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AD8691 Datasheet(PDF) 1 Page - Analog Devices

Part No. AD8691
Description  Low Cost, Low Noise, CMOS Rail-to-Rail Output Operational Amplifiers
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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AD8691 Datasheet(HTML) 1 Page - Analog Devices

 
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Low Cost, Low Noise, CMOS Rail-to-Rail
Output Operational Amplifiers
AD8691/AD8692/AD8694
Rev. B
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
© 2005 Analog Devices, Inc. All rights reserved.
FEATURES
Offset voltage: 400 µV typ
Low offset voltage drift: 6 µV/°C max (AD8692/AD8694)
Very low input bias currents: 1 pA max
Low noise: 8 nV/
√Hz
Low distortion: 0.0006%
Wide bandwidth: 10 MHz
Unity-gain stable
Single-supply operation: 2.7 V to 6 V
APPLICATIONS
Photodiode amplification
Battery-powered instrumentation
Medical instruments
Multipole filters
Sensors
Portable audio devices
PIN CONFIGURATIONS
OUT 1
+IN 3
V– 2
V+
5
–IN
3
AD8691
TOP VIEW
(Not to Scale)
Figure 1. 5-Lead TSOT
OUT A 1
V– 2
+IN A 3
V+
5
–IN
4
AD8691
Figure 2. 5-Lead SC70
OUT A 1
–IN A 2
+IN A 3
V– 4
V+
8
OUT B
7
–IN B
6
+IN B
5
AD8692
TOP VIEW
(Not to Scale)
Figure 3. 8-Lead MSOP
OUT A 1
–IN A 2
+IN A 3
V– 4
V+
8
OUT B
7
–IN B
6
+IN B
5
AD8692
TOP VIEW
(Not to Scale)
Figure 4. 8-Lead SOIC
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 C
10
–IN B 6
–IN C
9
OUT B 7
OUT C
8
AD8694
TOP VIEW
(Not to Scale)
Figure 5. 14-Lead SOIC
1
2
3
4
5
6
7
AD8694
– IN A
+IN A
V+
OUT B
–IN B
+IN B
OUT A
14
13
12
11
10
9
8
–IN D
+IN D
V–
OUT C
–IN C
+IN C
OUT D
TOP VIEW
(Not to Scale)
Figure 6. 14-Lead TSSOP
GENERAL DESCRIPTION
The AD8691, AD8692, and AD8694 are low cost, single, dual,
and quad rail-to-rail output, single-supply amplifiers featuring
low offset and input voltages, low current noise, and wide signal
bandwidth. The combination of low offset, low noise, very low
input bias currents, and high speed make these amplifiers useful
in a wide variety of applications. Filters, integrators, photodiode
amplifiers, and high impedance sensors all benefit from this
combination of performance features. Audio and other ac
applications benefit from the wide bandwidth and low
distortion of these devices.
Applications for these amplifiers include PA controls, laser
diode control loops, portable and loop-powered instrumentation,
audio amplification for portable devices, and ASIC input and
output amplifiers.
The small SC70 and TSOT package options for the AD8691
allow it to be placed next to sensors, thereby reducing external
noise pickup.
The AD8691, AD8692, and AD8694 are specified over the
extended industrial temperature range of −40°C to +125°C. The
AD8691 single is available in 5-lead SC70 and TSOT packages.
The AD8692 dual is available in 8-lead MSOP and narrow SOIC
surface-mount packages. The AD8694 quad is available in
14-lead TSSOP and narrow 14-lead SOIC packages.


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