SPECIFICATIONS

Description

The MCP9808 digital temperature sensor converts temperatures between -20°C and + 100°C into digits with an accuracy of ± 0.25°C/ ± 0.5°C (typical value/maximum value).

The MCP9808 is equipped with user-programmable registers, providing flexibility for temperature sensing applications. These registers allow users to select Settings such as shutdown or low-power mode, as well as specifications for temperature alarm window limits and critical output limits. When the temperature change exceeds the specified boundary limit value, the MCP9808 outputs an alarm signal. Users can choose to set the polarity of the alarm output signal to a low-level effective comparator or low-level effective comparator output for thermostat operation, or they can set it to the temperature alarm interrupt output of a microprocessor-based system. The alarm output can only be configured as the critical temperature output. This sensor features an industry-standard 400kHz, 2-wire smbus/i2c compatible serial interface, allowing up to 8 or 16 sensors to be controlled using a single serial bus. These features make the MCP9808 highly suitable for complex multi-zone temperature monitoring applications.

Characteristics

Accuracy: Soil 0.25 (typical value) at -40°C to +125°C, soil 0.5°C (maximum value) at -20°C to 100°C, and soil 1°C (maximum value) within the range of 40°C to +125°C

User optional measurement resolution: - + 0.5 ° C and + 0.25 ° C and + 0.125 ° C and + 0.0625 ° C.

User-programmable temperature limit: - Temperature window limit. User-programmable temperature alarm output.

Operating voltage range: 2.7V to 5.5V.

Operating current: 200μA (typical value)

Turn-off current: 0.1 microampere (typical value)

Application

General purpose

Industrial application

Industrial refrigerators and electric refrigerators

Food processing

PC and server

PC peripherals

Consumer electronic products

Handheld/portable devices