Datasheet
Operational Amplifiers Series
Input/Output Full Swing
High Slew Rate
Low Voltage CMOS Operational Amplifiers
BU7291G, BU7291SG, BU7294xx, BU7294Sxx
●General
Description
BU7291G/BU7294xx and BU7291SG/BU7294Sxx
are low supply voltage CMOS operational single/quad
Amplifiers. This series is a Input/Output full swing, high
slew rate, low supply current and high speed operation.
Input bias current is very low at 1pA (Typ) .
Especially,BU7291SG and BU7294Sxx, it has wide
temperature range from -40C to +105C.
●Features
High slew rate
Input/Output full swing
Large DC voltage gain
Low input bias current
●Application
Battery equipment
Consumer electronics
●Simplified
schematic
●Key
Specifications
Low Operating Supply Voltage (single supply):
+2.4V to +5.5V
High Slew Rate:
3.0V/µs
Wide Temperature Range:
BU7291G/BU7294xx
-40C to +85C
BU7291SG/BU7294Sxx
-40C to +105C
Low Input Offset Current:
1pA (Typ)
Low Input Bias Current:
1pA (Typ)
●Package
SSOP5
SOP14
SSOP-B14
W(Typ) x D(Typ) x H(Max)
2.90mm x 2.80mm x 1.25mm
8.70mm x 6.20mm x 1.71mm
5.00mm x 6.40mm x 1.35mm
VDD
Vbias
+IN
Class
AB control
-IN
OUT
Vbias
VSS
Figure 1. Simplified schematic (1 channel only)
○Product
structure：Silicon monolithic integrated circuit
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©2013 ROHM Co., Ltd. All rights reserved.
TSZ22111½14½001
○This
product is not designed protection against radioactive rays.
1/27
TSZ02201-0RAR1G200390-1-2
22.May.2013 Rev.001
BU7291G, BU7291SG, BU7294xx, BU7294Sxx
●Pin
Configuration
BU7291G, BU7291SG : SSOP5
Pin No.
+IN
1
+
5
VDD
Datasheet
Pin Name
+IN
VSS
-IN
OUT
VDD
1
2
3
VSS
2
-IN
3
4 OUT
4
5
BU7294F, BU7294SF : SOP14
BU7294FV, BU7294SFV : SSOP-B14
OUT1 1
-IN1
+IN1
VDD
+IN2
-IN2
2
3
4
5
6
CH2
CH1
14 OUT4
- +
CH4
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Pin Name
OUT1
-IN1
+IN1
VDD
+IN2
-IN2
OUT2
OUT3
-IN3
+IN3
VSS
+IN4
-IN4
OUT4
13 -IN4
12 +IN4
11 VSS
10 +IN3
+ -
- +
CH3
+ -
9 -IN3
8 OUT3
OUT2 7
SSOP5
BU7291G
BU7291SG
Package
SOP14
BU7294F
BU7294SF
SSOP-B14
BU7294FV
BU7294SFV
●Ordering
Information
B
U
7
2
9
x
x
x
x
-
xx
Packaging and forming specification
E2: Embossed tape and reel
(SOP14/ SSOP-B14)
TR: Embossed tape and reel
(SSOP5)
Part Number
BU7291G
BU7291SG
BU7294xx
BU7294Sxx
Package
G:SSOP5
F:SOP14
FV:SSOP-B14
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TSZ22111½15½001
2/27
TSZ02201-0RAR1G200390-1-2
22.May.2013 Rev.001
BU7291G, BU7291SG, BU7294xx, BU7294Sxx
●Line-up
Topr
-40C to +85C
-40C to +105C
-40C to +85C
-40C to +105C
-40C to +85C
-40C to +105C
SSOP5
SSOP5
SOP14
SOP14
SSOP-B14
SSOP-B14
Package
Reel of 3000
Reel of 3000
Reel of 2500
Reel of 2500
Reel of 2500
Reel of 2500
Datasheet
Operable Part Number
BU7291G-TR
BU7291SG-TR
BU7294F-E2
BU7294SF-E2
BU7294FV-E2
BU7294SFV-E2
●Absolute
Maximum Ratings(Ta=25C)
Ratings
Parameter
Supply Voltage
Power dissipation
Differential Input Voltage
*5
Input Common-mode
Voltage Range
Input Current
*6
Operating Supply Voltage
Operating Temperature
Storage Temperature
Maximum
Junction Temperature
Pd
Symbol
VDD-VSS
SSOP5
SOP14
SSOP-B14
Vid
Vicm
Ii
Vopr
Topr
Tstg
Tjmax
- 40 to +85
- 55 to +125
+125
BU7291
BU7294
+7
0.54
*1*4
0.45
*2*4
0.70
*3*4
VDD - VSS
(VSS - 0.3) to VDD + 0.3
±10
+2.4 to +5.5
- 40 to +105
V
V
mA
V
C
C
C
W
BU7291S
BU7294S
Unit
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 absolute maximum rated
temperature environment may cause deterioration of characteristics.
*1
To use at temperature above Ta＝25C reduce 5.4mW.
*2
To use at temperature above Ta＝25C reduce 4.5mW.
