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
|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|
|CN-0172: High Accuracy Multichannel Thermocouple Measurement Solution (pdf, 319 kB)||Circuit Note|
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.
|UG-138: Evaluating the ADT7320/ADT7420 Temperature Sensors (pdf, 927 kB)||User Guides|
|Home is Where the Heart Is (positioning paper) (pdf, 577 kB)||Technical Articles|
|Peak High-speed Performance even at low power. It's why more engineers choose ADI Data Converters.||Solutions Bulletins||HTML|
|RAQs index||Rarely Asked Questions||HTML|
|ADT7320/ADT7420: Digital Temperature Sensors FAQ (pdf, 657 kB)||FAQs/RAQs|
|Glossary of EE Terms||Glossary||HTML|
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.