March 29, 2016 - Microchip introduces MCP990X temperature sensors for monitoring up to four channels in cold, outdoor and industrial low-temperature applications ranging from freezers and refrigerators to base stations and remote radio units
With ±1°C maximum accuracy for both external and internal diode temperatures from -40°C to +65°C, these ICs provide a low-cost, highly flexible solution where precision is needed at lower temperatures.
Advanced features of the MCP990X family include remote diode temperature measurement with resistance error correction that compensates for voltage drops from connectors and long board traces, enabling accurate readings of up to 20 inches away from the IC. Injected system noise from components such as DC-DC converters and backlight inverters is also minimised with a sample-frequency hopping filter, allowing for easier placement and routing. The combination of these features with options for dual, triple and quad temperature monitoring provides for a wider range of measurement opportunities for an entire system with a single IC.
Compact package options that take up less silicon space on the PCB and allow for smaller system solutions and better product design for temperature critical applications include a 2x2 footprint for the MCP9902 dual channel temperature sensor.
The MCP9902 Evaluation Board (part # ADM00615) enables development with the MCP9902 low temp sensor. The MCP9902 is offered in an 8-pin, 2x2 WDFN package. The MCP9903 and MCP9904 are available in a 10-pin, 3x3 DFN package.
