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AD22100KCHIPS View Datasheet(PDF) - Analog Devices

Part NameDescriptionManufacturer
AD22100KCHIPS Voltage Output Temperature Sensor with Signal Conditioning ADI
Analog Devices ADI
AD22100KCHIPS Datasheet PDF : 12 Pages
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Voltage Output Temperature Sensor
with Signal Conditioning
AD22100
FEATURES
200°C temperature span
Accuracy better than ±2% of full scale
Linearity better than ±1% of full scale
Temperature coefficient of 22.5 mV/°C
Output proportional to temperature × V+
Single-supply operation
Reverse voltage protection
Minimal self-heating
High level, low impedance output
APPLICATIONS
HVAC systems
System temperature compensation
Board level temperature sensing
Electronic thermostats
MARKETS
Industrial process control
Instrumentation
Automotive
GENERAL DESCRIPTION
The AD22100 is a monolithic temperature sensor with on-chip
signal conditioning. It can be operated over the temperature
range −50°C to +150°C, making it ideal for use in numerous
HVAC, instrumentation, and automotive applications.
The signal conditioning eliminates the need for any trimming,
buffering, or linearization circuitry, greatly simplifying the
system design and reducing the overall system cost.
The output voltage is proportional to the temperature x the
supply voltage (ratiometric). The output swings from 0.25 V at
−50°C to +4.75 V at +150°C using a single +5.0 V supply.
Due to its ratiometric nature, the AD22100 offers a cost-
effective solution when interfacing to an analog-to-digital
converter. This is accomplished by using the ADC’s +5 V
power supply as a reference to both the ADC and the AD22100
eliminating the need for and cost of a precision reference (see
Figure 2).
FUNCTIONAL BLOCK DIAGRAM
V+
VOUT
RT
Figure 1.
+5V
AD22100
SIGNAL OUTPUT
VO
DIRECT TO ADC
1k
0.1F
REFERENCE
ANALOG-TO-
DIGITAL
CONVERTER
INPUT
–50C TO +150C
Figure 2. Application Circuit
Rev. D
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
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved.
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