AD22100 Datasheet | Analog Devices

FEATURES 200°C Temperature Span Accuracy Better than ± 2% of Full Scale Linearity Better than ± 1% of Full Scale Temperature Coefficient of 22.5 m V/°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 pensation Board Level Temperature Sensing Electronic Thermostats MARKETS Industrial Process Control Instrumentation Automotive GENERAL DESCRIPTION Voltage Output Temperature Sensor with Signal Conditioning AD22100- SIMPLIFIED BLOCK DIAGRAM V+ Ι VOUT RT +5V 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 effective solution when interfacing to an analog-to-digital converter. This is acplished 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 . VO SIGNAL OUTPUT DIRECT TO ADC 1kΩ REFERENCE ANALOG TO DIGITAL CONVERTER INPUT 0.1µF - 50°C TO +150°C Figure 1. Application Circuit 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...