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AD8479ARZ-RL 데이터시트(PDF) 1 Page - Analog Devices

부품명 AD8479ARZ-RL
상세설명  Very High Common-Mode Voltage Precision Difference Amplifier
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제조업체  AD [Analog Devices]
홈페이지  http://www.analog.com
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Very High Common-Mode Voltage
Precision Difference Amplifier
Data Sheet
AD8479
Rev. 0
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
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
©2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
FEATURES
±600 V common-mode voltage range
Rail-to-rail output
Fixed gain of 1
Wide power supply range of ±2.5 V to ±18 V
550 μA typical power supply current
Excellent ac specifications
90 dB minimum CMRR
130 kHz bandwidth
High accuracy dc performance
5 ppm maximum gain nonlinearity
10 µV/°C maximum offset voltage drift
5 ppm/°C maximum gain drift
APPLICATIONS
High voltage current sensing
Battery cell voltage monitors
Power supply current monitors
Motor controls
Isolation
GENERAL DESCRIPTION
The AD8479 is a difference amplifier with a very high input
common-mode voltage range. The AD8479 is a precision device
that allows the user to accurately measure differential signals in
the presence of high common-mode voltages up to ±600 V.
The AD8479 can replace costly isolation amplifiers in applications
that do not require galvanic isolation. The device operates over
a ±600 V common-mode voltage range and has inputs that are
protected from common-mode or differential mode transients
up to ±600 V.
The AD8479 has low offset voltage, low offset voltage drift,
low gain drift, low common-mode rejection drift, and excellent
common-mode rejection ratio (CMRR) over a wide frequency
range.
The AD8479 is available in a space-saving 8-lead SOIC package
and is operational over the −40°C to +125°C temperature range.
FUNCTIONAL BLOCK DIAGRAM
2
3
4
1
7
6
8
REF(–)
–IN
1MΩ
AD8479
1MΩ
+IN
–VS
NC
NOTES
1. NC = NO CONNECT. DO NOT CONNECT TO THIS PIN.
+VS
OUTPUT
5
REF(+)
Figure 1.
–800
–600
–400
–200
0
200
400
600
800
–20
–15
–10
–5
0
5
10
15
20
VOUT (V)
VS = ±15V
VS = ±5V
Figure 2. Input Common-Mode Voltage vs. Output Voltage


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