
BU7252SF
BU7252SFVM
400
200
100
105℃
85℃
50
0
0
100 105
50
150
1
2
AMBIENT TEMPERATURE [℃] .
Fig. 24
Derating Curve
BU7252 family
3
4
5
SUPPLY VO LTAGE [V]
6
Fig. 25
Supply Current – Supply Voltage
BU7252 family
8
25℃
-40℃
0
150
Fig. 23
Derating Curve
150
BU7252 family
150
800
0
0
BU7252 family
1000
POWER DISSIPATION [mV]
POWER DISSIPATION [mV]
1000
SUPPLY CURRENT [μA]
○BU7252 family
Technical Note
BU7252 family
8
100
5.5V
3.0V
1.8V
50
0
OUTPUT VOLTAGE HIGH [V]
OUTPUT VOLTAGE HIGH [V]
SUPPLY CURRENT [μA]
5.5V
6
105℃
85℃
4
25℃
-40℃
2
0
-60
-30
0
30
60
90
AMBIENT TEMPERATURE [℃]
1
2
3
4
5
SUPPLY VOLTAGE [V]
(RL=10[kΩ])
30
105℃
85℃
20
10
25℃
5.5V
3.0V
20
10
1.8V
-40℃
2
3
4
5
SUPPLY VOLTAGE [V]
Fig. 29
Output Voltage Low – Supply
Voltage(RL=10[kΩ])
3
3.0V
2
1.8V
1
0
-60
-30
0
30
60
90
AMBIENT TEMPERATURE [℃]
0
30
60
90
4
120
-40℃
25
25℃
20
15
10
85℃
105℃
5
0.0
AMBIENT TEMPERATURE [℃]
Fig. 32
Output Source Current – Ambient Temperature
85℃
105℃
2
0
0.5
1.0
1.5
2.0
2.5
3.0
OUTPUT VOLTAGE [V]
Fig. 33
Output Sink Current – Output Voltage
(VOUT=VDD-0.4[V])
(*) The above date is ability value of sample, it is not guaranteed.
(VDD=3[V])
BU7252 F/FVM：-40[℃] to+85[℃]
6/18
0.5
1
1.5
2
2.5
3
OUTPUT VOLTAGE [V]
0
-30
25℃
6
120
Fig. 31
Output Source Current – Output
Voltage(VDD=3[V])
BU7252 family
30
OUTP UT SINK CURRENT [mA]
5.5V
4
-40℃
Fig. 30
Output Voltage Low – Ambient
Temperature(RL=10[kΩ])
BU7252 family
5
8
0
-60
6
BU7252 family
10
BU7252 family
20
OUTPUT SINK CURRENT [mA]
1
OUTPUT SOURCE CURRENT [mA]
Output Voltage High – Ambient Temperature
0
0
120
(RL=10[kΩ])
40
30
-30
0
30
60
90
AMBIENT TEMPERATURE [℃]
Fig. 28
OUTPUT SOURCE CURRENT [mA]
40
1.8V
2
-60
BU7252 family
50
OUTPUT VOLTAGE LOW [mV]
OUTPUT VOLTAGE LOW [mV]
50
3.0V
6
Fig. 27
Output Voltage High – Supply Voltage
BU7252 family
4
0
120
Fig. 26
Supply Curreny – Ambient Temperature
6
15
5.5V
10
3.0V
1.8V
5
0
-60
-30
0
30
60
90
120
AMBIENT TEMPERATURE [℃]
Fig. 34
Output Sink Current – Ambient Temperature
(VOUT=VSS+0.4[V])
BU7252S F/FVM：-40[℃] to+105[℃]
BU7251G,BU7251SG, BU7231G,BU7231SG,
BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM
Technical Note
○BU7252 family
BU7252 family
5.0
2.5
25℃
-40℃
0.0
-2.5
85℃
105℃
-5.0
-7.5
5.0
2.5
1.8V
5.5V
-5.0
-7.5
-10.0
-10.0
2
3
4
5
SUPPLY VOLTAGE[V]
Fig. 35
Input Offset Voltage – Supply Voltage
-30
0
30
60
90
AMBIENT TEMPERATURE [℃]
25℃
100
85℃
80
60
-40℃
40
20
2
3
4
5
SUPPLY VOLTAGE [V]
140
120
1.8V
100
80
3.0V
60
5.5V
40
6
-60
-30
0
30
60
90
AMBIENT TEMP ERATURE [℃]
Fig. 38
5.5V
60
1.8V
3.0V
20
0
-60
-1
-30
0
30
60
90
AMBIENT TEMPERATURE [℃]
120
100
80
60
40
20
0
-60
-30
0
30
60
90
120
AMBIENT TEMPERATURE [℃]
Fig. 41
Common Mode Rejection – Ambient
Temperature (VDD=3[V])
1
2
3
INPUT VOLTAGE [V]
100
80
85℃
Fig. 42
Power Supply Rejection Ratio – Ambient
Temperature
105℃
60
25℃
40
-40℃
20
0
1
2
3
4
5
SUPPLY VOLTAGE [V]
BU7252 family
2.0
1.5
1.8V
1.0
5.5V
0.5
3.0V
0.0
-60
-30
0
30
60
90
AMBIENT TEMPERATURE [℃]
1.8V
3.0V
0.2
5.5V
0.0
-60
-30
0
30
60
90
AMBIENT TEMPERATURE [℃]
120
Fig. 44
Propagation Delay H-L – Ambient Temperature
(*) The above date is ability value of sample, it is not guaranteed.
