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ADA4638-1_16

更新时间： 2024-12-01 01:03:03
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亚德诺 - ADI /
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25页 912K
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30 V Zero-Drift, Rail-to-Rail Output Precision Amplifier

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ADA4638-1_16 数据手册

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30 V Zero-Drift, Rail-to-Rail Output  
Precision Amplifier  
Data Sheet  
ADA4638-1  
FEATURES  
PIN CONFIGURATIONS  
ADA4638-1  
Single supply operation: 4.5 V to 30 V  
Dual supply operation: 2.25 V to 15 V  
Low offset voltage: 4 μV maximum  
Input offset voltage drift: 0.05 μV/°C maximum  
High gain: 130 dB minimum  
NC  
–IN  
+IN  
V–  
1
2
3
4
8
7
6
5
NC  
V+  
TOP VIEW  
(Not to Scale)  
OUT  
NC  
NOTES  
High PSRR: 120 dB minimum  
High CMRR: 130 dB minimum  
1. NC = NO CONNECT. DO NOT  
CONNECT TO THIS PIN.  
Input common-mode range includes lower supply rail  
Rail-to-rail output  
Low supply current: 0.95 mA maximum  
Figure 1. 8-Lead SOIC  
ADA4638-1  
NC  
–IN  
+IN  
V–  
1
2
3
4
8
7
6
5
NC  
V+  
APPLICATIONS  
TOP VIEW  
(Not to Scale)  
OUT  
NC  
Electronic weigh scale  
Pressure and position sensors  
Strain gage amplifiers  
NOTES  
1. NC = NO CONNECT. DO NOT CONNECT TO THIS PIN.  
2. IT IS RECOMMENDED THAT THE EXPOSED PAD BE  
CONNECTED TO V–.  
Medical instrumentation  
Thermocouple amplifiers  
Figure 2. 8-Lead LFCSP  
GENERAL DESCRIPTION  
The ADA4638-1 is a high voltage, high precision, zero-drift  
amplifier featuring rail-to-rail output swing. It is guaranteed to  
operate from 4.5 V to 30 V single supply or ±±.±5 V to ±15 V  
dual supplies while consuming less than 0.95 mA of supply  
current at ±5 V.  
Table 1. Analog Devices, Inc., Zero-Drift Op Amp Portfolio  
Offset  
Voltage  
(μV) Max (μV/°C) Max  
Offset  
Voltage Drift  
Operating  
Voltage  
Type  
Product  
30 V  
16 V  
Single ADA4638-1 4.5  
0.08  
0.06  
0.06  
0.015  
0.02  
0.1  
Single AD8638  
Dual AD8639  
9
9
With an offset voltage of 4 μV, offset drift less than 0.05 μV/°C,  
no 1/f noise, and input voltage noise of only 1.± μV p-p (0.1 Hz  
to 10 Hz), the ADA4638-1 is suited for high precision applications  
where large error sources cannot be tolerated. Pressure sensors,  
medical equipment, and strain gage amplifiers benefit greatly  
from nearly zero drift over the wide operating temperature  
range. Many applications can take advantage of the rail-to-rail  
output swing provided by the ADA4638-1 to maximize the signal-  
to-noise ratio (SNR).  
5 V  
Single ADA4528-1 2.5  
AD8628  
AD8538  
5
13  
ADA4051-1 15  
0.1  
Dual  
AD8629  
AD8539  
5
0.02  
0.1  
13  
ADA4051-2 15  
Quad AD8630  
0.1  
5
0.02  
The ADA4638-1 is specified for the extended industrial (−40°C  
to +1±5°C) temperature range and is available in 8-lead LFCSP  
(3 mm × 3 mm) and SOIC packages.  
Rev. 0  
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  
©2011 Analog Devices, Inc. All rights reserved.  
 
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