General-purpose Operational Amplifier / Comparator Series
Ultra Low Power CMOS Operational Amplifiers
・Input / Output Full Swing type BU7265G,BU7265SG,BU7271G,BU7271SG ・Input Ground Sense / Output Full Swing type BU7411G,BU7411SG,BU7421G,BU7421SG
●Description Ultra Low Power CMOS Op-Amp BU7265/BU7271 family (Input-Output Full Swing) and BU7411/BU7421 family (ground sense)are monolithic IC. Supply current is very small (BU7265 family, BU7411 family: 0.35[μA]),and VDD range is +1.6[V]~+5.5[V] (BU7411 family : single supply),so operable with low voltage. It’s suitable for applications of portable equipments and battery movements.
Input-Output Full Swing Ultra Low Power Low Power Ground Sense Ultra Low Power Low Power Single Single Single Single BU7265G
(BU7265SG:Operation guaranteed up to +105℃)
No.10049EAT14
BU7271G
(BU7271SG:Operation guaranteed up to +105℃)
BU7411G
(BU7411SG:Operation guaranteed up to +105℃)
BU7421G
(BU7421SG:Operation guaranteed up to +105℃)
●Features 1) Ultra Low Power 0.35[µA] ：BU7265 family ：BU7411 family 8.5[µA] ：BU7421 family 8.6[µA] ：BU7271 family 2) Operable with low voltage +1.8[V]~+5.5[V](single supply) ：BU7265 family ：BU7271 family +1.7[V]~+5.5[V](single supply) ：BU7421 family +1.6[V]~+5.5[V](single supply) ：BU7411 family
3) Low input bias current 1[pA] (Typ.) 4) Internal ESD protection Human body model(HBM) ±4000[V](Typ.) 5) Wide temperature range -40[℃]~+85[℃] (BU7265G,BU7271G,BU7411G,BU7421G) -40[℃]~+105[℃] (BU7265SG,BU7271SG,BU7411SG,BU7421SG) 6) Internal phase compensation 7) High large signal voltage gain
●Pin Assignments
IN+ 1 VSS 2 IN3 + -
5
VDD
4
OUT
SSOP5
BU7265G BU7265SG BU7271G BU7271SG BU7411G BU7411SG BU7421G BU7421SG
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1/17
2010.03 - Rev.A
BU7265G,BU7265SG,BU7271G,BU7271SG, BU7411G,BU7411SG,BU7421G,BU7421SG ●Absolute Maximum Ratings(Ta=25[℃]) Ratings Parameter Supply Voltage Differential Input Voltage (*1) Input Common-mode Voltage Range Operating Temperature Storage Temperature Maximum Junction Temperature
Note:
Technical Note
Symbol VDD-VSS Vid Vicm Topr Tstg Tjmax
BU7265G,BU7411G BU7271G,BU7421G
BU7265SG,BU7411SG BU7271SG,BU7421SG
Unit V V V ℃ ℃ ℃
+7 VDD-VSS (VSS-0.3)~VDD+0.3 -40~+85 -40~+105 -55~+125 +125
(*1)
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 deteriorationof characteristics. The voltage difference between inverting input and non-inverting input is the differential input voltage. Then input terminal voltage is set to more than VSS.
●Electrical characteristics：Input-Output Full Swing ○BU7265 family, BU7271 family (Unless otherwise specified VDD=+3[V], VSS=0[V]) Guaranteed limit Parameter Symbol Temperature Range Min. Input Offset Voltage (*2) Input (*2) Offset Current Input (*2) Bias Current Supply Current (*3) High Level Output Voltage Low Level Output Voltage Large Signal Voltage Gain Input Common-mode Voltage Range Common-mode Rejection Ratio Power Supply Rejection Ratio Output Source Current (*4) Output Sink Current (*4) Slew Rate Gain Bandwidth Product Phase Margin
(*2) (*3) (*4)
BU7265G BU7265SG Typ. 1 1 1 0.35 95 60 80 2.4 4 2.4 4 60° Max. 8.5 0.9 1.3 VSS+0.1 3 Min. -
BU7271G BU7271SG Typ. 1 1 1 8.6 100 60 80 4 8 50 90 60° Max. 8 17 25 -
Unit
Condition
Vio Iio Ib IDD VOH VOL AV Vicm CMRR PSRR IOH IOL SR FT θ
25℃ 25℃ 25℃ 25℃ Full range 25℃ 25℃ 25℃ 25℃ 25℃ 25℃ 25℃ 25℃ 25℃ 25℃ 25℃
VDD-0.1 60 0 45 60 1 2 -
mV pA pA µA V
RL=∞, AV=0[dB] VIN=1.5[V] RL=10[kΩ] RL=10[kΩ]
VDD-0.1 70 0 45 60 2 4 -
VSS+0.1 V 3 -
dB RL=10[kΩ] V dB dB mA VDD-0.4[V] mA VSS+0.4[V] V/ms CL=25[pF] kHz CL=25[pF], AV=40[dB] CL=25[pF], AV=40[dB] VSS~VDD -
Absolute value Full range BU7265,BU7271：Ta=-40[℃]~+85[℃] BU7265S,BU7271S：Ta=-40[℃]~+105[℃] Under the high temperature environment, consider the power dissipation of IC when selecting the output current. When the terminal short circuits are continuously output, the output current is reduced to climb to the temperature inside IC.
