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OP281GS-REEL

更新时间： 2025-07-21 02:54:27
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亚德诺 - ADI 运算放大器
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20页 456K
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Ultralow Power, Rail-to-Rail Output Operational Amplifiers

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OP281GS-REEL 数据手册

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Ultralow Power, Rail-to-Rail Output  
Operational Amplifiers  
OP281/OP481  
PIN CONFIGURATIONS  
FEATURES  
Low supply current: 4 μA/amplifier maximum  
Single-supply operation: 2.7 V to 12 V  
Wide input voltage range  
V+  
OUT A  
–IN A  
+IN A  
V–  
1
2
3
4
8
7
6
5
OP281  
OUT B  
–IN B  
+IN B  
TOP VIEW  
(Not to Scale)  
Rail-to-rail output swing  
Low offset voltage: 1.5 mV  
Figure 1. 8-Lead  
Narrow-Body SOIC  
(R Suffix)  
No phase reversal  
APPLICATIONS  
Comparator  
Battery-powered instrumentation  
Safety monitoring  
1
2
3
4
V+  
OUT A  
–IN A  
+IN A  
V–  
8
OP281  
7
6
5
OUT B  
–IN B  
+IN B  
TOP VIEW  
(Not to Scale)  
Remote sensors  
Low voltage strain gage amplifiers  
Figure 2. 8-Lead TSSOP  
(RU Suffix)  
GENERAL DESCRIPTION  
The OP281 and OP481 are dual and quad ultralow power  
single-supply amplifiers featuring rail-to-rail outputs. Each  
operates from supplies as low as 2.0 V and is specified at +3 V  
and +5 V single supplies as well as 5 V dual supplies.  
1
2
3
4
5
6
7
14 OUT D  
OUT A  
–IN A  
+IN A  
V+  
13 –IN D  
12 +IN D  
OP481  
V–  
11  
10  
9
TOP VIEW  
(Not to Scale)  
+IN C  
–IN C  
OUT C  
+IN B  
–IN B  
OUT B  
Fabricated on Analog Devices’ CBCMOS process, the  
8
OP281/OP481 feature a precision bipolar input and an output  
that swings to within millivolts of the supplies, continuing to  
sink or source current up to a voltage equal to the supply voltage.  
Figure 3. 14-Lead  
Narrow-Body SOIC  
(R Suffix)  
Applications for these amplifiers include safety monitoring,  
portable equipment, battery and power supply control, and  
signal conditioning and interfacing for transducers in very low  
power systems.  
1
14  
13  
OUT A  
–IN A  
+IN A  
V+  
OUT D  
–IN D  
+IN D  
V–  
2
3
4
5
6
7
12  
OP481  
TOP VIEW  
11  
The output’s ability to swing rail-to-rail and not increase supply  
current when the output is driven to a supply voltage enables  
the OP281/OP481 to be used as comparators in very low power  
systems. This is enhanced by their fast saturation recovery time.  
Propagation delays are 250 μs.  
(Not to Scale)  
10  
9
+IN B  
–IN B  
OUT B  
+IN C  
–IN C  
OUT C  
8
Figure 4. 14-Lead TSSOP  
(RU Suffix)  
The OP281/OP481 are specified over the extended industrial  
temperature range (−40°C to +85°C). The OP281 dual amplifier  
is available in 8-lead SOIC surface-mount and TSSOP packages.  
The OP481 quad amplifier is available in narrow 14-lead SOIC  
and TSSOP packages.  
Rev. C  
Information furnished by Analog Devices is believed to be accurate and reliable. However, no  
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other  
rights of third parties that may result from its use. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks and registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700 www.analog.com  
Fax: 781.461.3113 ©1996–2007 Analog Devices, Inc. All rights reserved.  
 
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OP281GS-REEL 替代型号

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