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AD8638ARJZ-R2

更新时间： 2024-02-03 01:26:14
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16 V Auto-Zero, Rail-to-Rail Output Operational Amplifiers

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16 V Auto-Zero, Rail-to-Rail Output  
Operational Amplifiers  
AD8638/AD8639  
PIN CONFIGURATIONS  
FEATURES  
Low offset voltage: 9 μV maximum  
Offset drift: 0.04 μV/°C maximum  
Rail-to-rail output swing  
5 V to 16 V single-supply or 2.5 V to 8 V dual-supply  
operation  
OUT  
V–  
1
2
3
5
V+  
AD8638  
TOP VIEW  
(Not to Scale)  
+IN  
4
–IN  
Figure 1. 5-Lead SOT-23 (RJ-5)  
High gain: 136 dB typical  
High CMRR: 133 dB typical  
High PSRR: 143 dB typical  
Very low input bias current: 40 pA maximum  
Low supply current: 1.3 mA maximum  
NC  
–IN  
+IN  
V–  
1
2
3
4
8
7
6
5
NC  
V+  
AD8638  
OUT  
NC  
TOP VIEW  
(Not to Scale)  
APPLICATIONS  
NC = NO CONNECT  
Figure 2. 8-Lead SOIC_N (R-8)  
Pressure and position sensors  
Strain gage amplifiers  
Medical instrumentation  
Thermocouple amplifiers  
Automotive sensors  
OUT A  
–IN A  
+IN A  
V–  
1
2
3
4
8
7
6
5
V+  
AD8639  
OUT B  
–IN B  
+IN B  
TOP VIEW  
(Not to Scale)  
Precision references  
Precision current sensing  
Figure 3. 8-Lead MSOP (RM-8)  
8-Lead SOIC_N (R-8)  
GENERAL DESCRIPTION  
PIN 1  
INDICATOR  
OUT A  
–IN A  
+IN A  
v–  
1
2
3
4
8
7
6
5
V+  
The AD8638/AD8639 are single and dual wide bandwidth,  
auto-zero amplifiers featuring rail-to-rail output swing and low  
noise. These amplifiers have very low offset, drift, and bias  
current. Operation is fully specified from 5 V to 16 V single  
supply ( 2.5 V to 8 V dual supply).  
OUT B  
–IN B  
+IN B  
AD8639  
TOP VIEW  
(Not to Scale)  
NOTES  
1. EXPOSED PAD SOLDERED TO  
APPLICATION BOARD.  
The AD8638/AD8639 provide benefits previously found only  
in expensive zero-drift or chopper-stabilized amplifiers. Using  
the Analog Devices, Inc., topology, these auto-zero amplifiers  
combine low cost with high accuracy and low noise. No exter-  
nal capacitors are required. In addition, the AD8638/AD8639  
greatly reduce the digital switching noise found in most chopper-  
stabilized amplifiers.  
Figure 4. 8-Lead LFCSP_WD (CP-8-5)  
The AD8638/AD8639 are specified for the extended industrial  
temperature range (−40°C to +125°C). The single AD8638 is  
available in tiny 5-lead SOT-23 and 8-lead SOIC packages.  
The dual AD8639 is available in 8-lead MSOP, 8-lead SOIC, and  
8-lead LFCSP packages.  
With a typical offset voltage of only 3 μV, drift of 0.01 μV/°C,  
and noise of 1.2 μV p-p (0.1 Hz to 10 Hz), the AD8638/AD8639  
are suited for applications in which error sources cannot be  
tolerated. Position and pressure sensors, medical equipment,  
and strain gage amplifiers benefit greatly from nearly zero drift  
over their operating temperature ranges. Many systems can take  
advantage of the rail-to-rail output swing provided by the  
AD8638/AD8639 to maximize signal-to-noise ratio (SNR).  
The AD8638/AD8639 are members of a growing series of auto-  
zero op amps offered by Analog Devices (see Table 1).  
Table 1. Auto-Zero Op Amps  
Supply 2.7 V to 5 V 2.7 V to 5 V Low Power  
5 V to 16 V  
AD8638  
AD8639  
Single  
Dual  
AD8628  
AD8629  
AD8630  
AD8538  
AD8539  
Quad  
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 ©2007–2008 Analog Devices, Inc. All rights reserved.  
 
 
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AD8638ARJZ-R2 替代型号

型号 品牌 替代类型 描述 数据表
AD8638ARJZ-REEL ADI

完全替代

 16 V Auto-Zero, Rail-to-Rail Output Operational Amplifiers
AD8638ARJZ ADI

完全替代

 16V Auto-Zero, Rail-to-Rail Output, Precision Amplifiers
AD8638ARJZ-REEL7 ADI

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