Product category:
Sensors and Data Acquisition
News Release from: Microchip Technology | Subject: TC77 and TC72
Edited by the Electronicstalk Editorial
Team on 28 November 2002
Easy interfacing for thermal sensors
Microchip's newest digital thermal sensors feature an SPI interface and offer high-accuracy temperature measuring and monitoring while occupying the smallest footprint possible.
Microchip's newest digital thermal sensors feature an SPI interface and offer high-accuracy temperature measuring and monitoring while occupying the smallest footprint possible With the ability to communicate with a variety of microcontrollers and other digital ICs via three- and four-wire industry standard interfaces, the high-resolution TC77 and TC72 thermal sensors read temperatures without additional external components
This article was originally published on Electronicstalk on 10 Apr 2001 at 8.00am (UK)
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The TC72, available in 8-pin 3 x 3mm DFN and MSOP packages, and the TC77, in 8-pin SOIC and tiny 5-pin SOT-23 packages, offer significant board space savings.
The DFN package has a lower profile and significantly better thermal resistance than standard package types and simplifies manufacturing through the elimination of conventional side leads.
These new devices are capable of measuring temperature extremely accurately, with a maximum temperature error of 1C over a certain temperature range.
The TC72 reads temperatures from -55 to +125C and has an operating voltage range of 2.65 to 5.5V.
Temperature resolution is 0.25C per bit and temperature accuracy is 2C maximum over the entire -40 to +85C temperature range.
The TC77 offers the highest resolution of 0.0625C per bit, an extended temperature range of -55 to +125C and an operating voltage range of 2.7 to 5.5V.
Both sensors consume the lowest operating current (250uA typical) and have an ultra-low power shutdown mode (1uA typical) making them ideal for battery powered applications.
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