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2/17
2010.03 - Rev.A
BU7265G,BU7265SG,BU7271G,BU7271SG, BU7411G,BU7411SG,BU7421G,BU7421SG ●Electrical characteristics：Ground Sense ○BU7411 family, BU7421 family(Unless otherwise specified VDD=+3[V], VSS=0[V]) Guaranteed limit Temperature BU7411G BU7421G Parameter Symbol Range BU7411SG BU7421SG Min. Typ. Max. Min. Typ. Max. Input Offset Voltage (*5) Input Offset Current (*5) Input Bias Current(*5) Supply Current (*6) High Level Output Voltage Low Level Output Voltage Large Signal Voltage Gain Input Common-mode Voltage Range Common-mode Rejection Ratio Power Supply Rejection Ratio Output (*7) Source Current Output Sink Current (*7) Slew Rate Gain Bandwidth Product Phase Margin
(*5) (*6) (*7)
Technical Note
Unit
Condition
Vio Iio Ib IDD VOH VOL AV Vicm CMRR PSRR IOH IOL SR FT θ
25℃ 25℃ 25℃ 25℃ Full range 25℃ 25℃ 25℃ 25℃ 25℃ 25℃ 25℃ 25℃ 25℃ 25℃ 25℃
VDD-0.1 60 0 45 60 1 2 -
1 1 1 0.35 95 60 80 2.4 4 2.4 4 60°
8 0.8 1.3 VSS+0.1 2 -
VDD-0.1 70 0 45 60 2 4 -
1 1 1 8.5 100 60 80 4 8 50 90 60°
6 17 25 -
mV pA pA RL=∞, AV=0[dB] µA BU7411:VIN=1.0[V] BU7421:VIN=0.9[V] V RL=10[kΩ] RL=10[kΩ]
VSS+0.1 V 1.8 -
dB RL=10[kΩ] V BU7411: VSS~VDD-1.0[V] BU7421: VSS~VDD-1.2[V]
dB dB mA VDD-0.4[V] mA VSS+0.4[V] V/ms CL=25[pF] kHz CL=25[pF], AV=40[dB] CL=25[pF], AV=40[dB]
Absolute value Full range BU7411,BU7421：Ta=-40[℃]~+85[℃] BU7411S,BU7421S：Ta=-40[℃]~+105[℃] Under the high temperature environment, consider the power dissipation of IC when selecting the output current. When the terminal short circuits are continuously output, the output current is reduced to climb to the temperature inside IC.
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
3/17
2010.03 - Rev.A
BU7265G,BU7265SG,BU7271G,BU7271SG, BU7411G,BU7411SG,BU7421G,BU7421SG ●Example of electrical characteristics ○BU7265 family BU7265 family
800 POWER DISSIPATION [mW] POWER DISSIPATION [mW]
Technical Note
800
BU7265 family
0.8
105℃
BU7265 family
SUPPLY CURRENT [μ A]
600
BU7265G
600
BU7265SG
0.6
85℃
400
400
0.4
-40℃
200
200
0.2
25℃
0 0 50
85
0 100 150 0 50
105 100
0.0 150 0 1 2 3 4 5 6 SUPPLY VOLTAGE [V]
AMBIENT TEMPERATURE [°C]
AMBIENT TEMPERATURE [°C]
Fig.1 Derating curve
Fig.2 Derating curve
Fig.3 Supply Current – Supply Voltage
6 OUTPUT VOLTAGE HIGH [V]
BU7265 family
1.0
BU7265 family
6 OUTPUT VOLTAGE HIGH [V]
BU7265 family
SUPPLY CURRENT [μ A]
0.8
5.5V
105℃
4
85℃ 25℃
4
3.0V
5.5V
0.6
0.4
2
-40℃
2
0.2
1.8V
3.0V
1.8V
0.0 -60
0 -30 0 30 60 90 120 0 1 2 3 4 5 6 AMBIENT TEMPERATURE [°C] SUPPLY VOLTAGE [V]
0 -60
-30
0
30
60
90
120
AMBIENT TEMPERATURE [°C]
Fig.4 Supply Current – Ambient Temperature
20 OUTPUT VOLTAGE LOW [mV]
BU7265 family
Fig.5Output Voltage High – Supply Voltage (RL=10[kΩ])
20 OUTPUT VOLTAGE LOW [mV] V] OUTPUT VOLTAGE LOW [m
BU7265 family
Fig.6 Output Voltage High – Ambient Temperature (RL=10[kΩ])
10 OUTPUT SOURCE CURRENT [mA]
-40℃ 25℃ BU7265 family
105℃ 85℃
15
16
5.5V
8
12
1.8V 3.0V
6
10
8
4
105℃ 85℃
5
-40℃
25℃
4
2
0 0 1 2 3 4 5 6 SUPPLY VOLTAGE [V]
0 -60
0 -30 0 30 60 90 120 0 1 2 3 AMBIENT TEMPERATURE [°C] OUTPUT VOLTAGE [V]
Fig.7 Output Voltage Low – Supply Voltage (RL=10[kΩ])
10 OUTPUT SOURCE CURRENT [mA]
BU7265 family
Fig.8 Output Voltage Low – Ambient Temperature (RL=10[kΩ])
20 OUTPUT SINK CURRENT [mA]
-40℃ 25℃ BU7265 family
Fig.9 Output Source Current – Output Voltage (VDD=3.0[V])
20 OUTPUT SINK CURRENT [mA]
BU7265 family
8
15
16
6
5.5V
12
10
5.5V 3.0V
4
3.0V
8
1.8V
2
5
85℃ 105℃
1.8V
4
0 -60
