ADT7320

±0.25°C Accurate, 16-Bit Digital SPI Temperature Sensor
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Product Details

The ADT7320 is a high accuracy digital temperature sensor that offers breakthrough performance over a wide industrial temperature range, housed in a 4 mm × 4 mm LFCSP package. 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 ADT7320 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 ADT7320 has a shutdown mode that powers down the device and offers a shutdown current of typically 2.0 μA at 3.3 V. The ADT7320 is rated for operation over the −40°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 INT pin is also an open-drain output that becomes active when the temperature exceeds a programmable limit. The INT pin and CT pin can operate in either comparator or interrupt mode.

Product Highlights

  1. Ease of use, no calibration or correction required by the user.
  2. Low power consumption.
  3. Excellent long term stability and reliability.
  4. High accuracy for industrial, instrumentation, and medical applications.
  5. Packaged in a 16-lead RoHS-compliant, 4 mm x 4 mm LFCSP package.

Applications

  • 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

Product Lifecycle

checked 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.

Evaluation Kits

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EVAL-ADT7420 Circuit Diagram

Product Details

The ADT7X20 evaluation board allows designers to easily evaluate all features of the ADT7420 and ADT7320 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.


The ADT7320FBZ and ADT7420FBZ are flex boards that can be attached to the evaluation board via the breakout port or used as a standalone slave device. Both of the boards are optional extras to the standard evaluation kit.

Tools & Simulations

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Reference Designs

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CN0172 Circuit Diagram

CN0172 Photo

Design Resources

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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.

ADT7320 Material Declaration
PCN-PDN Information Quality And Reliability Symbols and Footprints

Discussions

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ADT7320 Discussions

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Reviews

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Overview

9 Reviews
8 out of 9 (88%) customers recommend this product.
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Most Helpful Review

by Herz
The package not easy for fast prototyping and the device unfortunately haven't alternative package.

Most Recent Review

by me
excellent product that fit for most designs. On the other hand, the sample program is an excellent program to promote devices for designers.

All Reviews

by me, 14 Feb 15
Excelent product
excellent product that fit for most designs. On the other hand, the sample program is an excellent program to promote devices for designers.
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by gfm, 8 Jul 14
ADT7320
we tried yesterday the first board prototypes each with two ATD7320 on board: all OK, nice device.
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by Dmitriy, 7 Jun 14
Review
Great accuracy and stability. Low price and easy to use. Thank you for this device!
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by Herz, 6 Apr 14
Not for prototyping
The package not easy for fast prototyping and the device unfortunately haven't alternative package.
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by AndrFerreira, 14 Nov 13
An easy to use temperature sensor
The ADT7320 is a really good option for yours projects, an easy to use temperature sensor that offers you a good solution for your project. I recommend this sensor.
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by aba, 12 Nov 13
Devices need to be reset
May sometimes SPI communication is not possible. Reset is required in this case.
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by Edward, 25 Oct 13
NIST Traceable?
The website says these are NIST traceable, but I do not see where I can get the NIST certificate I need for each unit.
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by heiba, 13 Aug 13
ADT7320 temperature sample review
AD has very good performance in analog design. Temperature sensor accuracy and device feature are very good.
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by gymprince, 24 Jun 13
Excellent performance
Excellent and reliable. Fast sample delivery so that project schedule can be caught up.
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Sample & Buy

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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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Evaluation Boards Pricing displayed is based on 1-piece.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.