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OP281GRU-REEL Datasheet

  • OP281GRU-REEL

  • Ultralow Power, Rail-to-Rail Output Operational Amplifiers

  • 20頁

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Ultralow Power, Rail-to-Rail Output
Operational Amplifiers
OP281/OP481
FEATURES
Low supply current: 4 渭A/amplifier maximum
Single-supply operation: 2.7 V to 12 V
Wide input voltage range
Rail-to-rail output swing
Low offset voltage: 1.5 mV
No phase reversal
PIN CONFIGURATIONS
OUT A
1
鈥揑N A
2
8
V+
APPLICATIONS
Comparator
Battery-powered instrumentation
Safety monitoring
Remote sensors
Low voltage strain gage amplifiers
OUT A
鈥揑N A
+IN A
V鈥?/div>
1
Figure 1. 8-Lead
Narrow-Body SOIC
(R Suffix)
8
V+
OUT B
鈥揑N B
+IN B
00291-002
2
3
4
OP281
TOP VIEW
(Not to Scale)
7
6
5
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 鹵5 V dual supplies.
Fabricated on Analog Devices鈥?CBCMOS process, the
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.
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.
The output鈥檚 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 渭s.
The OP281/OP481 are specified over the extended industrial
temperature range (鈭?0擄C to +85擄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.
Figure 2. 8-Lead TSSOP
(RU Suffix)
OUT A
1
鈥揑N A
2
+IN A
3
V+
4
+IN B
5
鈥揑N B
6
OUT B
7
14
OUT D
13
鈥揑N D
OP481
12
+IN D
11
V鈥?/div>
TOP VIEW
(Not to Scale)
10
+IN C
00291-003
00291-004
9
8
鈥揑N C
OUT C
Figure 3. 14-Lead
Narrow-Body SOIC
(R Suffix)
OUT A
鈥揑N A
+IN A
V+
+IN B
鈥揑N B
OUT B
1
2
3
4
5
6
7
14
OUT D
13
鈥揑N D
OP481
12
+IN D
TOP VIEW
11
V鈥?/div>
(Not to Scale)
10
+IN C
9
8
鈥揑N C
OUT C
Figure 4. 14-Lead TSSOP
(RU Suffix)
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 registered trademarks are the 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 漏1996鈥?007 Analog Devices, Inc. All rights reserved.
00291-001
OP281
7
OUT B
TOP VIEW
+IN A
3
(Not to Scale)
6
鈥揑N B
5
+IN B
V鈥?/div>
4

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