The Analog Devices ADT7320 and ADT7420 are high-accuracy digital temperature sensors offering breakthrough performance over a wide industrial temperature range, housed in a 4 mm × 4 mm LFCSP package. The devices contain an internal band gap reference, a temperature sensor, and a 16-bit analog-to-digital converter (ADC) to monitor and digitize the temperature to a resolution of 0.0078°C. The ADC resolution, by default, is set to 13 bits (0.0625°C). The ADC resolution is a user programmable mode that can be changed through the serial interface.
The ADT7x20 is guaranteed to operate over supply voltages from 2.7 V to 5.5 V. Operating at 3.3 V, the average supply current is typically 210 μA. The ADT7x20 has a shutdown mode that powers down the device and offers a shutdown current of typically 2.0 μA at 3.3 V. The ADT7x20 is rated for operation over the -40°C to +150°C temperature range.
- RTD and thermistor replacement
- Thermocouple cold junction compensation
- Medical equipment
- Industrial controls and test
- Food transportation and storage
- Environmental monitoring and HVAC
- Laser diode temperature controls