The AS6200C is a digital temperature sensor IC which offers highly accurate measurements in the temperature range -20°C to +10°C. Aimed at designers of refrigerators and data loggers in cold-chain storage equipment, the IC’s measurements are accurate to ±0.2°C between -20°C and 10°C, the temperature range over which storage equipment for perishable goods operates. The sensor’s accuracy is guaranteed over the device’s supply voltage range of 1.8V to 3.6V.
The AS6200C 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.
In temperature control and temperature logging applications, the total error budget is made up of multiple components. 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. Hence the accuracy enabled by 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 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. It is available in production volumes. Unit pricing is €0.60 in order quantities of 1,000 units. An evaluation board for the AS6200C digital temperature sensor is available from the ams online store.
— Nitin Dahad is a European correspondent for EE Times.