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ADT7320:  ±0.25°C Accurate, 16-Bit Digital SPI Temperature Sensor

Product Details

Product Status:Recommended for New Designs

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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

FEATURES and BENEFITS

  • High Performance
    Temperature accuracy
    ±0.20°C from −10°C to +85°C
    ±0.25°C from −20°C to +105°C at 3.3 V
    16-bit resolution: 0.0078°C
    Ultralow temperature drift: 0.0073°C
  • Easy Implementation
    No temperature calibration/correction required by user
    No linearity correction required
  • Low Power
    Power saving 1 sample per second (SPS) mode
    700 μW typical at 3.3 V in normal mode
    7 μW typical at 3.3 V in shutdown mode
  • Wide operating ranges
    Operating temperature from −40°C to +150°C
    Voltage range: 2.7 V to 5.5 V
  • Programmable interrupts
    Critical overtemperature indicator
    Overtemperature/undertemperature interrupt
  • SPI-compatible interface
  • 16-lead, RoHS-compliant, 4 mm × 4 mm LFCSP package
  • See data sheet for additional features

Functional Block Diagram for ADT7320

Similar Products

  • ADT7420: ±0.25°C Accurate, 16-Bit Digital I2C Temperature Sensor
  • ADT7310: ±0.5°C Accurate, 16-Bit Digital SPI Temperature Sensor
  • ADT7410: ±0.5°C Accurate, 16-Bit Digital I2C Temperature Sensor

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Documentation

Title Content Type File Type
ADT7320: ±0.25°C Accurate, 16-Bit Digital SPI Temperature Sensor Data Sheet (Rev 0, 12/2012) (pdf, 270 kB) Data Sheets PDF
CN-0172: High Accuracy Multichannel Thermocouple Measurement Solution  (pdf, 319 kB) Circuit Note PDF
ADT7320 / ADT7420: High Accuracy Digital Temp Sensors
The ADT7320 (SPI I/F) and the ADT7420 (I2C I/F) are high accuracy digital temperature sensors that offer 0.25C accuracy from -20C to 105C. No calibration is required for these 16 bit resolution temperature sensors.
Videos HTML
UG-138: Evaluating the ADT7320/ADT7420 Temperature Sensors  (pdf, 927 kB) User Guides PDF
Home is Where the Heart Is (positioning paper)  (pdf, 577 kB) Technical Articles PDF
RAQs index Rarely Asked Questions HTML
ADT7320/ADT7420: Digital Temperature Sensors FAQ  (pdf, 657 kB) FAQs/RAQs PDF
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
ADT7320 IBIS Model  (ibs) IBIS Models IBS

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

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Price, packaging, availability

ADT7320 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADT7320UCPZ-R2 Status: Contact ADI 16 ld LFCSP 4x4 16 Mil Reel, 250 - $3.10 Y  Material Info PCN Purchase
ADT7320UCPZ-RL7 Status: Production 16 ld LFCSP 4x4 16 Mil Reel, 1500 - $3.10 Y  Material Info PCN Purchase Sample
Price Table Help

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.

ADT7420 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-ADT7320FBZ Status: Production Flex Evaluation Board $45.00 Yes -
EVAL-ADT7420FBZ Status: Production Flex Evaluation Board $45.00 Yes -
EVAL-ADT7X20EBZ Status: Production Evaluation Board $59.00 Yes -

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.

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