MCP9808

MCP9808 ±0.5°C Maximum Accuracy Digital Temperature Sensor Features Accuracy: - ±0.25 (typical) from -40°C to +125°C - ±0.5°C (maximum) from -20°C to 100°C - ±1°C (maximum) from -40°C to +125°C User-Selectable Measurement Resolution: - +0.5°C, +0.25°C, +0.125°C, +0.0625°C User-Programmable Temperature Limits: - Temperature Window Limit - Critical Temperature Limit User-Programmable Temperature Alert Output Operating Voltage Range: 2.7V to 5.5V Operating Current: 200 µA (typical) Shutdown Current: 0.1 µA (typical) 2-wire Interface: I2C™/SMBus Compatible Available Packages: 2x3 DFN-8, MSOP-8 Description Microchip Technology Inc.’s MCP9808 digital temperature sensor converts temperatures between -20°C and +100°C to a digital word with ±0.25°C/±0.5°C (typical/maximum) accuracy. The MCP9808 comes with user-programmable registers that provide flexibility for temperature sensing applications. The registers allow user-selectable settings such as Shutdown or Low-Power modes and the specification of temperature Alert window limits and critical output limits. When the temperature changes beyond the specified boundary limits, the MCP9808 outputs an Alert signal. The user has the option of setting the Alert output signal polarity as an active-low or activehigh comparator output for thermostat operation, or as a temperature Alert interrupt output for microprocessorbased systems. The Alert output can also be configured as a critical temperature output only. This sensor ha...