Overview

Features and Benefits

  • Qualified for automotive applications
  • Temperature accuracy:
     ±1°C from −55°C to +175°C (2.7V to 3.3V)
    16-bit temperature resolution: 0.0078°C
    Fast first temperature conversion on power-up of 6 ms
  • Easy implementation:
    No temperature calibration or correction required
    No linearity correction required
  • Low power:
    Power-saving 1 sample per second (SPS) mode
    880 μW typical at 3.6 V in normal mode
    9 μW typical at 3.6 V in shutdown mode
  • Wide operating ranges:
    Temperature range: −55°C to +175°C
    Voltage range: 2.7 V to 5.5 V
  • Programmable interrupts:
    Critical overtemperature interrupt
    Overtemperature/undertemperature interrupt
  • SPI-compatible interface
  • Available in die form only

Product Details

The ADT7312 is a ±1°C accurate digital temperature sensor that operates over a very wide temperature range, −55°C to +175°C available in die form only. It contains 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 ADT7312 is guaranteed to operate over supply voltages from 2.7 V to 5.5 V. At 3.6 V operation, the average supply current is typically 245 μA. The ADT7312 has a shutdown mode that powers down the device, resulting in a typical shutdown current of 2.5 μA at 3.6 V. The ADT7312 is rated for operation over the −55°C to +175°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 pin and the CT pin can operate in either comparator or interrupt mode.

Product Highlights

  1. Ease of use, no calibration or correction required.
  2. Low power consumption.
  3. Excellent long-term stability and reliability.
  4. Qualified for automotive applications.


Applications

      • Automotive
      • High temperature monitoring
      • High temperature thermal protection

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

PCN-PDN Information

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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