0 -30 0 30 60 90 120 0 1 2 3 AMBIENT TEMPERATURE [°C] OUTPUT VOLTAGE [V]
0 -60
-30
0
30
60
90
120
AMBIENT TEMPERATURE [°C]
Fig.10 Output Source Current – Ambient Temperature (VOUT=VDD-0.4[V])
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Fig.11 Output Sink Current – Output Voltage (VDD=3[V])
Fig.12 Output Sink Current – Ambient Temperature (VOUT=VSS+0.4[V])
(*)The above data is ability value of sample, it is not guaranteed.BU7265G：-40[℃]～+85[℃]
BU7265SG：-40[℃]～+105[℃]
4/17
2010.03 - Rev.A
BU7265G,BU7265SG,BU7271G,BU7271SG, BU7411G,BU7411SG,BU7421G,BU7421SG ○BU7265 family
Technical Note
10.0 7.5
BU7265 family
10.0
INPUT OFFSET VOLTAGE [mV]
BU7265 family
15
INPUT OFFSET VOLTAGE [mV]
BU7265 family
7.5 5.0 2.5 0.0 -2.5 -5.0 -7.5 -10.0 0 1 2 3 4 5 6 SUPPLY VOLTAGE [V]
105℃ 85℃ -40℃
INPUT OFFSET VOLTAGE [mV]
10 5
25℃ -40℃
25℃
5.0 2.5 0.0 -2.5 -5.0 -7.5 -10.0 -60
3.0V 1.8V 5.5V
0 -5 -10 -15
85℃ 105℃
-30
0
30
60
90
120
-1
0
1
2
3
4
AMBIENT TEMPERATURE [°C]
INPUT VOLTAGE [V]
Fig.13 Input Offset Voltage – Supply Voltage (Vicm=VDD, VOUT=1.5[V])
160
LARGE SIGNAL VOLTAGE GAIN [dB]
105℃ 85℃ BU7265 family
Fig.14 Input Offset Voltage – Ambient Temperature (Vicm=VDD, VOUT=1.5[V])
160
LARGE SIGNAL VOLTAGE GAIN [dB]
5.5V BU7265 family
Fig.15 Input Offset Voltage – Input Voltage (VDD=3[V])
120
COMMON MODE REJECTION RATIO [dB]
BU7265 family -40℃
140
140
100
25℃
80 60 40 20 0
85℃
120
120
105℃
100
25℃ -40℃
100
3.0V 1.8V
80
80
60 0 1 2 3 4 5 6 SUPPLY VOLTAGE [V]
60 -60
-30
0
30
60
90
120
0
1
2
3
4
5
6
AMBIENT TEMPERATURE [°C]
SUPPLY VOLTAGE [V]
Fig.16 Large Signal Voltage Gain – Supply Voltage
120
COMMON MODE REJECTION RATIO [dB]
5.5V BU7265 family
Fig.17 Large Signal Voltage Gain – Ambient Temperature
120
POWER SUPPLY REJECTION RATIO [dB]
BU7265 family
Fig.18 Common Mode Rejection Ratio – Supply Voltage
6 5
SLEW RATE L-H [V/ms]
BU7265 family
100 80 60
1.8V 3.0V
100 80 60 40 20 0 -60
4
5.5V
3 2 1
1.8V
40 20 0 -60
3.0V
-30
0
30
60
90
120
-30
0
30
60
90
120
0 -60
-30
0
30
60
90
120
AMBIENT TEMPERATURE [°C]
AMBIENT TEMPERATURE [°C]
AMBIENT TEMPERATURE [°C]
Fig.19 Common Mode Rejection Ratio – Ambient Temperature
6 5
SLEW RATE H-L [V/ms]
BU7265 family
Fig.20 Power Supply Rejection Ratio – Ambient Temperature
100
Phase
BU7265 family
Fig.21 Slew Rate L-H – Ambient Temperature
200
80
150
PHASE [deg]
4
5.5V
3 2
3.0V
GAIN [dB]
60
Gain
100
40
1
1.8V
20
50
0 -60
-30
0
30
60
90
120
0 0 1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 FREQUENCY [Hz]
AMBIENT TEMPERATURE [°C]
Fig.22 Slew Rate H-L – Ambient Temperature
Fig.23 Gain – Frequency
(*)The above data is ability value of sample, it is not guaranteed.BU7265G：-40[℃]~+85[℃] BU7265SG：-40[℃]~+105[℃]
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5/17
2010.03 - Rev.A
BU7265G,BU7265SG,BU7271G,BU7271SG, BU7411G,BU7411SG,BU7421G,BU7421SG ○BU7271 family
Technical Note
800
BU7271 family
800 POWER DISSIPATION [mW]
BU7271 family
16
85℃ 105℃
BU7271 family
POWER DISSIPATION [mW]
600
BU7271G
SUPPLY CURRENT [μ A]
600
BU7271SG
12
400
400
8
25℃ -40℃
200
200
4
0 0 50
85 100
0 150 0 50
105 100
0 150 0 1 2 3 4 5 6 SUPPLY VOLTAGE [V]
AMBIENT TEMPERATURE [°C]
AMBIENT TEMPERATURE [°C]
Fig.24 Derating curve
Fig.25 Derating curve
Fig.26 Supply Current – Supply Voltage
6 OUTPUT VOLTAGE HIGH [V]
BU7271 family
16
5.5V 3.0V
BU7271 family
6 OUTPUT VOLTAGE HIGH [V]
BU7271 family
SUPPLY CURRENT [μ A]
12
105℃
4
85℃ 25℃ -40℃
5.5V
4
3.0V
8
1.8V
1.8V
2
2
4
0 -60
0 -30 0 30 60 90 120 0 1 2 3 4 5 6 AMBIENT TEMPERATURE [°C] SUPPLY VOLTAGE [V]
