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Microchip Introduces World’s First Temp Sensor Family With 1.8V SMBus And I2C™ Interface For Latest Smartphone, Tablet And PC Chipsets

Microchip Technology Inc. (NASDAQ: MCHP), a leading provider of microcontroller, mixed-signal, analog and Flash-IP solutions, today announced a new six-member family of temperature sensor ICs called the EMC118X. This is the world’s first family of temp sensors with 1.8V SMBus and I 2C™ communications, which is required for interfacing to the latest generation of smartphone, tablet and PC chipsets. Additionally, this integrated low-voltage I/O support reduces cost and board space because it is accomplished without an external voltage level shifter. These are also the first temp sensors to 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 serves a broad range of applications in the mobile, commercial and embedded computing markets, by combining 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 I 2C/SMBus interfaces, and the EMC118X is the first family to provide this capability, along with a flexible set of integrated feature options. It is also difficult to extend analog traces near noisy components, such as DC/DC converters and backlight inverters. 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.

“We continue to expand our thermal-management portfolio, which is one of the most extensive in the industry,” said Bryan J. Liddiard, marketing vice president of Microchip’s Analog and Interface Products Division. “1.8V communication compatibility has become important for all leading system chipsets, from tablets to PCs to smartphones, and this new temp sensor family meets that need while providing many other advanced features.”

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