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MAX6694

5-Channel Precision Temperature Monitor with Beta Compensation

Monitors One Local and Four Remote Temperatures, Including a Sub-65nm, Low-Beta Thermal Transistor

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Active: In Production.

Description

The MAX6694 precision multichannel temperature sensor monitors its own temperature and the temperatures of up to four external diode-connected transistors. All temperature channels have programmable alert thresholds. Channels 1 and 4 also have programmable overtemperature thresholds. When the measured temperature of a channel exceeds the respective threshold, a status bit is set in one of the status registers. Two open-drain outputs, active-low OVERT and active-low ALERT, assert corresponding to these bits in the status register.

The 2-wire serial interface supports the standard system management bus (SMBus™) protocols: write byte, read byte, send byte, and receive byte for reading the temperature data and programming the alarm thresholds.

The MAX6694 is specified for a -40°C to +125°C operating temperature range and is available in 16-pin TSSOP and 5mm x 5mm thin QFN packages.
 

Data Sheet

Download this datasheet in PDF formatDownload Rev 0 (PDF, 204kB)
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Key Features

  • Four Thermal-Diode Inputs
  • Beta Compensation (Channel 1)
  • Local Temperature Sensor
  • 1.5°C Remote Temperature Accuracy (+60°C to +100°C)
  • Temperature Monitoring Begins at POR for Fail-Safe System Protection
  • Active-Low ALERT and Active-Low OVERT Outputs for Interrupts, Throttling, and Shutdown
  • Active-Low STBY Input for Hardware Standby Mode
  • Small, 16-Pin TSSOP and TQFN Packages
  • 2-Wire SMBus Interface
 

Applications/Uses

  • Desktop Computers
  • Notebook Computers
  • Servers
  • Workstations
   

Key Specifications:

Temperature Sensors
Part Number Sensor Type Alarm Output Functions Interface Remote Chan. Accuracy
(±°C)
Parasite Pwr. Temp. Thresh. Temp. Resolution
(bits)
Oper. Temp.
(°C)
Smallest Available Pckg.
(mm2)
Budgetary Price
max w/pins See Notes
MAX6694  Remote
Alert
Overt
Beta Compensation
Dual Temperature Alarms
Dual Temperature Sensor
Remote & Local Sensor
2-Wire/I2C/SMBus Quad 1.5 No Programmable
8
11
-40 to +125 26 $3.00 @1k
See All Temperature Sensors (103)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


Diagram

MAX6694: Typical Application Circuit
Typical Application Circuit

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Document Ref.: 19-4097 Rev 0; 2008-05-14
This page last modified: 2009-07-31




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