0 -60
-30
0
30
60
90
120
AMBIENT TEMPERATURE [°C]
Fig.27 Supply Current – Ambient Temperature
12 OUTPUT VOLTAGE [mV] OUTPUT VOLTAGE LOW [mV]
BU7271 family
Fig.28 Output Voltage High – Supply Voltage (RL=10[kΩ])
12 OUTPUT VOLTAGE LOW [mV] OUTPUT VOLTAGE LOW [mV]
BU7271 family
Fig.29 Output Voltage High – Ambient Temperature (RL=10[kΩ])
18 OUTPUT SOURCE CURRENT [mA]
-40℃ 25℃ BU7271 family
105℃
8
85℃
8
5.5V
12
85℃
4
25℃ -40℃
4
3.0V 1.8V
6
105℃
0 0 1 2 3 4 5 6 SUPPLY VOLTAGE [V]
0 -60
0 -30 0 30 60 90 120 0 1 2 3 AMBIENT TEMPERATURE [°C] OUTPUT VOLTAGE [V]
Fig.30 Output Voltage Low – Supply Voltage(RL=10[kΩ])
20 OUTPUT SOURCE CURRENT [mA]
BU7271 family
Fig.31 Output Voltage Low – Ambient Temperature (RL=10[kΩ])
40 OUTPUT SINK CURRENT [mA]
-40℃ BU7271 family
Fig.32 Output Source Current – Output Voltage (VDD=3.0[V])
40 OUTPUT SINK CURRENT [mA]
BU7271 family
15
30
25℃
30
10
3.0V
5.5V
20
20
5.5V 3.0V
5
1.8V
10
105℃
85℃
10
1.8V
0 -60
0 -30 0 30 60 90 120 0 1 2 3 AMBIENT TEMPERATURE [°C] OUTPUT VOLTAGE [V]
0 -60
-30
0
30
60
90
120
AMBIENT TEMPERATURE [°C]
Fig.33 Output Source Current – Ambient Temperature (VOUT=VDD-0.4[V])
Fig.34 Output Sink Current – Output Voltage (VDD=3[V])
Fig.35 Output Sink Current – Ambient Temperature (VOUT=VSS+0.4[V])
(*) The above data is ability value of sample, it is not guaranteed.BU7271G：-40[℃]~+85[℃] BU7271SG：-40[℃]~+105[℃]
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
6/17
2010.03 - Rev.A
BU7265G,BU7265SG,BU7271G,BU7271SG, BU7411G,BU7411SG,BU7421G,BU7421SG ○BU7271 family
10.0 7.5
INPUT OFFSET VOLTAGE [mV] INPUT OFFSET VOLTAGE [mV]
Technical Note
10.0 7.5 5.0 2.5 0.0 -2.5 -5.0 -7.5 -10.0 -60
1.8V 3.0V BU7271 family
BU7271 family
15
INPUT OFFSET VOLTAGE [mV]
BU7271 family
10 5 0 -5 -10 -15
85℃ 105℃ -40℃ 25℃
5.0 2.5 0.0 -2.5 -5.0 -7.5 -10.0 0 1 2 3 4 5 6 SUPPLY VOLTAGE [V]
-40℃ 25℃
5.5V
105℃
85℃
-30
0
30
60
90
120
-1
0
1
2
3
4
AMBIENT TEMPERATURE [°C]
INPUT VOLTAGE [V]
Fig.36 Input Offset Voltage – Supply Voltage (Vicm=VDD, VOUT=1.5[V])
160
LARGE SIGNAL VOLTAGE GAIN [dB]
BU7271 family
Fig.37 Input Offset Voltage – Ambient Temperature (Vicm=VDD, VOUT=1.5[V])
160
LARGE SIGNAL VOLTAGE GAIN [dB]
BU7271 family
Fig.38 Input Offset Voltage – Input Voltage (VDD=3[V])
120
COMMON MODE REJECTION RATIO [dB]
BU7271 family 105℃
140
85℃
105℃
140
5.5V
100 80
85℃
120
120
-40℃
25℃
60 40 20 0
100
25℃
-40℃
100
3.0V 1.8V
80
80
60 0 1 2 3 4 5 6 SUPPLY VOLTAGE [V]
60 -60
-30
0
30
60
90
120
0
1
2
3
4
5
6
AMBIENT TEMPERATURE [°C]
SUPPLY VOLTAGE [V]
Fig.39 Large Signal Voltage Gain – Supply Voltage
120
COMMON MODE REJECTION RATIO [dB]
5.5V BU7271 family
Fig.40 Large Signal Voltage Gain – Ambient Temperature
120
POWER SUPPLY REJECTION RATIO [dB]
BU7271 family
Fig.41 Common Mode Rejection Ratio – Supply Voltage
80
5.5V BU7271 family
100 80
3.0V 1.8V
100 80 60 40 20 0 -60 0 -30 0 30 60 90 120 -60 -30 0
SLEW RATE L-H [V/ms]
60
60 40 20 0 -60
40
3.0V
1.8V
20
-30
0
30
60
90
120
30
60
90
120
AMBIENT TEMPERATURE [°C]
AMBIENT TEMPERATURE [°C]
AMBIENT TEMPERATURE [°C]
Fig.42 Common Mode Rejection Ratio – Ambient Temperature
80
BU7271 family 5.5V
Fig.43 Power Supply Rejection Ratio – Ambient Temperature
100
BU7271 family
Fig.44 Slew Rate L-H – Ambient Temperature
200
Phase
80
3.0V
SLEW RATE H-L [V/ms]
60
GAIN [dB]
150
PHASE [deg]
60
40
1.8V
40
Gain
100
20 20 0 -60 -30 0 30 60 90 120 AMBIENT TEMPERATURE [°C]
50
0 0 1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 FREQUENCY [Hz]
