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OP495GS 数据手册 - ADI（亚德诺）
制造商:
ADI（亚德诺）
分类:
放大器、缓冲器
封装:
SOIC-16
描述:
双/四路轨到轨运算放大器 Dual/Quad Rail-to-Rail Operational Amplifiers
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OP495GS数据手册
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Dual/Quad Rail-to-Rail
Operational Amplifiers
OP295/OP495
Rev. G
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 ©2009 Analog Devices, Inc. All rights reserved.
FEATURES
Rail-to-rail output swing
Single-supply operation: 3 V to 36 V
Low offset voltage: 300 μV
Gain bandwidth product: 75 kHz
High open-loop gain: 1000 V/mV
Unity-gain stable
Low supply current/per amplifier: 150 μA maximum
APPLICATIONS
Battery-operated instrumentation
Servo amplifiers
Actuator drives
Sensor conditioners
Power supply control
GENERAL DESCRIPTION
Rail-to-rail output swing combined with dc accuracy are the
key features of the OP495 quad and OP295 dual CBCMOS
operational amplifiers. By using a bipolar front end, lower noise
and higher accuracy than those of CMOS designs have been
achieved. Both input and output ranges include the negative
supply, providing the user with zero-in/zero-out capability. For
users of 3.3 V systems such as lithium batteries, the OP295/OP495
are specified for 3 V operation.
Maximum offset voltage is specified at 300 µV for 5 V operation,
and the open-loop gain is a minimum of 1000 V/mV. This yields
performance that can be used to implement high accuracy systems,
even in single-supply designs.
The ability to swing rail-to-rail and supply 15 mA to the load
makes the OP295/OP495 ideal drivers for power transistors and
H bridges. This allows designs to achieve higher efficiencies and
to transfer more power to the load than previously possible
without the use of discrete components.
For applications such as transformers that require driving
inductive loads, increases in efficiency are also possible.
Stability while driving capacitive loads is another benefit of this
design over CMOS rail-to-rail amplifiers. This is useful for
driving coax cable or large FET transistors. The OP295/OP495
are stable with loads in excess of 300 pF.
PIN CONFIGURATIONS
OUT A 1
–IN A 2
+IN A
3
V–
4
V+8
OUT B7
–IN B
6
+IN B
5
OP295
TOP VIEW
(Not to Scale)
00331-001
Figure 1. 8-Lead Narrow-Body SOIC_N
S Suffix (R-8)
OUT A
1
–IN A
2
+IN A
3
V–
4
V+
8
OUT B
7
–IN B
6
+IN B
5
OP295
0
0331-002
Figure 2. 8-Lead PDIP
P Suffix (N-8)
OUT A
1
–IN A
2
+IN A
3
V+
4
OUT D
14
–IN D
13
+IN D
12
V–
11
+IN B
5
–IN B
6
OUT B
7
+IN C
10
–IN C
9
OUT C
8
OP495
00331-003
Figure 3. 14-Lead PDIP
P Suffix (N-14)
OUT A
1
–IN A 2
+IN A 3
V+
4
OUT D
16
–IN D15
+IN D14
V–
13
+IN B 5 +IN C12
–IN B
6
–IN C
11
OUT B 7 OUT C10
NC 8 NC9
NC = NO CONNECT
OP495
TOP VIEW
(Not to Scale)
00331-004
Figure 4. 16-Lead SOIC_W
S Suffix (RW-16)
The OP295 and OP495 are specified over the extended indus-
trial (−40°C to +125°C) temperature range. The OP295 is
available in 8-lead PDIP and 8-lead SOIC_N surface-mount
packages. The OP495 is available in 14-lead PDIP and 16-lead
SOIC_W surface-mount packages.
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