The MCP9802A5T-M/OT is a digital temperature sensor capable of reading temperatures from -55°C to +125°C. Temperature data is measured from an integrated temperature sensor and converted to digital word with a user selectable 9 to 12-bit Sigma Delta Analog to Digital Converter.The MCP9802A5T-M/OT notifies the host controller when the ambient temperature exceeds a user programmed set point. The ALERT output is programmable as either a simple comparator for thermostat operation or as a temperature event interrupt. Communication with the sensor is accomplished via a two-wire bus that is compatible with industry standard protocols. This permits reading the current temperature, programming the set point and hysteresis, and configuring the device. The MCP9802A5T-M/OT also contains SMBus Timeout logic for improved system reliability.Small physical size, low installed cost, and ease of usemake the MCP9802A5T-M/OT an ideal choice for implementingsophisticated temperature system management schemes in a variety of applications.

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