BU7252 F/FVM：-40[℃] to+85[℃]
120
Fig. 43
Propagation Delay L-H – Ambient
Temperature
0.6
0.4
6
Fig. 40
Common Mode Rejection Ratio
– Supply Voltage (VDD=3[V])
BU7251 family
0.8
4
BU7252 family
120
120
BU7252 family
120
0
Fig. 37
Input Offset Voltage – Input Voltage
PROPAGATION DELAY L-H [μs]
POWER SUPPLY REJECTION RATIO [dB]
COMMON MODE REJECTION RATIO [dB]
100
40
85℃
Large Signal Voltage Gain
– Ambient Temperature
BU7252 family
80
105℃
-10
Fig. 39
Large Signal Voltage Gain – Supply
Voltage
120
-5
(VDD=3[V])
20
1
0
120
BU7252 family
160
LARG E SIGNAL VOLTAGE GAIN [dB ]
LARGE SIGNAL VOLTAGE GAIN [dB]
140
120
25℃
(Vicm=VDD,VOUT=0.1[V])
BU7252 family
105℃
-40℃
5
Fig. 36
Input Offset Voltage – Ambient Temperature
(Vicm=VDD,VOUT=0.1[V])
160
10
-15
-60
6
COMMON MODE REJECTION RATIO [dB]
1
PROPAGATION DELAY H-L [μs]
3.0V
0.0
-2.5
BU7252 family
15
7.5
INPUT OFFSET VOLTAGE [mV]
INPUT OFFSET VOLTAGE [mV]
7.5
BU7252 family
10.0
INPUT OFFSET VOLTAGE [mV]
10.0
BU7252S F/FVM：-40[℃] to+105[℃]
7/18
5.5V
BU7251G,BU7251SG, BU7231G,BU7231SG,
BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM
○BU7231 series
BU7231 family
800
BU7231 family
800
POWER DISSIPATION [mW] .
600
BU7231G
400
200
BU7231 family
20
16
600
SUPPLY CURRENT [μA]
POWER DISSIPATION [mW] .
Technical Note
BU7231SG
400
200
105℃
12
85℃
8
25℃
4
-40℃
0
0
85
50
100
AMBIENT TEMPERATURE [℃]
Fig. 45
Derating Curve
12
0
50
100
8
6
3.0V
1.8V
-30
0
30
60
90
AM BIENT TEM PERATURE [℃]
2
105℃
85℃
25℃
-40℃
1
Fig. 48
Supply Current – Ambient Temperature
6
5.5V
4
3.0V
1.8V
2
0
0
120
2
3
4
5
SUPPLY VOLTAGE [V]
-60
6
Fig. 49
Output Voltage – Supply Voltage
-30
0
30
60
90
AMBIENT TEMPERATURE [℃]
(RL=10[kΩ])
105℃
85℃
20
25℃
10
-40℃
40
30
5.5V
20
10
3.0V
0
-60
0
0
2
4
6
SUPP LY VOLTAGE [V]
8
(RL=10[kΩ])
5.5V
3.0V
1.8V
1
0
-60
0
30
60
4
85℃
90
AMBIENT TEMPERATURE [℃]
120
Fig. 54
Output Source Current – Ambient Temperature
105℃
2
0
-30
0
30
60
90
120
0
0.5
1
1.5
2
2.5
3
OUTPUT VOLTAGE [V]
(RL=10[kΩ])
(VDD=3[V])
BU7231 family
30
25
-40℃
25℃
20
15
85℃
105℃
10
5
0
-30
25℃
Fig. 53
Output Source Current – Output Voltage
OUTPUT SINK CURRENT [mA]
OUTPUT SOURCE CURRENT [mA]
4
2
-40℃
6
Fig. 52
Output Voltage Low – Ambient Temperature
BU7231 family
3
8
AMBIENT TEMPERATURE [℃]
Fig. 51
Output Voltage Low – Supply Voltage
5
1.8V
0.0
0.5
1.0
1.5
2.0
2.5
3.0
OUTPUT VOLTAGE [V]
BU7231 family
20
OUTPUT SINK CURRENT [mA]
30
BU7231 family
10
OUTPUT SOURCE CURRENT [mA]
40
BU7231 family
50
OUTPUT VOLTAGE LOW [mV]
O UTPUT VOLTAGE LOW [mV]
50
120
Fig. 50
Output Voltage High – Ambient Temperature
(RL=10[kΩ])
BU7231 family
6
BU7231 family
8
4
2
3
4
5
SUPPLY VOLTAGE [V]
Fig. 47
Supply Current – Supply Voltage
BU7231 family
OUTPUT VOLTAGE HIGH [V]
OUTPUT VOLTAGE HIGH [V]
5.5V
2
-60
1
150
Fig. 46
Derating Curve
BU7231 family
6
4
105
AMBIENT TEMPERATURE [℃]
10
SUPPLY CURRENT [μA]
0
150
0
15
5.5V
10
5
0
-60
3.0V
1.8V
-30
0
30
60
90
AMBIENT TEMPERATURE [℃]
120
Fig. 55
Output Sink Current – Output Voltage
Fig. 56
Output Sink Current – Ambient Temperature
(VDD=3[V])
(VOUT=VSS+0.4[V])
(VOUT=VDD-0.4[V])
(*) The above date is ability value of sample, it is not guaranteed.
