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AD8663_07

更新时间: 2024-01-14 06:54:21
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16页 832K
描述
Low Noise, Precision, 16 V, CMOS, Rail-to-Rail Operational Amplifiers

AD8663_07 数据手册

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Low Noise, Precision, 16 V, CMOS,  
Rail-to-Rail Operational Amplifiers  
AD8663/AD8667/AD8669  
FEATURES  
PIN CONFIGURATIONS  
Low offset voltage: 175 μV maximum @ VSY = 5 V  
Low supply current: 275 ꢀA maximum per amplifier  
Single-supply operation: 5 V to 16 V  
Low noise: 23 nV/√Hz  
Low input bias current: 300 fA  
Unity-gain stable  
NC  
–IN  
+IN  
V–  
1
2
3
4
8
7
6
5
NC  
V+  
AD8663  
NC  
–IN  
+IN  
V–  
1
2
3
4
8
7
6
5
NC  
V+  
AD8663  
TOP VIEW  
OUT  
NC  
OUT  
NC  
(Not to Scale)  
NC = NO CONNECT  
NC = NO CONNECT  
Small packages available  
3 mm × 3 mm, 8-lead LFCSP  
8-lead MSOP  
Figure 1. 8-Lead SOIC (R-8)  
Figure 2. 8-Lead LFCSP (CP-8-2)  
APPLICATIONS  
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–  
Sensor front ends  
OUT A  
–IN A  
+IN A  
V–  
1
2
3
4
8
7
6
5
V+  
Transimpedance amps  
Electrometer applications  
Photodiode amplification  
Low power ADC drivers  
Medical diagnostic instruments  
pH and ORP meters and probes  
DAC or REF buffers  
AD8669
AD8667  
OUT B  
–IN B  
+IN B  
TOP VIEW  
TOP VIEW  
(Not to Scale)  
(Not to Scale)  
+IN B  
IN B  
OUT B  
10 +IN C  
9
8
IN C  
OUT C  
Figure 3. 8-Lead MSOP (RM-8),  
8-Lead SOIC (R-8)  
Figure 4. 14-Lead SOIC (R-14)  
GENERAL DESCRIPTION  
The AD866x are rail-to-rail output amplifiers that use the  
Analog Devices, Inc., patented DigiTrim® trimming technique  
to achieve low offset voltage. The AD866x feature an extended  
operating range with supply voltages up to 16 V. They also  
feature low input bias current, low input offset voltage, and low  
current noise.  
suited for precision I-to-V converters. The combination of  
precision offset, offset drift, and low noise also make the op  
amps ideal for gain, dc offset adjust, and active filter in both  
instrumentation and medical applications. These low power  
op amps can be used in IR thermometers, pH and ORP instru-  
ments, pressure transducer front ends, and other sensor signal  
conditioning circuits that are used in remote or wireless  
applications.  
The combination of low offset, very low input bias current, and  
a wide supply range makes these amplifiers useful in a wide  
variety of applications usually associated with higher priced  
JFET amplifiers. Systems using high impedance sensors, such as  
photodiodes, benefit from the combination of low input bias  
current, low noise, low offset, and wide bandwidth.  
The AD8663/AD8667/AD8669 are specified over the extended  
industrial temperature range of −40°C to +1±5°C. The single  
AD8663 is available in a narrow 8-lead SOIC package and a very  
thin, 8-lead LFCSP. The dual AD8667 is available in a narrow  
8-lead SOIC package and an 8-lead MSOP. The quad AD8669 is  
available in a 14-lead SOIC package.  
The ability to operate the device for single (5 V to 16 V) or dual  
supplies (±±.5 V to ±8 V) supports many applications. The rail-  
to-rail outputs provide increased dynamic range to drive low  
frequency data converters. The low bias current drift is well  
Rev. A  
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  
Fax: 781.461.3113  
www.analog.com  
©2007 Analog Devices, Inc. All rights reserved.  
 

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