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AD22100K bảng dữ liệu(PDF) 1 Page - Analog Devices |
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AD22100K bảng dữ liệu(HTML) 1 Page - Analog Devices |
1 / 6 page REV. B 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 AD22100* Voltage Output Temperature Sensor with Signal Conditioning 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 times 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 effec- tive 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 (See Figure 1), eliminating the need for and cost of a precision reference. *Protected by U.S. Patent Nos. 5030849 and 5243319. SIMPLIFIED BLOCK DIAGRAM V+ VOUT Ι RT AD22100 +5V REFERENCE ANALOG TO DIGITAL CONVERTER INPUT 1k Ω VO SIGNAL OUTPUT DIRECT TO ADC 0.1µF –50 °C TO +150°C Figure 1. Application Circuit © Analog Devices, Inc., 1994 One Technology Way, P.O. Box 9106, Norwood. MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703 |
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