BU7231G：-40[℃] to+85[℃] BU7231SG：-40[℃] to+105[℃]
8/18
BU7251G,BU7251SG, BU7231G,BU7231SG,
BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM
Technical Note
○BU7231 series
BU7231 family
5.0
-40℃
2.5
25℃
0.0
105℃
-2.5
7.5
INPUT OFFSET VOLTAGE [mV]
85℃
-5.0
-7.5
5.0
3.0V
2.5
1.8V
0.0
5.5V
-2.5
-5.0
-7.5
-10.0
-10.0
1
2
3
4
5
6
-30
0
30
60
90
AMBIENT TEMPERATURE [℃]
SUPP LY VOLTAG E [V]
105℃
100
85℃
-40℃
25℃
80
60
140
1.8V
120
100
3.0V
80
5.5V
60
1
2
3
4
5
SUPPLY VOLTAGE [V]
6
-60
Fig. 60
Large Signal Voltage Gain – Supply Voltage
80
3.0V
60
1.8V
40
20
0
-60
-30
0
30
60
90
AMBIENT TEMPERATURE [℃]
120
Fig. 63
Common Mode Rejection Ratio
– Ambient Temperature (VDD=3[V])
0
1
2
3
INPUT VOLTAGE [V]
-30
0
30
60
90
AMBIENT TEMPERATURE [℃]
100
80
60
85℃
105℃
25℃
-40℃
40
20
0
1
120
2
3
4
5
SUPPLY VOLTAGE [V]
80
60
40
20
BU7231 family
5
4
3
5.5V
3.0V
2
1.8V
1
0
-30
0
30
60
90
AMBIENT TEMPERATURE [℃]
120
Fig. 64
Power Supply Rejection Ratio
– Ambient Temperature
-60
-30
0
30
60
90
AMBIENT TEMPERATURE [℃]
Fig. 65
Propagation Delay L-H
– Ambient Temperature
1.2
0.9
5.5V
0.6
1.8V
3.0V
0.3
0.0
-60
-30
0
30
60
90
AMBIENT TEMPERATURE [℃]
120
Fig. 66
Propagation Delay H-L– Ambient Temperature
(*) The above date is ability value of sample, it is not guaranteed.
6
Fig. 62
Common Mode Rejection Ratio
– Supply Voltage (VDD=3[V])
100
0
-60
BU7231 family
120
BU7231 family
120
4
(VDD=3[V])
BU7231 family
1.5
PROPAGATION DELAY H-L [μs]
25℃
Fig. 59
Input Offset Voltage – Input Voltage
PROPAGATION DELAY L-H [μs]
5.5V
-1
Fig. 61
POWER SUPPLY REJECTION RATIO [dB]
COMMON MODE REJECTION RATIO [dB]
100
-40℃
-10
Large Signal Voltage Gain
– Ambient Temperature
BU7231 family
120
105℃
-5
120
BU7231 family
160
LARGE SIGNAL VOLTAGE GAIN [dB]
LARGE SIGNAL VOLTAGE GAIN [dB]
120
85℃
0
(Vicm=VDD, Vout=0.1[V])
BU7231 family
140
5
Fig. 58
Input Offset Voltage – Ambient Temperature
(Vicm=VDD, Vout=0.1[V])
160
10
-15
-60
Fig. 57
Input Offset Voltage – Supply Voltage
BU7231 family
15
COMMON MODE REJECTION RATIO [dB]
INPUT OFFS ET VOLTAGE [mV ]
7.5
BU7231 family
10.0
INPUT OFFSET VOLTAGE [mV]
10.0
BU7231G：-40[℃] to+85[℃] BU7231SG：-40[℃] to+105[℃]
9/18
120
BU7251G,BU7251SG, BU7231G,BU7231SG,
BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM
Technical Note
○BU7232 family
POWER DISSIPATION [mV]
600
BU7232F
BU7232FVM
400
200
0
0
800
600
BU7232SF
BU7232SFVM
400
200
50
100105
AMBIENT TEMPERATURE [℃] .
