±0.5°C Accurate, 16-Bit Digital SPI Temperature Sensor
The ADT7310 is a high accuracy digital temperature sensor in a narrow SOIC package. It contains a band gap temperature reference and a 13-bit ADC to monitor and digitize the temperature to a 0.0625°C resolution. The ADC resolution, by default, is set to 13 bits (0.0625 °C). This can be changed to 16 bits (0.0078 °C) by setting Bit 7 in the configuration register (Register Address 0x01).
The ADT7310 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 ADT7310 has a shutdown mode that powers down the device and offers a shutdown current of typically 2 μA. The ADT7310 is rated for operation over the −55°C to +150°C temperature range.
The CT pin is an open-drain output that becomes active when the temperature exceeds a programmable critical temperature limit. The default critical temperature limit is 147°C. The INT pin is also an open-drain output that becomes active when the temperature exceeds a programmable limit. The INT and CT pins can operate in either comparator or interrupt mode.
- Medical equipment
- Environmental control systems
- Computer thermal monitoring
- Thermal protection
- Industrial process control
- Power system monitors
- Hand-held applications
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The ADT7X10 evaluation board allows designers to easily evaluate all features of the ADT7310 and ADT7410 high accuracy temperature sensor. There are two boards - the main evaluation board and the secondary evaluation board. The secondary board can be used to measure temperatures that are remote from the main board.