BU7251G Datasheet, PDF (5/19 Pages) Rohm – Comparators: Low Voltage CMOS

BU7251G,BU7251SG, BU7231G,BU7231SG,
BU7252F/FVM,BU7252S F/FVM,BU7232F/FVM,BU7232S F/FVM
Technical Note
○BU7251 family
10.0
BU7251 family
7.5
5.0
2.5
85℃
105℃
0.0
25℃
-40℃
-2.5
-5.0
-7.5
-10.0
1
2
3
4
5
6
SUPPLY VOLTAGE [V]
Fig. 13
Input Offset Voltage – Supply Voltage
(Vicm=VDD, Vout=0.1[V])
160
BU7251 family
10.0
BU7251 family
7.5
5.0
2.5
3.0V
0.0
5.5V
1.8V
-2.5
-5.0
-7.5
-10.0
-60 -30 0
30 60 90 120
AMBIENT TEMPERATURE [℃]
Fig. 14
Input Offset Voltage – Ambient Temperature
(Vicm=VDD, Vout=0.1[V])
160
BU7251 family
15
BU7251 family
10
5
85℃ 105℃
0
-40℃
25℃
-5
-10
-15
-1
0
1
2
3
4
INPUT VOLTAGE [V]
Fig. 15
Input offset voltage – Input Voltage
(VDD=3[V])
120
BU7251 family
140
120
105℃
85℃
100
80
-40℃
25℃
140
120
3.0V
1.8V
100
5.5V
80
100
85℃
25℃
80
60
105℃ ^-40℃
40
20
60
1
2
3
4
5
6
SUPPLY VOLTAGE [V]
Fig. 16
Large Signal Voltage Gain – Supply Voltage
120
BU7251 family
60
-60
-30 0 30 60 90 120
AMBIENT TEMPERATURE [℃]
Fig. 17
Large Signal Voltage Gain
– Ambient Temperature
120
BU7251 family
0
1
2
3
4
5
6
SUPPLY VOLTAGE [V]
Fig. 18
Common Mode rejection Ratio
– Supply Voltage(VDD=3[V])
BU7251 family
2.0
100
100
5.5V
80
80
3.0V
60
1.8V
60
40
40
20
20
1.5
1.8V
1.0
5.5V
3.0V
0.5
0
-60 -30
0
30 60 90 120
AMBIENT TEMPERATURE [℃]
Fig. 19
Common Mode Rejection Ratio –
Ambient Temperature
(VDD=3[V])
0.8
BU7251 family
0
-60 -30 0 30 60 90 120
AMBIENT TEMPERATURE [℃]
Fig. 20
Power Supply Rejection –
Ambient Temperature
0.0
-60 -30 0
30 60 90 120
AMBIENT TEMPERATURE [℃]
Fig. 21
Propagation Delay L-H –
Ambient Temperature
0.6
0.4
1.8V ^5.5V
0.2
3.0V
0.0
-60 -30
0
30 60 90 120
AMBIENT TEMPERATURE [℃]
Fig. 22
Propagation Delay H-L – Ambient Temperature
(*) The above date is ability value of sample, it is not guaranteed.
BU7251G：-40[℃] to+85[℃]
BU7251SG：-40[℃] to+105[℃]
5/18