OUTPUT VOLTAGE HIGH [V]
SUPPLY CURRENT [μA]
30
5.5V
3.0V
1.8V
10
0
20
10
1
BU7232 family
6
105℃
85℃
4
25℃
-40℃
2
2
3
4
5
SUPPLY VOLTAGE [V]
1
BU7232 family
8
2
3
4
5
6
SUPPLY VOLTAGE [V]
5.5V
6
4
3.0V
1.5V
2
-60
7
Fig. 71
Output Voltage High – Supply Voltage
-30
0
30
60
90
AMBIENT TEMPERATURE [℃]
85℃
20
10
25℃
-40℃
5.5V
3.0V
20
10
1.8V
0
0
2
3
4
5
SUPPLY VOLTAGE [V]
6
(RL=10[kΩ])
0
30
60
90
3.0V
2
1.8V
1
30
60
90
120
(VOUT=VDD-0.4[V])
0.5
1
1.5
2
2.5
3
Fig. 75
Output Source Current – Output Voltage
(VDD=3[V])
BU7232 family
20
-40℃
25℃
20
105℃
85℃
10
15
5.5V
10
5
3.0V
1.8V
0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
OUTPUT VOLTAGE [V]
AMBIENT TEMPERATURE [℃]
Fig. 76
Output Source Current – Ambient Temperature
85℃
105℃
2
OUTPUT VOLTAGE [V]
0
0
0
4
0
BU7232 family
30
OUTPUT SINK CURRENT [mA]
5.5V
-30
25℃
6
120
(RL=10[kΩ])
3
-60
-30
Fig. 74
Output Voltage Low – Ambient temperature
BU7232 family
4
-40℃
AMBIENT TEMPERATURE [℃]
Fig. 73
Output Voltage Low – Supply Voltage
5
8
0
-60
7
OUTPUT SINK CURRENT [mA]
1
OUTPUT SOURCE CURRENT [mA]
30
BU7232 family
10
OUTPUT SO URCE CURRENT [mA]
105℃
30
(RL=10[kΩ])
BU7232 family
40
OUTPUT VOLTAGE LOW [mV]
OUTPUT VOLTAGE LOW [mV]
40
120
Fig. 72
Output Voltage – Ambient Temperature
(RL=10[kΩ])
BU7232 family
50
6
0
120
Fig. 70
Supply Current – Ambient emperature
25℃
-40℃
150
0
-30
0
30
60
90
AMBIENT TEMPERATURE [℃]
85℃
Fig. 69
Supply Current – Supply Voltage
8
40
-60
105℃
Fig. 68
Derating Curve
BU7232 family
20
30
0
0
150
Fig. 67
Derating Curve
50
40
0
85
50
100
AMBIENT TEMPERATURE [℃] .
BU7232 family
50
OUTPUT VOLTAGE HIGH [V]
POWER DISSIPATION [mV]
800
BU7232 family
1000
SUPPLY CURRENT [µA]
BU7232 family
1000
-60
-30
0
30
60
90
120
AMBIENT TEMPERATURE [℃]
Fig. 77
Fig. 78
Output Sink Current – Output Voltage
Output Sink Current – Ambient Temperature
(*) The above date is ability value of sample, it is not guaranteed.
(VDD=3[V])
BU7232 F/FVM：-40[℃] to+85[℃]
10/18
(VOUT=VSS+0.4[V])
BU7232S F/FVM：-40[℃] to+105[℃]
BU7251G,BU7251SG, BU7231G,BU7231SG,
BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM
Technical Note
○BU7232 family
BU7232 family
5.0
2.5
85℃
25℃
-40℃
0.0
-2.5
105℃
-5.0
-7.5
-10.0
5.0
2.5
1.8V
2
3
4
5
AMBIENT TEMPERATURE [℃]
0.0
-2.5
5.5V
-5.0
-7.5
6
0
100
85℃
80
-40℃
25℃
-10
120
3
4
5
SUPPLY VOLTAGE [V]
140
120
1.8V
100
5.5V
80
3.0V
-60
6
Fig. 82
Large Signal Voltage Gain – Supply Voltage
POWER SUPPLY REJECTION RATIO [dB]
100
80
5.5V
60
40
1.8V
3.0V
20
0
-60
-30
0
30
60
90
AMBIENT TEMPERATURE [℃]
120
Fig. 85
Common Mode Rejection Ratio –
Ambient Temperature (VDD=3[V])
-30
0
30
60
90
AMBIENT TEMPERATURE [℃]
100
80
105℃
60
40
25℃
-40℃
20
0
1
2
3
4
5
SUPPLY VOLTAGE [V]
100
80
60
40
20
0
BU7232 family
5
4
5.5V
3
3.0V
2
1
1.8V
0
-60
-30
0
30
60
90
AMBIENT TEMPERATURE [℃]
120
Fig. 86
Power Supply Rejection Ratio
– Ambient Temperature
-60
-30
0
30
60
90
AMBIENT TEMPERATURE [℃]
Fig. 87
5.5V
1.8V
0.6
0.3
3.0V
0.0
-60
-30
0
30
60
90
AMBIENT TEMPERATURE [℃]
120
Fig. 88
Propagation Delay H-L – Ambient Temperature
(*) The above date is ability value of sample, it is not guaranteed.
