Digital Temperature Sensors Achieve High Accuracy
Analog Devices introduced two fully calibrated, 16-bit-resolution, high-linearity digital temperature sensors that are asserted to achieve the industry’s highest level of precision over a wide operating temperature range. The high-precision, low-drift ADT7420 and ADT7320 digital temperature sensors achieve ±0.25ºC accuracy over a –20ºC to +105ºC temperature range and ±0.5ºC accuracy over the –40°C to +125°C temperature range. The higher accuracy eliminates the need to average results, ensuring faster data measurement, higher-precision control loops, and improved energy efficiency and reliability in industrial, instrumentation, and medical applications. The new digital temperature sensors also provide accurate system reference temperature measurement to reduce errors in software-based, thermocouple cold-junction compensation applications and infrared imaging systems. The ADT7420 and ADT7320 digital temperature sensors 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 allow system designers to integrate the devices into data acquisition, optical communications, environmental control systems, medical equipment, or food and pharmaceutical temperature monitors.