Sensors

First temperature sensors with 1.8V SMBus and I2C

15th August 2013
Nat Bowers
0
Datasheets

Microchip Technology have today introduced a new family of temperature sensor ICs, the six-member EMC118X family. The new EMC118X family are the first ever temperature sensors with 1.8V SMBus and I2C communication, which is required for interfacing to the latest generation of smartphone, tablet and PC chipsets.

Accomplished without an external voltage level shifter, this integrated low-voltage I/O support reduces cost and board space. Enabling accurate readings using temperature-monitoring traces of up to 8 inches in noisy environments, the EMC118X family are also the first temperature sensors utilising an advanced sample-frequency-hopping filter. Ideal for a wide range of applications in the mobile, commercial and embedded computing markets, the new temperature sensors feature options for dual, triple and quad temperature monitoring, in addition to hardwired system-shutdown settings that cannot be overridden by software.

Featuring a 1.8V upper voltage limit for I/O signals, the latest generation of smartphone, tablet and PC chipsets utilise advanced process geometries. The EMC118X is the first family to provide this 1.8V I2C/SMBus interface capability, in addition to a flexible set of integrated feature options. It is also difficult to extend analogue traces near noisy components, such as DC-DC converters and backlight inverters. Employing frequency-hopping on the sampling frequency, the EMC118X family avoids the injection of coherent noise and enables traces of up to 8 inches while maintaining accurate temperature readings.

Microchip has also introduced the EMC1182 Evaluation Board (ADM00516) to enable development with these new temperature sensors. This board is available now, priced at $29.99 each.

All six members of the EMC118X temp sensor family are available today for sampling and volume production. 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; whilst the EMC1186 is offered in an 8-pin TDFN package.

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