BU7232 F/FVM：-40[℃] to+85[℃]
11/18
120
Propagation Delay L-H – Ambient
temperature
1.2
0.9
6
Fig. 84
Common Mode Rejection Ratio
– Supply Voltage (VDD=3[V])
BU7232 family
120
4
BU7232 family
120
120
BU7232 family
1.5
1
2
3
INPUT VOLTAGE [V]
(VDD=3[V])
Fig. 83
Large Signal Voltage Gain
– Ambient Temperature
BU7232 family
120
0
Fig. 81
Input Offset Voltage – Input Voltage
PROPAGATION DELAY L-H [μs]
2
-1
BU7232 family
60
60
1
85℃
-5
COMMON MODE REJECTION RATIO [dB]
25℃
105℃
-30
0
30
60
90
AMBIENT TEMPERATURE [℃]
160
LARGE SIGNAL VOLTAGE GAIN [dB]
140
120
105℃
(Vicm=VDD, VOUT=0.1[V])
BU7232 family
160
-40℃
5
Fig. 80
Input Offset Voltage – Ambient Temperature
(Vicm=VDD, VOUT=0.1[V])
COMMON MODE REJECTION RATIO [dB]
10
-15
-60
Fig. 79
Input Offset Voltage – Ambient Temperature
PROPAGATION DELAY H-L [us]
3.0V
BU7232 family
15
-10.0
1
LARGE SIGNAL VOLTAGE GAIN [dB]
7.5
INPUT OFFSET VOLTAGE [mV]
INPUT OFFSET VOLTAGE [mV]
7.5
BU7232 family
10.0
INPUT OFFSET VOLTAGE [mV]
10.0
BU7232S F/FVM：-40[℃] to+105[℃]
BU7251G,BU7251SG, BU7231G,BU7231SG,
BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM
Technical Note
●Schematic diagram
Fig. 89 Simplified schematic
●Test circuit1 NULL method
VDD,VSS,EK,Vicm, Unit : [V]
Parameter
Input offset voltage
VF
S1
S2
S3
VF1
ON
ON
ON
VF2
Large signal voltage gain
VF3
VF4
Common-mode rejection ratio
(Input common-mode voltage range)
VF5
VF6
Power supply rejection ratio
VF7
-Calculation1. Input offset Voltage (Vio)
Vio =
|VF1|
1+Rf/Rs
VSS
EK
Vicm
OFF
3
0
-0.1
0.3
1
ON
ON
3
0
0.3
2
ON
ON
OFF
3
0
-0.1
ON
ON
OFF
0
-0.1
1.8
5.5
-0.3
-2.7
[V]
2. Large signal voltage gain (Av)
3. Common-mode rejection ratio (CMRR)
4. Power supply rejection ratio (PSRR)
0.47[μF]
Rf
50[kΩ]
S1
0.1[uF]
VDD
RK
EK
500[kΩ]
0.01[μF]
RS＝ 50[Ω]
Ri＝ 1[MΩ]
Vicm
Ri＝ 1[MΩ]
RS＝ 50[Ω]
0.1[uF]
S2
+15[V]
500[kΩ]
DUT
RK
VSS
Calculation
VDD
S3
NULL
-15[V]
RL
50[kΩ]
Fig. 90 Test Circuit 1 (one channel only)
12/18
VF
0
3
0.3
3
4
BU7251G,BU7251SG, BU7231G,BU7231SG,
BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM
Technical Note
●Test circuit2 switch condition
Unit : [V]
supply current
SW
1
OFF
SW
2
ON
SW
3
ON
SW
4
OFF
SW
5
OFF
SW
6
OFF
SW
7
OFF
SW
8
OFF
maximum output voltage RL=10 [kΩ]
OFF
ON
ON
ON
OFF
OFF
ON
OFF
output current
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
response time
ON
OFF
ON
OFF
ON
OFF
OFF
ON
SW No.
VDD=3[V]
－
＋
SW1
SW2
SW3
SW4
SW5
SW6
SW7
SW8
GND
RL
VIN-
CL
VIN+
Vo
Fig. 91 Test circuit2 (one channel only)
V IN
[V]
V IN
Input
Wave
入力波形
[V]
Input
Wave
入力波形
1.6[V]
1.6[V]
100mV over drive
Vref=1.5[V]
Vref=1.5[V]
100mV over drive
1.4[V]
1.4[V]
V OUT
[V]
t
V OUT
[V]
Output Wave
出力波形
Output Wave
出力波形
3[V]
3[V]
1.5[V]
0[V]
1.5[V]
0[V]
t
TPHL
t
TPLH
Fig. 92
Slew rate input output wave
13/18
BU7251G,BU7251SG, BU7231G,BU7231SG,
BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM
Technical Note
●Description of electrical characteristics
Described here are the terms of electric characteristics used in this technical note. Items and symbols used are also shown.