Fig.45 Slew Rate H-L – Ambient Temperature
Fig.46 Gain – Frequency
(*)The above data is ability value of sample, it is not guaranteed.BU7271G：-40[℃]~+85[℃] BU7271SG：-40[℃]~+105[℃]
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
7/17
2010.03 - Rev.A
BU7265G,BU7265SG,BU7271G,BU7271SG, BU7411G,BU7411SG,BU7421G,BU7421SG ○BU7411 family
BU7411 family
Technical Note
800 0.8
105℃ BU7411 family
800 POWER DISSIPATION [mW ]
BU7411 family
POWER DISSIPATION [mW]
600
BU7411G
600
BU7411SG
SUPPLY CURRENT [μ A]
0.6
85℃
400
400
0.4
200
200
0.2
-40℃
25℃
0 0 50
85 100
0 150 0 50
105 100
0.0 150 0 1 2 3 4 5 6 SUPPLY VOLTAGE [V]
AMBIENT TEMPERATURE [°C]
AMBIENT TEMPERATURE [°C]
Fig.47 Derating curve
Fig.48 Derating curve
Fig.49 Supply Current – Supply Voltage
6 OUTPUT VOLTAGE HIGH [V]
BU7411 family
0.8
5.5V
BU7411 family
6 OUTPUT VOLTAGE HIGH [V]
BU7411 family
SUPPLY CURRENT [μ A]
0.6
3.0V
4
85℃
105℃
4
5.5V 3.0V
0.4
25℃
2
-40℃
1.6V
2
0.2
1.6V
0.0 -60
0 -30 0 30 60 90 120 0 1 2 3 4 5 6 AMBIENT TEMPERATURE [°C] SUPPLY VOLTAGE [V]
0 -60
-30
0
30
60
90
120
AMBIENT TEMPERATURE [°C]
Fig.50 Supply Current – Ambient Temperature
30 OUTPUT VOLTAGE [mV] OUTPUT VOLTAGE LOW [mV]
BU7411 family
Fig.51 Output Voltage High – Supply Voltage (RL=10[kΩ])
30 OUTPUT VOLTAGE LOW [mV] OUTPUT VOLTAGE LOW [mV]
BU7411 family
Fig.52 Output Voltage High – Ambient Temperature(RL=10[kΩ])
10 OUTPUT SOURCE CURRENT [mA]
25℃ -40℃ BU7411 family
8
20
85℃
105℃
20
5.5V 3.0V
6
4
105℃
10
25℃ -40℃
10
1.6V
85℃
2
0 0 1 2 3 4 5 6 SUPPLY VOLTAGE [V]
0 -60
0 -30 0 30 60 90 120 0 1 2 3 AMBIENT TEMPERATURE [°C] OUTPUT VOLTAGE [V]
Fig.53 Output Voltage Low – Supply Voltage (RL=10[kΩ])
10 OUTPUT SOURCE CURRENT [mA]
BU7411 family
Fig.54 Output Voltage Low – Ambient Temperature (RL=10[kΩ])
20
-40℃ BU7411 family
Fig.55 Output Source Current – Output Voltage (VDD=3.0[V])
20 OUTPUT SINK CURRENT [mA]
BU7411 family
8
OUTPUT SINK CURRENT [mA]
15
25℃
15
6
5.5V
10
85℃
10
3.0V
5.5V
4
3.0V
2
5
105℃
5
1.6V
1.6V
0 -60
0 -30 0 30 60 90 120 0 1 2 3 AMBIENT TEMPERATURE [°C] OUTPUT VOLTAGE [V]
0 -60
-30
0
30
60
90
120
AMBIENT TEMPERATURE [°C]
Fig.56 Output Source Current – Ambient Temperature (VOUT=VDD-0.4[V])
Fig.57 Output Sink Current – Output Voltage (VDD=3[V])
Fig.58 Output Sink Current – Ambient Temperature (VOUT=VSS+0.4[V])
(*)The above data is ability value of sample, it is not guaranteed.BU7411G：-40[℃]~+85[℃] BU7411SG：-40[℃]~+105[℃]
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8/17
2010.03 - Rev.A
BU7265G,BU7265SG,BU7271G,BU7271SG, BU7411G,BU7411SG,BU7421G,BU7421SG ○BU7411 family
Technical Note
10.0 7.5
BU7411 family
10.0
INPUT OFFSET VOLTAGE [mV]
BU7411 family
15
INPUT OFFSET VOLTAGE [mV]
BU7411 family
7.5 5.0
-40℃ 25℃
INPUT OFFSET VOLTAGE [mV]
10 5 0 -5 -10 -15
-40℃ 25℃ 85℃ 105℃
5.0
5.5V
2.5 0.0 -2.5 -5.0 -7.5 -10.0 0 1 2 3 4 5 6 SUPPLY VOLTAGE [V]
105℃ 85℃
2.5 0.0 -2.5 -5.0 -7.5 -10.0 -60
3.0V 1.6V
-30
0
30
60
90
120
-1
0
1 INPUT VOLTAGE [V]
2
3
AMBIENT TEMPERATURE [°C]
Fig.59 Input Offset Voltage – Supply Voltage (Vicm=VDD-1[V], VOUT=1.5[V])
160
LARGE SIGNAL VOLTAGE GAIN [dB]
BU7411 family
Fig.60 Input Offset Voltage – Ambient Temperature (Vicm=VDD-1[V], VOUT=1.5[V])
160
LARGE SIGNAL VOLTAGE GAIN [dB]
BU7411 family
Fig.61 Input Offset Voltage – Input Voltage (VDD=3[V])
120
COMMON MODE REJECTION RATIO [dB]
85℃ BU7411 family 105℃
140
-40℃ 25℃
140
3.0V 5.5V
100 80 60 40 20 0
25℃ -40℃
120
120
100
105℃
100
1.6V
80
85℃
80
60 0 1 2 3 4 5 6 SUPPLY VOLTAGE [V]
60 -60
-30
0
30
60
90
120
0
1
2
3
4
5
6
