Ad22151线性输出磁场传感器FEATURES FUNCTIONAL BLOCK DIAGRAMAdjustable Offset to Unipolar or Bipolar OperationLow Offset Drift over Temperature RangeGain Adjustable over Wide RangeRE FVC C/ 2Low Gain Drift over Temperature RangeAdjustable Firs

Ad22151线性输出磁场传感器FEATURES FUNCTIONAL BLOCK DIAGRAMAdjustable Offset to Unipolar or Bipolar OperationLow Offset Drift over Temperature RangeGain Adjustable over Wide RangeRE FVC C/ 2Low Gain Drift over Temperature RangeAdjustable Firs
Ad22151线性输出磁场传感器
FEATURES FUNCTIONAL BLOCK DIAGRAM
Adjustable Offset to Unipolar or Bipolar Operation
Low Offset Drift over Temperature Range
Gain Adjustable over Wide Range
RE F
VC C/ 2
Low Gain Drift over Temperature Range
Adjustable First Order Temperature Compensation
TE M P RE F
Ratiometric to VC C O UT A M P
AD22151
APPLICATIONS
Automotive
I SO U RC E
Throttle Position Sensing
Pedal Position Sensing
Suspension Position Sensing
DE M O D S W I TC HE S
Valve Position Sensing
Industrial
Absolute Position Sensing
Proximity Sensing
VCC
GENERAL DESCRIPTION
NC
The AD22151 is a linear magnetic field transducer.The sensor
output is a voltage proportional to a magnetic field applied
R1 R 2
perpendicularly to the package top surface.
The sensor combines integrated bulk Hall cell technology and
0.1 F
instrumentation circuitry to minimize temperature related drifts
R 3
associated with silicon Hall cell characteristics.The architecture
maximizes the advantages of a monolithic implementation while
OU TPU T
allowing sufficient versatility to meet varied application require-
ments with a minimum number of components.
AD22151
N C = NO C ON NECT
G ND
Principal features include dynamic offset drift cancellation
and a built-in temperature sensor.Designed for single 5 V
Figure 1.Typical Bipolar Configuration with Low
supply operation,the AD22151 achieves low drift offset and
(< ¨C500 ppm) Compensation
gain operation over ¨C40¡ÞC to +150¡ÞC.Temperature compensa-
tion can accommodate a number of magnetic materials commonly
utilized in economic position sensor assemblies.
VC C
The transducer can be configured for specific signal gains to R1
meet various application requirements.Output voltage can be
adjusted from fully bipolar (reversible) field operation to fully
R 4
unipolar field sensing.
NC
R2
The voltage output achieves near rail-to-rail dynamic range,
0 .1 F
capable of supplying 1 mA into large capacitive loads.The
R 3
signal is ratiometric to the positive supply rail in all configurations.
O UT PUT
AD22151
N C = NO CO NNEC T
GN D
Figure 2.Typical Unipolar Configuration with
High ( ¨C2000 ppm) Compensation
REV.A
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
One Technology Way,P.O.Box 9106,Norwood,MA 02062-9106,U.S.A.
may result from its use.No license is granted by implication or otherwise
Tel:781/329-4700 www.analog.com
under any patent or patent rights of Analog Devices.Trademarks and
registered trademarks are the property of their respective companies.Fax:781/326-8703 2003 Analog Devices,Inc.All rights reserved..
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Ad22151线性输出磁场传感器FEATURES FUNCTIONAL BLOCK DIAGRAMAdjustable Offset to Unipolar or Bipolar OperationLow Offset Drift over Temperature RangeGain Adjustable over Wide RangeRE FVC C/ 2Low Gain Drift over Temperature RangeAdjustable Firs
Throttle Position Sensing
Pedal Position Sensing
Suspension Position Sensing
DE M O D S W I TC HE S
Valve Position Sensing
Industrial
Absolute Position Sensing
Proximity Sensing

FEATURES FUNCTIONAL BLOCK DIAGRAM
Adjustable Offset to Unipolar or Bipolar Operation
Low Offset Drift over Temperature Range
Gain Adjustable over Wide Range
RE F
VC C/ 2
...

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FEATURES FUNCTIONAL BLOCK DIAGRAM
Adjustable Offset to Unipolar or Bipolar Operation
Low Offset Drift over Temperature Range
Gain Adjustable over Wide Range
RE F
VC C/ 2
Low Gain Drift over Temperature Range
Adjustable First Order Temperature Compensation
TE M P RE F
Ratiometric to VC C O UT A M P
AD22151
APPLICATIONS
Automotive
I SO U RC E
Throttle Position Sensing
Pedal Position Sensing
Suspension Position Sensing
DE M O D S W I TC HE S
Valve Position Sensing
Industrial
Absolute Position Sensing
Proximity Sensing

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FEATURES FUNCTIONAL BLOCK DIAGRAM
Adjustable Offset to Unipolar or Bipolar Operation
Low Offset Drift over Temperature Range
Gain Adjustable over Wide Range
RE F
VC C/ 2
...

全部展开

FEATURES FUNCTIONAL BLOCK DIAGRAM
Adjustable Offset to Unipolar or Bipolar Operation
Low Offset Drift over Temperature Range
Gain Adjustable over Wide Range
RE F
VC C/ 2
Low Gain Drift over Temperature Range
Adjustable First Order Temperature Compensation
TE M P RE F
Ratiometric to VC C O UT A M P
AD22151
APPLICATIONS
Automotive
I SO U RC E
Throttle Position Sensing
Pedal Position Sensing
Suspension Position Sensing
DE M O D S W I TC HE S
Valve Position Sensing
Industrial
Absolute Position Sensing
Proximity Sensing

收起