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Industrial Electronics

Digital Temperature Sensor for Designers of Cold-storage Equipment

07 December 2017

Source: AmsSource: Ams

A new digital temperature sensor IC from Ams, a worldwide supplier of high-performance sensor solutions headquartered in Graz, Austria, offers highly accurate measurements in the temperature range of minus 20 degrees Celsius to 10 degrees Celsius.

The superior performance of the AS6200C makes it easier for designers of refrigerators and data loggers in cold-chain storage equipment to meet demanding targets for system-level accuracy. The sensor’s accuracy is guaranteed over the device’s supply voltage range of 1.8 V to 3.6 V.

By minimizing the error at the point of measurement, the designer gains extra headroom for other error and noise sources, such as the heat generated by board-mounted components. The use of the AS6200C gives the designer more flexibility to modify other elements of the system design while keeping total error below a specified maximum level.

The device integrates a sensor front end, 12-bit analog-to-digital converter and digital logic in a small WL-CSP package. It provides a digital output over an I2C interface to any host microcontroller. The device performs on-board digital signal processing, which means that it needs no user calibration, and its linearized output requires no compensation by an external microcontroller.

The AS6200C is intended for use in equipment for storing and transporting food, pharmaceuticals, flowers and other perishable goods, as well as in domestic and commercial refrigerators. It is very well suited to data loggers that comply with the EN12830:1999 class 1 standard.

The new device extends the Ams family of small, accurate digital temperature sensor ICs, joining the AS6200 sensor, which achieves peak accuracy between 0 and 65 degrees Celsius.

“The AS6200C offers the market a unique combination of small size — its footprint is only 1.5 mm2 — very high accuracy over the cold-chain monitoring and storage temperature range, and a convenient digital output requiring no calibration or linearization. It provides a new example of the value of the low-noise, high-sensitivity, high-linearity semiconductor technology underlying the outstanding performance of Ams’ sensor solution products,” said Nikolai Haslebner, Marketing Manager at Ams.

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