AMBIENT TEMPERATURE [°C]
SUPPLY VOLTAGE [V]
Fig.62 Large Signal Voltage Gain – Supply Voltage
120
COMMON MODE REJECTION RATIO [dB]
BU7411 family
Fig.63 Large Signal Voltage Gain – Ambient Temperature
120
POWER SUPPLY REJECTION RATIO [dB]
BU7411 family
Fig.64 Common Mode Rejection Ratio – Supply Voltage
4
5.5V BU7411 family
100 80 60 40 20 0 -60
1.6V 3.0V 5.5V
100 80 60 40 20 0 -60 0 -60
SLEW RATE L-H [V/ms]
3
2
1
1.6V
3.0V
-30
0
30
60
90
120
-30
0
30
60
90
120
-30
0
30
60
90
120
AMBIENT TEMPERATURE [°C]
AMBIENT TEMPERATURE [°C]
AMBIENT TEMPERATURE [°C]
Fig.65 Common Mode Rejection Ratio – Ambient Temperature
4
5.5V BU7411 family
Fig.66 Power Supply Rejection Ratio – Ambient Temperature
100
Phase
BU7411 family
Fig.67 Slew Rate L-H – Ambient Temperature
200
SLEW RATE H-L [V/ms]
3
GAIN [dB]
80
150
PHASE [deg]
60 100 40
Gain
2
3.0V
1
1.6V
20 0 -60
50
-30
0
30
60
90
120
0 0 1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 FREQUENCY [Hz]
AMBIENT TEMPERATURE [°C]
Fig.68 Slew Rate H-L – Ambient Temperature
Fig.69 Gain – Frequency
(*)The above data is ability value of sample, it is not guaranteed. BU7411G：-40[℃]~+85[℃] BU7411SG：-40[℃]~+105[℃]
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9/17
2010.03 - Rev.A
BU7265G,BU7265SG,BU7271G,BU7271SG, BU7411G,BU7411SG,BU7421G,BU7421SG ○BU7421 family
Technical Note
800
BU7421 family
800 POWER DISSIPATION [mW] [mW
BU7421 family
20
BU7421 family
POWER DISSIPATION [mW] [mW
600
BU7421G
600
BU7421SG
SUPPLY CURRENT [μ A]
15
85℃ 105℃
[mW]
400
400
10
200
200
5
-40℃
25℃
0 0 50
85 100
0 150 0 50 100
105
0 150 0 1 2 3 4 5 6 SUPPLY VOLTAGE [V]
AMBIENT TEMPERATURE [°C]
AMBIENT TEMPERATURE [°C]
Fig.70 Derating curve
Fig.71 Derating curve
Fig.72 Supply Current – Supply Voltage
6 OUTPUT VOLTAGE HIGH [V]
BU7421 family
20
BU7421 family
6 OUTPUT VOLTAGE HIGH [V]
BU7421 family
SUPPLY CURRENT [μ A]
15
5.5V
105℃
5.5V
4
85℃ 25℃
4
3.0V
10
5
3.0V 1.7V
2
-40℃
2
1.7V
0 -60
0 -30 0 30 60 90 120 0 1 2 3 4 5 6 AMBIENT TEMPERATURE [°C] SUPPLY VOLTAGE [V]
0 -60
-30
0
30
60
90
120
AMBIENT TEMPERATURE [°C]
Fig.73 Supply Current – Ambient Temperature
12 OUTPUT VOLTAGE LOW [mV] OUTPUT VOLTAGE LOW [mV]
BU7421 family
Fig.74 Output Voltage High – Supply Voltage (RL=10[kΩ])
12 OUTPUT VOLTAGE LOW [mV] OUTPUT VOLTAGE LOW [mV]
BU7421 family
Fig.75 Output Voltage High – Ambient Temperature (RL=10[kΩ])
20 OUTPUT SOURCE CURRENT [mA]
25℃ -40℃ BU7421 family
105℃
9
85℃
9
3.0V
5.5V
15
6
6
10
105℃ 85℃
3
25℃
3
-40℃
1.7V
5
0 0 1 2 3 4 5 6 SUPPLY VOLTAGE [V]
0 -60
0 -30 0 30 60 90 120 0 1 2 3 AMBIENT TEMPERATURE [°C] OUTPUT VOLTAGE [V]
Fig.76 Output Voltage Low – Supply Voltage (RL=10[kΩ])
20 OUTPUT SOURCE CURRENT [mA]
BU7421 family
Fig.77 Output Voltage Low – Ambient Temperature (RL=10[kΩ])
40 OUTPUT SINK CURRENT [mA]
25℃ BU7421 family
Fig.78 Output Source Current – Output Voltage (VDD=3.0[V])
40 OUTPUT SINK CURRENT [mA]
BU7421 family
-40℃
15
5.5V
30
30
3.0V 5.5V
10
3.0V
20
20
1.7V
5
1.7V
10
105℃
85℃
10
0 -60
0 -30 0 30 60 90 120 0 1 2 3 AMBIENT TEMPERATURE [°C] OUTPUT VOLTAGE [V]
0 -60
-30
0
30
60
90
120
AMBIENT TEMPERATURE [°C]
Fig.79 Output Source Current – Ambient Temperature (VOUT=VDD-0.4[V])
Fig.80 Output Sink Current – Output Voltage (VDD=3[V])
Fig.81 Output Sink Current – Ambient Temperature (VOUT=VSS+0.4[V])
(*)The above data is ability value of sample, it is not guaranteed.BU7421G：-40[℃]~+85[℃] BU7421SG：-40[℃]~+105[℃]
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
10/17
2010.03 - Rev.A
