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AD8209 PDF预览

AD8209

更新时间: 2024-11-21 06:36:11
品牌 Logo 应用领域
亚德诺 - ADI 放大器
页数 文件大小 规格书
16页 318K
描述
High Voltage, Precision Difference Amplifier

AD8209 数据手册

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High Voltage,  
Precision Difference Amplifier  
AD8209  
FUNCTIONAL BLOCK DIAGRAM  
FEATURES  
V
S
A1 A2  
8000 V HBM ESD  
AEC-Q100 qualified  
EMI filters included  
High common-mode voltage range  
−2 V to +45 V operating  
−24 V to +80 V survival  
EMI  
FILTER  
AD8209  
EMI  
IN+  
IN–  
+
+
FILTER  
OUT  
G = 7  
G = 2  
EMI  
FILTER  
Buffered output voltage  
Gain = 14 V/V  
Low-pass filter (single-pole or two-pole)  
Wide operating temperature range  
8-lead MSOP: −40°C to +125°C  
Excellent ac and dc performance  
1 mV voltage offset  
GND  
Figure 1.  
−5 ppm/°C typical gain drift  
80 dB CMRR minimum dc to 10 kHz  
APPLICATIONS  
High-side current sensing  
Motor controls  
Solenoid controls  
Power management  
Low-side current sensing  
Diagnostic protection  
GENERAL DESCRIPTION  
The AD8209 is a single-supply difference amplifier ideal for  
amplifying and low-pass filtering small differential voltages in the  
presence of a large common-mode voltage. The input common-  
mode voltage range extends from −2 V to +45 V at a single +5 V  
supply. The AD8209 is qualified per AEC-Q100 specifications. The  
amplifier offers enhanced input overvoltage and ESD protection,  
and includes EMI filtering.  
performance, minimizing errors in the application. Typical offset  
and gain drift in the MSOP package are less than 5 μV/°C and  
10 ppm/°C, respectively. The device also delivers a minimum  
CMRR of 80 dB from dc to 10 kHz.  
The AD8209 features an externally accessible 100 kΩ resistor at  
the output of the preamplifier (A1), which can be used for low-  
pass filtering and for establishing gains other than 14.  
Automotive applications demand robust, precision components for  
improved system control. The AD8209 provides excellent ac and dc  
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  
©2009 Analog Devices, Inc. All rights reserved.  
 

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