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AD8691_07

更新时间: 2024-09-15 04:31:11
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12页 439K
描述
Low Cost, Low Noise, CMOS Rail-to-Rail Output Operational Amplifiers

AD8691_07 数据手册

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Low Cost, Low Noise, CMOS Rail-to-Rail  
Output Operational Amplifiers  
AD8691/AD8692/AD8694  
FEATURES  
PIN CONFIGURATIONS  
Offset voltage: 400 μV typical  
Low offset voltage drift: 6 μV/°C maximum  
(AD8692/AD8694)  
Very low input bias currents: 1 pA maximum  
Low noise: 8 nV/Hz  
OUT  
V–  
1
2
3
5
V+  
AD8691  
TOP VIEW  
(Not to Scale)  
+IN  
4
–IN  
Figure 1. 5-Lead TSOT  
Low distortion: 0.0006%  
Wide bandwidth: 10 MHz  
Unity-gain stable  
Single-supply operation: 2.7 V to 6 V  
AD8691  
OUT A  
V–  
1
2
3
5
V+  
+IN A  
4
–IN  
APPLICATIONS  
Photodiode amplification  
Battery-powered instrumentation  
Medical instruments  
Multipole filters  
Figure 2. 5-Lead SC70  
OUT A  
–IN A  
+IN A  
V–  
1
2
3
4
8
7
6
5
V+  
AD8692  
OUT B  
–IN B  
+IN B  
TOP VIEW  
(Not to Scale)  
Sensors  
Portable audio devices  
Figure 3. 8-Lead MSOP  
GENERAL DESCRIPTION  
OUT A  
–IN A  
+IN A  
V–  
1
2
3
4
8
7
6
5
V+  
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.  
AD8692  
OUT B  
–IN B  
+IN B  
TOP VIEW  
(Not to Scale)  
Figure 4. 8-Lead SOIC  
OUT A  
–IN A  
+IN A  
V+  
1
2
3
4
5
6
7
14 OUT D  
13 –IN D  
12 +IN D  
11 V–  
AD8694  
TOP VIEW  
(Not to Scale)  
+IN B  
–IN B  
OUT B  
10 +IN C  
9
8
–IN C  
OUT C  
Applications for these amplifiers include power amplifier (PA)  
controls, laser diode control loops, portable and loop-powered  
instrumentation, audio amplification for portable devices, and  
ASIC input and output amplifiers.  
Figure 5. 14-Lead SOIC  
1
2
3
4
5
6
7
OUT A  
–IN A  
+IN A  
V+  
14  
13  
12  
11  
OUT D  
–IN D  
+IN D  
V–  
The small SC70 and TSOT package options for the AD8691  
allow it to be placed next to sensors, thereby reducing external  
noise pickup.  
AD8694  
TOP VIEW  
(Not to Scale)  
+IN B  
–IN B  
OUT B  
10 +IN C  
9
8
–IN C  
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 5-lead 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.  
OUT C  
Figure 6. 14-Lead TSSOP  
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 ©2004–2007 Analog Devices, Inc. All rights reserved.  
 

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