BU7265G,BU7265SG,BU7271G,BU7271SG, BU7411G,BU7411SG,BU7421G,BU7421SG ○BU7421 family
Technical Note
10.0 7.5
BU7421 family
10.0
INPUT OFFSET VOLTAGE [mV]
BU7421 family
15
INPUT OFFSET VOLTAGE [mV]
BU7421 family
7.5 5.0 2.5 0.0 -2.5 -5.0 -7.5 -10.0 0 1 2 3 4 5 6 SUPPLY VOLTAGE [V]
105℃ 85℃ -40℃ 25℃
INPUT OFFSET VOLTAGE [mV]
10 5
85℃ 105℃
5.0 2.5 0.0 -2.5 -5.0 -7.5 -10.0 -60
3.0V 1.7V 5.5V
0
-40℃ 25℃
-5 -10 -15
-30
0
30
60
90
120
-1
0
1 INPUT VOLTAGE [V]
2
3
AMBIENT TEMPERATURE [°C]
Fig.82 Input Offset Voltage – Supply Voltage (Vicm=VDD-1.2[V], VOUT=1.5[V])
160
LARGE SIGNAL VOLTAGE GAIN [dB]
BU7421 family
Fig.83 Input Offset Voltage – Ambient Temperature (Vicm=VDD-1.2[V], VOUT=1.5[V])
160
LARGE SIGNAL VOLTAGE GAIN [dB]
5.5V BU7421 family
Fig.84 Input Offset Voltage – Input Voltage (VDD=3[V])
120
COMMON MODE REJECTION RATIO [dB]
-40℃ 25℃ BU7421 family
105℃
140
85℃
140
100 80
105℃ 85℃
120
120
60 40 20 0
100
25℃
100
3.0V 1.7V
-40℃
80
80
60 0 1 2 3 4 5 6 SUPPLY VOLTAGE [V]
60 -60
-30
0
30
60
90
120
0
1
2
3
4
5
6
AMBIENT TEMPERATURE [°C]
SUPPLY VOLTAGE [V]
Fig.85 Large Signal Voltage Gain – Supply Voltage
120
COMMON MODE REJECTION RATIO [dB]
5.5V BU7421 family
Fig.86 Large Signal Voltage Gain – Ambient Temperature
120
POWER SUPPLY REJECTION RATIO [dB]
BU7421 family
Fig.87 Common Mode Rejection Ratio – Supply Voltage
80
5.5V BU7421 family
100 80
3.0V 1.7V
100 80 60 40 20 0 -60 0 -30 0 30 60 90 120 -60 -30 0
SLEW RATE L-H [V/ms]
60
60 40 20 0 -60
40
3.0V 1.7V
20
-30
0
30
60
90
120
30
60
90
120
AMBIENT TEMPERATURE [°C]
AMBIENT TEMPERATURE [°C]
AMBIENT TEMPERATURE [°C]
Fig.88 Common Mode Rejection Ratio – Ambient Temperature
80
5.5V BU7421 family
Fig.89 Power Supply Rejection Ratio – Ambient Temperature
100
BU7421 family
Fig.90 Slew Rate L-H – Ambient Temperature
200
Phase
SLEW RATE H-L [V/ms]
60
GAIN [dB]
80
150
PHASE [deg]
60 100 40
40
3.0V 1.7V
Gain
50
20 20 0 -60 -30 0 30 60 90 120 AMBIENT TEMPERATURE [°C]
0 0 1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 FREQUENCY [Hz]
Fig.91 Slew Rate H-L – Ambient Temperature
Fig.92 Gain – Frequency
(*)The above data is ability value of sample, it is not guaranteed. BU7421G：-40[℃]~+85[℃] BU7421SG：-40[℃]~+105[℃]
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
11/17
2010.03 - Rev.A
BU7265G,BU7265SG,BU7271G,BU7271SG, BU7411G,BU7411SG,BU7421G,BU7421SG ●Schematic Diagram
VDD Vbias VDD Vbias
Technical Note
IN+ IN+ INclass AB control OUT INclass AB control OUT
Vbias VSS VSS
Vbias
○Input-Output Full Swing BU7265/BU7271 family Fig.93 Schematic Diagram ●Test circuit1 NULL method VDD,VSS,EK,Vicm Unit:[V]
Parameter Input Offset Voltage Large Signal Voltage Gain Common-mode Rejection Ratio (Input Common-mode Voltage Range) VF VF1 VF2 VF3 VF4 VF5 BU7265/ BU7271 Power Supply Rejection Ratio VF6 BU7421 BU7411 VF7 S1 ON ON ON ON ON ON ON S2 ON ON ON ON ON ON ON S3 OFF ON OFF OFF OFF OFF OFF VDD VSS 3 3 3 1.8 1.7 1.6 5.5 0 0 0 0
○Ground Sense BU7411/BU7421 family
EK -1.5 -0.5 -2.5 -1.5
Vicm Calculation BU7265 BU7411 BU7421 /BU7271 3 1.5 0 3 2 1 0 2 1.8 0.9 0 1.8 1 2 3
-0.9
0
0
0
4
－ Calculation－ 1. Input Offset Voltage (Vio) 2. Large Signal Voltage Gain (Av) 3 Common-mode Rejection Ratio (CMRR) 4. Power Supply Rejection Ratio (PSRR)
Vio =
|VF1| 1+Rf/Rs
[V]
Av = 20Log
CMRR = 20Log
2×(1+Rf /Rs) |VF2-VF3|
[dB]
[dB]
⊿Vicm ×(1+Rf /Rs) |VF4-VF5|
PSRR = 20Log
⊿VDD ×(1+Rf /Rs) [dB] |VF6-VF7|
0.1[μF]
Rf=50[kΩ] SW1 RS＝50[Ω] Ri=1[MΩ] RK=500[kΩ] 0.015[μF] RS＝50[Ω] Vicm 50[kΩ] 0.015[μF] DUT SW3 1000[pF] RL SW2 NULL
VDD
