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

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 ...More

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

Product Description

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

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    • 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
    • Output Type: Digital
    • Sensor Output: I²C ®,SMBus
    • Temp Res(°C/LSB): 0.0625°C/LSB
    • Supply Voltage Range: +3V to +3.6V
    • Temp Range(s): -20 to +125

    Functional Block Diagram for ADT7408

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    AD7416 0.25 n/a 10 0 --- I2C, Serial -40 to +125 +2.7V to +5.5V 10-Bit Temperature-to-Digital Converter, -40°C to +125°C, ±2°C Accuracy $1.00 I²C ® 1mA
    AD7314 0.25 ±1 10 0 --- Serial, SPI -35 to +85 +2.65V to +5.5V Low Voltage, 10-Bit Digital Temperature Sensor in 8-Lead µSOP $0.66 DSP Serial, MICROWIRE (TM), QSPI (TM), SPI (TM) 300µA
    AD7818 0.25 ±1 10 1 --- Serial, SPI -40 to +85 +2.7V to +5.5V 9 µs, 10-Bit ADC w/ On-Chip Temperature Sensor & Over-Temperature Output $2.34 MICROWIRE (TM), QSPI (TM), SPI (TM) 2mA
    AD7418 0.25 ±1 10 2 --- I2C, Serial -40 to +125 +2.7V to +5.5V 10-Bit ADC, Programmable Hi-Low Temp Limits w/ Over-Temp Alert, , Auto Pwr Dwn @ EOC $2.34 I²C ® 600µA
    ADT7316 0.25 ±0.5 10 3 12-Bit x 4 I2C, I2C/SPI, Serial, SM Bus, SPI -40 to +120 +2.7V to +5.5V SPI/I2C® Compatible,10-Bit Digital Temperature Sensor With Quad Voltage-Output 12-Bit DAC $3.72 I²C ®, QSPI (TM), SMBus, SPI (TM) 3mA
    ADT7317 0.25 ±0.5 10 3 10-Bit x 4 I2C, I2C/SPI, SM Bus, SPI -40 to +120 +2.7V to +5.5V SPI/I2C® Compatible,10-Bit Digital Temperature Sensor w/ Quad 10-Bit Voltage Output DAC $3.65 DSP Serial, I²C ®, MICROWIRE (TM), QSPI (TM), SMBus, SPI (TM) 3mA
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    AD7817 0.25 ±1 10 4 --- Serial, SPI -40 to +85 +2.7V to +5.5V 4-Channel, 9 µs, 10-Bit ADC with On-Chip Temperature Sensor & Over-Temperature Flag $3.29 MICROWIRE (TM), QSPI (TM), SPI (TM) 2mA
    AD7417 0.25 ±1 10 5 --- I2C, Serial -40 to +125 +2.7V to +5.5V 4-Channel, 10-Bit ADC w/ on-Chip Temperature Sensor, Programmable Setpoints, and Overtemp Flag Out $2.99 I²C ® 600µA
    ADT7516 0.25 n/a 10 7 12-Bit x 4 I2C/SPI, Serial, SPI -40 to +120 +2.7V to +5.5V SPI/I2C Compatible Temperature Sensor w/10-Bit-4-Ch ADC & Quad 12-Bit Voltage DAC Control Outputs $3.72 I²C ®, SPI (TM) 3mA
    ADT7517 0.25 n/a 10 7 10-Bit x 4 I2C/SPI, Serial, SPI -40 to +120 +2.7V to +5.5V SPI/I2C Compatible Temperature Sensor w/10-Bit-4-Ch ADC & Quad 10-Bit Voltage DAC Control Outputs $3.65 DSP Serial, I²C ®, SPI (TM) 3mA
    ADT7519 0.25 n/a 10 7 8-Bit x 4 I2C/SPI, Serial -40 to +120 +2.7V to +5.5V SPI/I2C Compatible Temperature Sensor w/10-Bit-4-Ch ADC & Quad 8-Bit Voltage DAC Control Outputs $3.56 DSP Serial, I²C ®, SPI (TM) 3mA
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    • Commercial: 0 to +70 degrees Celsius
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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.
    **Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.