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AD22100SR-REEL7 Scheda tecnica(PDF) 1 Page - Analog Devices |
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AD22100SR-REEL7 Scheda tecnica(HTML) 1 Page - Analog Devices |
1 / 12 page Voltage Output Temperature Sensor with Signal Conditioning AD22100 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. 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. AD22100 +5V REFERENCE ANALOG-TO- DIGITAL CONVERTER INPUT 1k VO SIGNAL OUTPUT DIRECT TO ADC 0.1 F –50 C TO +150C Figure 2. Application Circuit |
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