BU7265G_1012 Datasheet, PDF (18/29 Pages) Rohm – Ultra Low Power CMOS Operational Amplifiers

BU7265G,BU7265SG,BU7205HFV,BU7205SHFV,BU7271G,BU7271SG,BU7245HFV,BU7245SHFV,
BU7411G,BU7411SG,BU7421G,BU7421SG,BU7475HFV,BU7475SHFV
Technical Note
○BU7421 family
10.0
BU7421 family
7 .5
5 .0
-40℃
2 .5
25℃
0 .0
-2 .5
105℃
85℃
-5 .0
-7 .5
-10.0
1
2
3
4
5
6
SUPPLY VOLTAGE [V]
Fig.128
Input Offset Voltage – Supply Voltage
(Vicm=VDD-1.2[V], VOUT=1.5[V])
160
BU7421 family
140
85℃ ^105℃
120
25℃
100
-40℃
80
10.0
BU7421 family
7.5
5.0
2.5
5.5V
0.0
-2.5
1.7V
3.0V
-5.0
-7.5
-10.0
-60 -30 0 30 60 90 120
AMBIENT TEMPERATURE [℃]
Fig.129
Input Offset Voltage – Ambient Temperature
(Vicm=VDD-1.2[V], VOUT=1.5[V])
160
BU7421 family
140
5.5V
120
100
1.7V
3.0V
80
15
BU7421 family
-40℃
10
25℃
5
85℃
0
105℃
-5
-10
-15
-1
0
1
2
3
INPUT VOLTAGE [ V]
Fig.130
Input Offset Voltage – Input Voltage
(VDD=3[V])
120
-40℃
100
BU7421 family
85℃
80
105℃
25℃
60
40
20
60
1
2
3
4
5
6
SUPPLY VOLTAGE [V]
Fig.131
Large Signal Voltage Gain
– Supply Voltage
60
-60 -30 0 30 60 90 120
AMBIENT TEMPERATURE [℃]
Fig.132
Large Signal Voltage Gain
– Ambient Temperature
0
1
2
3
4
5
6
SUPPLY VOLTAGE [ V]
Fig.133
Common Mode Rejection Ratio
– Supply Voltage
120
BU7421 family
3.0V
5.5V
100
80
1.7V
60
40
20
0
-60 -30 0 30 60 90 120
AMBIENT TEMPERATURE [℃]
Fig.134
Common Mode Rejection Ratio
– Ambient Temperature
80
BU7421 family
70
5.5V
60
3.0V
50
40
1.7V
30
20
10
0
-60 -30 0 30 60 90 120
AMBIENT TEMPERATURE [℃]
Fig.137
Slew Rate H-L – Ambient Temperature
140
BU7421 family
120
100
80
60
-60 -30 0 30 60 90 120
AMBIENT TEMPERATURE [℃]
Fig.135
Power Supply Rejection Ratio
– Ambient Temperature
1 00
Phase
BU7421 family ₂₀₀
80
1 50
60
Gain
1 00
40
50
20
0
1.E+00
1.E+01 1.E+02 1.E+03 1.E+04 1.E+05
FREQUENCY [ Hz]
Fig.138
Voltage Gain – Frequency
0
1.E+06
80
BU7421 family
70
5.5V
60
50
40
1.7V 3.0V
30
20
10
0
-60
-30 0 30 60 90 120
AMBIENT TEMPERATURE [℃]
Fig.136
Slew Rate L-H – Ambient Temperature
(*)The above data is ability value of sample, it is not guaranteed. BU7421G: -40[℃] ~ +85[℃] BU7421SG: -40[℃] ~ +105[℃]
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18/28
2010.12 - Rev.A