*3
To use at temperature above Ta＝25C reduce 7.0mW.
*4
Mounted on a FR4 glass epoxy PCB(70mm×70mm×1.6mm).
*5
The voltage difference between inverting input and non-inverting input is the differential input voltage.
Then input pin voltage is set to more than VSS.
*6
An excessive input current will flow when input voltages of more than VDD+0.6V or lesser than VSS-0.6V are applied.
The input current can be set to less than the rated current by adding a limiting resistor.
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3/27
TSZ02201-0RAR1G200390-1-2
22.May.2013 Rev.001
BU7291G, BU7291SG, BU7294xx, BU7294Sxx
●Electrical
Characteristics
○BU7291,
BU7291S (Unless otherwise specified VDD=+3V, VSS=0V, Ta=25C)
Limits
Temperature
Parameter
Symbol
Range
Min.
Typ.
Max.
Input Offset Voltage
*7
Input Offset Current
*7
Input Bias Current
*7
Supply Current
*8
Maximum Output Voltage(High)
Maximum Output Voltage(Low)
Large Signal Voltage Gain
Input Common-mode
Voltage Range
Common-mode Rejection Ratio
Power Supply Rejection Ratio
Output Source Current
*9
Output Sink Current
*9
Slew Rate
Gain Band Width
Unity Gain Frequency
Phase Margin
Total Harmonic Distortion
+Noise
*7
*8
*9
Datasheet
Unit
mV
pA
pA
μA
V
V
dB
V
dB
dB
mA
mA
V/μs
MHz
MHz
deg
%
Condition
-
-
-
RL=∞
Av=0dB, +IN=1.5V
RL=10kΩ
RL=10kΩ
RL=10kΩ
VSS to VDD
-
-
VDD-0.4V
VSS+0.4V
CL=25pF
CL=25pF, f=100kHz
CL=25pF
CL=25pF
OUT=0.8V
P-P
, f=1kHz
Vio
Iio
Ib
IDD
VOH
VOL
Av
Vicm
CMRR
PSRR
Isource
Isink
SR
GBW
f
T
θ
THD+N
25C
25C
25C
25C
Full range
25C
25C
25C
25C
25C
25C
25C
25C
25C
25C
25C
25C
25C
-
-
-
-
-
VDD-0.1
-
70
0
40
45
5
9
-
-
-
-
-
1
1
1
470
-
-
-
105
-
60
80
8
16
3.0
2.8
2.8
50
0.03
9
-
-
800
1100
-
VSS+0.1
-
3
-
-
-
-
-
-
-
-
-
Absolute value
Full range BU7291: Ta=-40C to +85C BU7291S: Ta=-40C to +105C
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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TSZ22111½15½001
4/27
TSZ02201-0RAR1G200390-1-2
22.May.2013 Rev.001
BU7291G, BU7291SG, BU7294xx, BU7294Sxx
○BU7294,
BU7294S (Unless otherwise specified VDD=+3V, VSS=0V, Ta=25C)
Limits
Temperature
Parameter
Symbol
Range
Min.
Typ.
Max.
Input Offset Voltage
*10
Input Offset Current
*10
Input Bias Current
*10
Supply Current
*11
Maximum Output Voltage(High)
Maximum Output Voltage(Low)
Large Signal Voltage Gain
Input Common-mode
Voltage Range
Common-mode Rejection Ratio
Power Supply Rejection Ratio
Output Source Current
*12
Output Sink Current
*12
Slew Rate
Gain Band Width
Unity Gain Frequency
Phase Margin
Total Harmonic Distortion
+Noise
Channel Separation
*10
*11
*12
Datasheet
Unit
mV
pA
pA
μA
V
V
dB
V
dB
dB
mA
mA
V/μs
MHz
MHz
deg
%
dB
Condition
-
-
-
RL=∞, All Op-Amps
Av=0dB, +IN=1.5V
RL=10kΩ
RL=10kΩ
RL=10kΩ
VSS to VDD
-
-
VDD-0.4V
VSS+0.4V
CL=25pF
CL=25pF, f=100kHz
CL=25pF
CL=25pF
OUT=0.8V
P-P
, f=1kHz
f=1kHz, OUT=0.5Vrms
Vio
Iio
Ib
IDD
VOH
VOL
Av
Vicm
CMRR
PSRR
Isource
Isink
SR
GBW
f
T
θ
THD+N
CS
25C
25C
25C
25C
Full range
25C
25C
25C
25C
25C
25C
25C
25C
25C
25C
25C
25C
25C
25C
-
-
-
-
-
VDD-0.1
-
70
0
40
45
5
9
-
-
-
-
-
-
1
1
1
2000
-
-
-
105
-
60
80
8
16
3.0
2.8
2.8
50
0.03
100
9
-
-
3200
4400
-
VSS+0.1
-
3
-
-
-
-
-
-
-
-
-
-
Absolute value
Full range BU7294: Ta=-40C to +85C BU7294S: Ta=-40C to +105C
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
©2013 ROHM Co., Ltd. All rights reserved.
TSZ22111½15½001
5/27
TSZ02201-0RAR1G200390-1-2
22.May.2013 Rev.001
stm32/stm8
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