Note that item name and symbol and their meaning may differ from those on another manufacture’s document or general
document.
1. Absolute maximum ratings
Absolute maximum rating item indicates the condition which must not be exceeded. Application of voltage in excess of absolute
Maximum rating or use out of absolute maximum rated temperature environment may cause deterioration of characteristics.
1.1 Power supply voltage(VDD/VSS)
Indicates the maximum voltage that can be applied between the positive power supply terminal and negative power supply
terminal without deterioration or destruction of characteristics of internal circuit.
1.2 Differential input voltage (Vid)
Indicates the maximum voltage that can be applied between non-inverting terminal and inverting terminal without
deterioration and destruction of characteristics of IC.
1.3 Input common-mode voltage range (Vicm)
Indicates the maximum voltage that can be applied to non-inverting terminal and inverting terminal without deterioration or
destruction of characteristics. Input common-mode voltage range of the maximum ratings not assure normal operation of IC.
When normal operation of IC is desired, the input common-mode voltage of characteristics item must be followed.
1.4 Power dissipation (Pd)
Indicates the power that can be consumed by specified mounted board at the ambient temperature 25℃(normal temperature).
As for package product, Pd is determined by the temperature that can be permitted by IC chip in the package(maximum
junction temperature) and thermal resistance of the package
2. Electrical characteristics item
2.1 Input offset voltage (Vio)
Indicates the voltage difference between non-inverting terminal and inverting terminal.
It can be translated into the input voltage difference required for setting the output voltage at 0 [V]
2.2 Input offset current (Iio)
Indicates the difference of input bias current between non-inverting terminal and inverting terminal.
2.3 Input bias current (Ib)
Indicates the current that flows into or out of the input terminal. It is defined by the average of input bias current at
non-inverting terminal and input bias current at inverting terminal.
2.4 Input common-mode voltage range (Vicm)
Indicates the input voltage range where IC operates normally.
2.5 Large signal voltage gain (AV)
Indicates the amplifying rate (gain) of output voltage against the voltage difference between non-inverting terminal and
inverting terminal. It is normally the amplifying rate (gain) with reference to DC voltage.
Av = (Output voltage fluctuation) / (Input offset fluctuation)
2.6 Circuit current (ICC)
Indicates the IC current that flows under specified conditions and no-load steady status.
2.7 Output sink current (OL)
Indicates the maximum current that can be output under specified output condition (such as output voltage and load condition).
2.8 Output saturation voltage, Low level output voltage (VOL)
Indicates the voltage range that can be output under specified load conditions.
2.9 Output leakage current, High level output current(I leak)
Indicates the current that flows into IC under specified input and output conditions.
2.10 Response Time (Tre)
The interval between the application of an input and output condition.
2.11 Common-mode rejection ratio (CMRR)
Indicates the ratio of fluctuation of input offset voltage when in-phase input voltage is changed. It is normally the fluctuation of DC.
CMRR ＝(Change of Input common-mode voltage)/(Input offset fluctuation)
2.12 Power supply rejection ratio (PSRR)
Indicates the ratio of fluctuation of input offset voltage when supply voltage is changed. It is normally the fluctuation of DC.
PSRR＝(Change of power supply voltage)/(Input offset fluctuation)
14/18
BU7251G,BU7251SG, BU7231G,BU7231SG,
BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM
Technical Note
●Derating curve
Power dissipation (total loss) indicates the power that can be consumed by IC at Ta=25℃(normal temperature).IC is heated
when it consumed power, and the temperature of IC ship becomes higher than ambient temperature. The temperature that
can be accepted by IC chip depends on circuit configuration, manufacturing process, and consumable power is limited. Power
dissipation is determined by the temperature allowed in IC chip (maximum junction temperature) and thermal resistance of
package (heat dissipation capability). The maximum junction temperature is typically equal to the maximum value in the
storage package (heat dissipation capability). The maximum junction temperature is typically equal to the maximum value in
the storage temperature range. Heat generated by consumed power of IC radiates from the mold resin or lead frame of the
package. The parameter which indicates this heat dissipation capability (hardness of heat release) is called thermal
resistance, represented by the symbol θj-a[℃/W]. The temperature of IC inside the package can be estimated by this thermal
resistance. Fig.93 (a) shows the model of thermal resistance of the package. Thermal resistance θja, ambient temperature Ta,
junction temperature Tj, and power dissipation Pd can be calculated by the equation below :
θja ＝ (Tj-Ta) / Pd
[℃/W]
・・・・・ (Ⅰ)
Derating curve in Fig.93 (b) indicates power that can be consumed by IC with reference to ambient temperature. Power that
can be consumed by IC begins to attenuate at certain ambient temperature. This gradient is determined by thermal
resistance θja. Thermal resistance θja depends on chip size, power consumption, package, ambient temperature, package
condition, wind velocity, etc even when the same of package is used. Thermal reduction curve indicates a reference value
measured at a specified condition. Fig94(c)-(f) show a derating curve for an example of BU7251family, BU7252 family, BU7231
family, BU7232 family.