EK
RK=500[kΩ]
0.01[μF] 15V
Ri=1[MΩ]
V
-15V
VF
VSS
VRL
Fig.94 Test circuit 1
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
12/17
2010.03 - Rev.A
BU7265G,BU7265SG,BU7271G,BU7271SG, BU7411G,BU7411SG,BU7421G,BU7421SG ●Test circuit2 switch condition SW No. Supply Current Maximum Output Voltage (RL=10[kΩ]) Output Current Slew Rate Maximum Frequency SW 1 OFF OFF OFF OFF ON SW 2 OFF ON ON OFF OFF
SW3
Technical Note
SW 3 ON OFF OFF ON OFF
SW 4 OFF OFF OFF OFF ON
SW 5 ON ON ON OFF ON
SW 6 OFF OFF OFF OFF OFF
SW 7 OFF OFF OFF ON OFF
SW 8 OFF ON OFF OFF OFF
SW 9 OFF OFF OFF ON ON
SW 10 OFF OFF ON OFF OFF
SW 11 OFF ON OFF OFF OFF
SW 12 OFF OFF OFF ON ON
SW4
R2=100[k Ω]
VDD=3[V]
A
SW1
SW2 SW5
SW6
SW7 GND
SW8
SW9
SW10
SW11
SW12
R1=1[k Ω]
A
V
V
～
～
VIN-
VIN+
～
RL
CL Vo
Fig.95 Test circuit2
VIN
[V]
VOUT
[V]
SR= ΔV /Δt
3[V]
3[V]
3[VP-P]
Δt
ΔV
0[V]
t
0[V]
t
Fig.96 Slew rate input output wave (Input-Output Full Swing BU7265 family, BU7271 family)
VIN
[V]
VOUT
[V]
SR= ΔV /Δt
1.8[V]
1.8[V]
1.8[VP-P]
Δt
ΔV
0[V]
t
0[V]
t
Fig.97 Slew rate input output wave (Ground Sense BU7411 family, BU7421 family)
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
13/17
2010.03 - Rev.A
BU7265G,BU7265SG,BU7271G,BU7271SG, BU7411G,BU7411SG,BU7421G,BU7421SG
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) 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. 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 Circuit current (IDD) Indicates the IC current that flows under specified conditions and no-load steady status. 2.5 High level output voltage / Low level output voltage (VOM) Indicates the voltage range that can be output by the IC under specified load condition. It is typically divided into high-level output voltage and low-level output voltage. High-level output voltage indicates the upper limit of output voltage. Low-level output voltage indicates the lower limit. 2.6 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) 2.7 Input common-mode voltage range (Vicm) Indicates the input voltage range where IC operates normally. 2.8 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) 2.9 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) 2.10 Channel separation (CS) Indicates the fluctuation of input offset voltage or that of output voltage with reference to the change of output voltage of driven channel. 2.11 Slew rate (SR) Indicates the time fluctuation ratio of voltage output when step input signal is applied. 2.12 Unity gain frequency (ft) Indicates a frequency where the voltage gain of Op-Amp is 1. 2.13 Total harmonic distortion + Noise (THD+N) Indicates the fluctuation of input offset voltage or that of output voltage with reference to the change of output voltage of driven channel. 2.14 Input referred noise voltage (Vn) Indicates a noise voltage generated inside the operational amplifier equivalent by ideal voltage source connected in series with input terminal.
2.
www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved.
14/17
2010.03 - Rev.A
BU7265G,BU7265SG,BU7271G,BU7271SG, BU7411G,BU7411SG,BU7421G,BU7421SG
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.98 (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.98 (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. Fig.99(c)-(d) show a derating curve for an example of BU7265 family, BU7271family, BU7411family, BU7421family.
[W]
Power dissipation of IC
θja =
(Tj Ta) / Pd [ ℃ / W] －
Pd(max) P2 θja2
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