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BU7231G-TR

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P19
1/18
www.rohm.com
2009.05 - Rev.A
© 2009 ROHM Co., Ltd. All rights reserved.
High speed
Single
BU7251 G
Dual
BU7252 F/FVM
(BU7252S F/FVM:105
℃)
Low power
Single
BU7231 G
Dual
(BU7231SG:105℃)
BU7232 F/FVM
(BU7232S F/FVM:105 ℃)
(BU7251SG:105
℃)
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
●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.
●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
1
2
3
4
8
7
5
OUT1
IN1-
IN1+
VSS
VDD
OUT2
IN2-
IN2+
CH1
- +
CH2
+ -
6
1
2
3
5
4
IN-
VSS
IN+
VDD
OUT
－
　
＋
SOP8SSOP5
MSOP8
BU7252F
BU7252SF
BU7232F
BU7232SF
BU7252FVM
BU7252SFVM
BU7232FVM
BU7232SFVM
BU7251G
BU7251SG
BU7231G
BU7231SG
No.09049EAT06
Technical Note
BU7251G,BU7251SG, BU7231G,BU7231SG,
BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM
2/18
●Absolute maximum ratings (Ta=25[℃])
Parameter Symbol
Rating
Unit
BU7251G,BU7252 F/FVM
BU7231G,BU7232 F/FVM
BU7251SG,BU7252S F/FVM
BU7231SG,BU7232S F/FVM
Supply Voltage VDD-VSS +7 V
Differential Input Voltage
(*1)
Vid VDD-VSS V
Input Common-mode voltage range Vicm (VSS-0.3) to VDD+0.3 V
Operating Temperature Topr -40 to+85 -40 to+105 ℃
Storage Temperature Tstg -55 to+125 ℃
Maximum junction Temperature Tjmax +125 ℃
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[℃])
Parameter Symbol
Temperature
range
Guaranteed Limit
Unit Condition
BU7251G,BU7251SG
Min. Typ. Max.
Input Offset Voltage
(*2)(*4)
Vio 25℃
- 1 11
mV -
Input Offset Current
(*2)
Iio 25℃
- 1 -
pA -
Input Bias Current
(*2)
Ib 25℃
- 1 -
pA -
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
(*4)
IDD
25℃
- 15 35
μA RL=∞
full range - - 50
Power supply rejection ratio
PSRR 25℃
- 80 -
dB -
Common-mode rejection ratio
CMRR 25℃
- 80 -
dB -
Output source current
(*3)
IOH 25℃
1 2 -
mA VDD-0.4
Output sink current
(*3)
IOL 25℃
3 6 -
mA VSS+0.4
High Level Output Voltage
(*4)
VOH 25℃
VDD-0.1 - -
V RL=10[kΩ]
Low Level Output Voltage
(*4)
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℃
- 0.55 -
μs CL=15pF 100mV over drive
Propagation delay H to L
TPHL 25℃
- 0.25 -
μs CL=15pF 100mV over drive
(*2) Abusolute values
(*3) 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.
(*4) 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[℃])
Parameter Symbol
Temperature
range
Guaranteed Limit
Unit Condition
BU7252 F/FVM
BU7252S F/FVM
Min. Typ. Max.
Input Offset Voltage
(*2)(*4)
Vio 25℃
- 1 11
mV -
Input Offset Current
(*2)
Iio 25℃
- 1 -
pA -
Input Bias Current
(*2)
Ib 25℃
- 1 -
pA -
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
(*4)
IDD
25℃
- 35 65
μA RL=∞
full range - - 80
Power supply rejection ratio
PSRR 25℃
- 80 -
dB -
Common-mode rejection ratio
CMRR 25℃
- 80 -
dB -
Output source current
(*3)
IOH 25℃
1 2 -
mA VDD-0.4
Output sink current
(*3)
IOL 25℃
3 6 -
mA VSS+0.4
High Level Output Voltage
(*4)
VOH 25℃
VDD-0.1 - -
V RL=10[kΩ]
Low Level Output Voltage
(*4)
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℃
- 0.55 -
μs CL=15pF 100mV over drive
Propagation delay H to L
TPHL 25℃
- 0.25 -
μs CL=15pF 100mV over drive
(*2) Abusolute values
(*3) 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.
(*4) Full range BU7251,BU7252：Ta=-40[℃] to +85[℃] BU7251S,BU7252S：Ta=-40[℃] to +105[℃]
Technical Note
BU7251G,BU7251SG, BU7231G,BU7231SG,
BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM
3/18
○BU7231 family (Unless otherwise specified VDD=+3[V], VSS=0[V], Ta=25[℃])
Parameter Symbol
Temperature
range
Guaranteed Limit
Unit Condition
BU7231G,BU7231SG
Min. Typ. Max.
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 -
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
μA RL=∞
full range - - 30
Power supply rejection ratio PSRR 25℃ - 80 - dB -
Common-mode rejection ratio CMRR 25℃ - 80 - dB -
Output source current
(*6)
IOH 25℃ 1 2 - mA VDD-0.4
Output sink current
(*6)
IOL 25℃ 3 6 - mA VSS+0.4
High Level Output Voltage
(*7)
VOH 25℃ VDD-0.1 - - V RL=10[kΩ]
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) Abusolute values
(*6) 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.
(*7) 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[℃])
Parameter Symbol
Temperature
range
Guaranteed Limit
Unit Condition
BU7232F/FVM
BU7232S F/FVM
Min. Typ. Max.
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 -
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℃ - 10 25
μA RL=∞
full range - - 50
Power supply rejection ratio PSRR 25℃ - 80 - dB -
Common-mode rejection ratio CMRR 25℃ - 80 - dB -
Output source current
(*6)
IOH 25℃ 1 2 - mA VDD-0.4
Output sink current
(*6)
IOL 25℃ 3 6 - mA VSS+0.4
High Level Output Voltage
(*7)
VOH 25℃ VDD-0.1 - - V RL=10[kΩ]
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) Abusolute values
(*6) 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.
(*7) Full range,BU7232：Ta=-40 [℃] to +85[℃] BU7232S：Ta=-40[℃] to +105[℃]
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P19

BU7231G-TR

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Operational Amplifiers - Op Amps 1.8-5.5V 1 CHAN 0.005mV 0.001nA
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