MCP9800 Digital temperature sensor block diagram

The MCP9800 is a digital CMOS silicon temperature sensor that provides an accurate digital temperature measurement. Data is converted from an internal diode temperature-sensing element to a digital format that can be directly interfaced to a PICmicro® microcontroller unit (MCU). The MCP9800 sensor offers many system-level advantages, including the integration of the sensor and signal-conditioning circuitry in a small Integrated Circuit (IC) package. The MCP9800 also has a One-Shot Conversion mode that performs a single temperature measurement and then goes into power-saving Shutdown mode. The One-shot Conversion mode makes this sensor a good choice for power-critical, portable applications. 

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