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AD22055R Arkusz danych(PDF) 1 Page - Analog Devices

Numer części AD22055R
Szczegółowy opis  Single Supply Bridge Transducer Amplifier
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AD22055R Arkusz danych(HTML) 1 Page - Analog Devices

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FUNCTIONAL BLOCK DIAGRAM
AD22055
OUT
GAIN
IN+
IN–
+VS
OFS
FILT
A1
8
1
7
3
2
A2
4
5
6
GND
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
Single Supply Bridge
Transducer Amplifier
AD22055
FEATURES
Gain of 400. Alterable from 40 to 1000
Output Span 20 mV to (VS – 0.25) V
1 Pole Low-Pass Filtering Available
Offset Capability
Differential Input Resistance 230 k
Drives 1 k
Load to +4 V Using VS = +5 V
Supply Voltage: +3 V to +36 V
Transient Spike Protection and RFI Filters Included
Peak Input Voltage (40 ms): 60 V
Reversed Supply Protection: –34 V
Operating Temperature Range: –40 C to +125 C
APPLICATIONS
Interface for Pressure Transducers, Position
Indicator, Strain Gages and Other Low Level Signal
Sources
GENERAL DESCRIPTION
The AD22055 accepts a differential signal from a bridge trans-
ducer whose common-mode signal can be anywhere between
the power supplies.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
World Wide Web Site: http://www.analog.com
Fax: 617/326-8703
© Analog Devices, Inc., 1997
The extended temperature range allows for local signal condi-
tioning for oil and hydraulic pressure sensors as well as other
automotive sensors.
The use of an external gain resistor allows the user to compen-
sate transducer gain error and temperature drift.
VREF
AD22055
IN+ OFS +VS OUT
IN– GND FILT GAIN
123
4
5
6
7
8
1k
+5 VOLT
OUTPUT
ANALOG
GROUND
GAIN = 400
Figure 1. Typical Application Circuit for a Pressure Sensor Interface


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