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AD8209 数据表(PDF) 1 Page - Analog Devices

部件名 AD8209
功能描述  High Voltage, Precision Difference Amplifier
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD8209 数据表(HTML) 1 Page - Analog Devices

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High Voltage,
Precision Difference Amplifier
AD8209
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
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
©2009 Analog Devices, Inc. All rights reserved.
FEATURES
±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
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
−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
FUNCTIONAL BLOCK DIAGRAM
OUT
IN+
IN–
GND
VS
+
AD8209
G = 2
G = 7
A1
A2
+
EMI
FILTER
EMI
FILTER
EMI
FILTER
Figure 1.
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.
Automotive applications demand robust, precision components for
improved system control. The AD8209 provides excellent ac and dc
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.


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