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ADT7408:  ± 2°C Accurate, 12-Bit Digital Temperature Sensor

Product Details


The ADT7408 is the first digital temperature sensor that complies with JEDEC standard JC-42.4 for Mobile Platform Memory Module. The ADT7408 contains a band gap temperature sensor and 12-bit ADC to monitor and digitize the temperature to a resolution of 0.0625°C.

There is an open-drain Event# output that is active when the monitoring temperature exceeds a critical programmable limit or the temperature falls above or below an alarm window. This pin can operate in either comparator or interrupt mode. There are three slave-device address pins that allows up to eight ADT7408s to be used in a system that monitors temperature of various components and subsystems.

The ADT7408 is specified for operation at supply voltages from 3.0 V to 3.6 V. Operating at 3.3 V, the average supply current is less than typically 240μA. The ADT7408 offers a shutdown mode that powers down the device and gives a shutdown current of typically 3 μA. The ADT7408 is rated for operation over the –20°C to +125°C temperature range. The ADT7408 is available in lead-free 8-lead LFCSP 3mm x 3mm (JEDEC MO- 229 VEED-4) package.

Applications

  • Memory Module Temperature Monitoring
  • Isolated Sensors
  • Environmental Control Systems
  • Computer Thermal Monitoring
  • Thermal Protection
  • Industrial Process Control
  • Power-system Monitors
  • Hand Held Applications

FEATURES and BENEFITS

  • 12-bit Temperature-to-digital Converter
  • ± 2°C Accuracy Typ
  • Operation from −20°C to +125°C
  • Operation from 3 V to 3.6 V
  • Average Supply Current (500μA max)
  • Selectable 0, 1.5°C, 3°C, 6°C Hysteresis
  • SMBus-/I2C-Compatible Interface
  • Dual Purpose Event Pin: Comparator or Interrupt
  • 8-pin LFCSP 3mm x 3mm (JEDEC MO-229 VEED-4) Package
  • Complies with JEDEC Standard JC-42.4 Memory Module
  • Thermal Sensor Component Specification

Functional Block Diagram for ADT7408

Documentation

Title Content Type File Type
ADT7408: ±2°C Accurate, 12-Bit Digital Temperature Sensor Data Sheet (Rev 0, 05/2006) (pdf, 452 kB) Data Sheets PDF
Selection Guide: Temperature Sensors  (pdf, 807 kB) Overview PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Evaluation Kits & Symbols & Footprints

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

SampleSample & Buy

Price, packaging, availability

ADT7408 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADT7408CCPZ-REEL Status: Last Time Buy 8 ld LFCSP (3x3mm) 8 Ind Reel, 5000 - $0.87 Y  Material Info PCN/PDN Purchase
ADT7408CCPZ-REEL7 Status: Production 8 ld LFCSP (3x3mm) 8 Ind Reel, 1500 - $0.87 Y  Material Info PCN Purchase
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.


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