The EMC118X family of temperature sensor ICs from Microchip Technology Inc. have 1.8V SMBus and I2C communications, required for interfacing to the latest generation of smartphone, tablet and PC chipsets. This integrated low-voltage I/O support reduces cost and board space because it is accomplished without an external voltage level shifter. These sensors use an advanced sample-frequency-hopping filter, which enables temperature-monitoring traces of up to 8 inches in noisy environments with accurate readings. The EMC118X family combines the above features with options for dual, triple and quad temperature monitoring, along with hardwired system-shutdown settings that can’t be overridden by software.
The latest generation of smartphone, tablet and PC chipsets utilize advanced process geometries, which have a 1.8V upper voltage limit for I/O signals. There are few temperature sensors with 1.8V I2C/SMBus interfaces, and according to Microchip the EMC118X is the first family to provide this capability along with a flexible set of integrated feature options. The EMC118X family employs frequency-hopping on the sampling frequency, which avoids the injection of coherent noise and enables traces of up to 8 inches while maintaining accurate temperature readings.
The EMC1182 Evaluation Board (part # ADM00516) enables development with these new temp sensors.
All six members of the EMC118X temp sensor family are available today for sampling and volume production, starting at $0.51 each in 5,000-unit quantities. The EMC1182 is offered in 8-pin DFN and TDFN packages. The EMC1183, EMC1184, EMC1187 and EMC1188 are all available in a 10-pin DFN package. The EMC1186 is offered in an 8-pin TDFN package.