Power dissipation Pd:[W]
LSIの消費電力[W]
Pd(max)
θja = ( Tj ー Ta ) / Pd [℃/W]
P2
θja2 < θja1
Ambient temperature Ta [℃]
θja2
P1
Tj(max)
θja1
Chip surface temperature Tj [℃]
0
Power dissipation P [W]
25
50
75
Ambient
temperature:Ta[℃]
周囲温度Ta[℃]
100
T j(max)
POWER DISSIPATION [mW] .
POWER DISSIPATION [mW] .
1000
600
540[mw]
BU7251G(*8)
BU7231G(*8)
400
200
0
800
620[mw]
600
480[mw] BU7252FVM(*10)
BU7232FVM(*10)
400
200
50
85 100
150
0
AMBIENT TEMPERATURE [℃]
(c) BU7251G
50
85
100
(d) BU7252F/FVM
BU7231G
BU7232F/FVM
1000
540[mw]
POWER DISSIPATION [mW] .
600
BU7251SG(*8)
BU7231SG(*8)
400
200
800
620[mw]
0
50
100 105
400
200
0
150
50
105
100
150
AMBIENT TEMPERATURE [℃]
AMBIENT TEMPERATURE [℃]
(e) BU7251SG
BU7252SF(*9)
BU7232SF(*9)
480[mw] BU7252SFVM(*10)
BU7232SFVM(*10)
600
0
0
BU7231SG
(f) BU7252S F/FVM
(*9)
6.2
BU72432S F/FVM
(*10)
4.8
When using the unit above Ta=25[℃], subtract the value above per degree[℃]. Permissible dissipation is the value
when FR4 glass epoxy board 70[mm]×70[mm]×1.6[mm] (cooper foil area below 3[%]) is mounted.
Fig. 94.
150
AMBIENT TEMPERATURE [℃]
800
POWER DISSIPATION [mW] .
BU7252F(*9)
BU7232F(*9)
0
0
(*8)
5.4
150
BU7251/BU7231
(b) Derating curve
(a) Thermal resistance
Fig. 93. Thermal resistance and power dissipation
800
125
Derating curve
15/18
Unit
[mW/℃]
BU7251G,BU7251SG, BU7231G,BU7231SG,
BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM
Technical Note
●Notes for use
1) Absolute maximum ratings
Absolute maximum ratings are the values which indicate the limits, within which the given voltage range can be safely
charged to the terminal.However, it does not guarantee the circuit operation.
2) Applied voltage to the input terminal
For normal circuit operation of voltage comparator, please input voltage for its input terminal within input common mode
voltage VDD+0.3[V].Then, regardless of power supply voltage,VSS-0.3[V] can be applied to inputterminals without
deterioration or destruction of its characteristics.
3) Operating power supply (split power supply/single power supply)
The voltage comparator operates if a given level of voltage is applied between VDD and VSS.
Therefore, the operational amplifier can be operated under single power supply or split power supply.
4) Power dissipation (pd)
If the IC is used under excessive power dissipation. An increase in the chip temperature will cause deterioration of the
radical characteristics of IC. For example, reduction of current capability.
Take consideration of the effective power dissipation and thermal design with a sufficient margin. Pd is reference to the
provided power dissipation curve.
5) Short circuits between pins and incorrect mounting
Short circuits between pins and incorrect mounting when mounting the IC on a printed circuits board, take notice of the
direction and positioning of the IC.
If IC is mounted erroneously, It may be damaged. Also, when a foreign object is inserted between output, between output
and VDD terminal or VSS terminal which causes short circuit, the IC may be damaged.
6) Using under strong electromagnetic field
Be careful when using the IC under strong electromagnetic field because it may malfunction.
7) Usage of IC
When stress is applied to the IC through warp of the printed circuit board,
The characteristics may fluctuate due to the piezo effect. Be careful of the warp of the printed circuit board.
8) Testing IC on the set board
When testing IC on the set board, in cases where the capacitor is connected to the low impedance,make sure to
discharge per fabrication because there is a possibility that IC may be damaged by stress.
When removing IC from the set board, it is essential to cut supply voltage.
As a countermeasure against the static electricity, observe proper grounding during fabrication process and take due
care when carrying and storage it.
9) The IC destruction caused by capacitive load
The transistors in circuits may be damaged when VDD terminal and VSS terminal is shorted with the charged output
terminal capacitor.
When IC is used as a operational amplifier or as an application circuit,where oscillation is not activated by an output
capacitor,the output capacitor must be kept below 0.1[μF] in order to prevent the damage mentioned above.
