Digital temperature sensors achieve 'highest accuracy over widest temperature range'

The ADT7420 and ADT7320 digital temperature sensors are said to achieve +/-0.25^°C accuracy over a –20 to 105^°C temperature range. According to ADI, the sensors also offer 'industry leading' +/-0.5^ºC accuracy over the –40 to 125^°C temperature range. The higher accuracy eliminates the need to average results and means the sensors are suitable for industrial, instrumentation, and medical applications. The digital temperature sensors also provide system reference temperature measurement to reduce errors in software-based, thermocouple cold-junction compensation applications and infrared imaging systems. Both devices are plug-in ready and require no additional signal conditioning or calibration. The offerings are available with I²C (ADT7420) or SPI (ADT7320) digital interfaces, which are designed to allow integration into data acquisition, optical communications, environmental control systems, medical equipment, or food and pharmaceutical temperature monitors. ADI's new digital temperature sensors are guaranteed to operate over supply voltages from 2.7 to 5.5V with an operating temperature range of –40 to 150^°C. Both devices are sampling now.