10) Decupling capacitor
Insert the deculing capacitance between VDD and VSS, for stable operation of operational amplifier.
11) Latch up
Be careful of input vltage that exceed the VDD and VSS. When CMOS device have sometimes occur latch up operation.
And protect the IC from abnormaly noise
16/18
BU7251G,BU7251SG, BU7231G,BU7231SG,
BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM
Technical Note
●Ordering part number
B
U
7
Part No.
2
5
2
Part No.
7231 , 7231S
7251 , 7251S
7252 , 7252S
7232 , 7232S
F
V
M
-
Package
G: SSOP5
F: SOP8
FVM: MSOP8
T
R
Packaging and forming specification
E2: Embossed tape and reel
(SOP8)
TR: Embossed tape and reel
(SSOP5/MSOP8)
SOP8
<Tape and Reel information>
7
5
6
6.2±0.3
4.4±0.2
0.3MIN
8
+6°
4° −4°
0.9±0.15
5.0±0.2
(MAX 5.35 include BURR)
1 2
3
Tape
Embossed carrier tape
Quantity
2500pcs
Direction
of feed
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
)
4
0.595
1.5±0.1
+0.1
0.17 -0.05
0.11
S
1.27
0.42±0.1
Direction of feed
1pin
Reel
(Unit : mm)
∗ Order quantity needs to be multiple of the minimum quantity.
SSOP5
5
4
1
2
0.2Min.
+0.2
1.6 −0.1
2.8±0.2
<Tape and Reel information>
+6°
4° −4°
2.9±0.2
3
Tape
Embossed carrier tape
Quantity
3000pcs
Direction
of feed
TR
The direction is the 1pin of product is at the upper right when you hold
( reel on the left hand and you pull out the tape on the right hand
1pin
+0.05
0.13 −0.03
0.05±0.05
1.1±0.05
1.25Max.
)
+0.05
0.42 −0.04
0.95
0.1
Direction of feed
(Unit : mm)
Reel
17/18
∗ Order quantity needs to be multiple of the minimum quantity.
BU7251G,BU7251SG, BU7231G,BU7231SG,
BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM
Technical Note
MSOP8
<Tape and Reel information>
2.8±0.1
4.0±0.2
8 7 6 5
0.6±0.2
+6°
4° −4°
0.29±0.15
2.9±0.1
(MAX 3.25 include BURR)
Tape
Embossed carrier tape
Quantity
3000pcs
Direction
of feed
TR
The direction is the 1pin of product is at the upper right when you hold
( reel on the left hand and you pull out the tape on the right hand
)
1 2 3 4
1PIN MARK
1pin
+0.05
0.145 –0.03
0.475
0.08±0.05
0.75±0.05
0.9MAX
S
+0.05
0.22 –0.04
0.08 S
Direction of feed
0.65
Reel
(Unit : mm)
18/18
∗ Order quantity needs to be multiple of the minimum quantity.
Notice
Notes
No copying or reproduction of this document, in part or in whole, is permitted without the
consent of ROHM Co.,Ltd.
The content specified herein is subject to change for improvement without notice.
The content specified herein is for the purpose of introducing ROHM's products (hereinafter
"Products"). If you wish to use any such Product, please be sure to refer to the specifications,
which can be obtained from ROHM upon request.
Examples of application circuits, circuit constants and any other information contained herein
illustrate the standard usage and operations of the Products. The peripheral conditions must
be taken into account when designing circuits for mass production.
Great care was taken in ensuring the accuracy of the information specified in this document.
However, should you incur any damage arising from any inaccuracy or misprint of such
information, ROHM shall bear no responsibility for such damage.
The technical information specified herein is intended only to show the typical functions of and
examples of application circuits for the Products. ROHM does not grant you, explicitly or
implicitly, any license to use or exercise intellectual property or other rights held by ROHM and
other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the
use of such technical information.
The Products specified in this document are intended to be used with general-use electronic
equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices).
The Products specified in this document are not designed to be radiation tolerant.
While ROHM always makes efforts to enhance the quality and reliability of its Products, a
Product may fail or malfunction for a variety of reasons.
Please be sure to implement in your equipment using the Products safety measures to guard
against the possibility of physical injury, fire or any other damage caused in the event of the
failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM
shall bear no responsibility whatsoever for your use of any Product outside of the prescribed
scope or not in accordance with the instruction manual.
The Products are not designed or manufactured to be used with any equipment, device or
system which requires an extremely high level of reliability the failure or malfunction of which
may result in a direct threat to human life or create a risk of human injury (such as a medical
instrument, transportation equipment, aerospace machinery, nuclear-reactor controller,
fuel-controller or other safety device). ROHM shall bear no responsibility in any way for use of
any of the Products for the above special purposes. If a Product is intended to be used for any
such special purpose, please contact a ROHM sales representative before purchasing.
If you intend to export or ship overseas any Product or technology specified herein that may
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