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MAX6662
12-Bit + Sign Temperature Sensor with SPI-Compatible Serial Interface


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Status
Active: In Production.

Description
FULL DATA SHEET (PDF, 184kB)
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The MAX6662 is a 12-bit + sign temperature sensor combined with a programmable overtemperature alarm and a 3-wire (SPI™-compatible) serial interface in a single package. It converts its die temperature into digital values using an internal analog-to-digital converter (ADC). The temperature data is stored in a temperature register as a 13-bit word, which allows 0.0625° resolution. The temperature data is readable at any time through the serial interface. The operating temperature range is -55° to +150°.

The MAX6662 provides two programmable watchdog interrupt outputs. Active-Low ALERT is used for lower temperature warning functions, while active-low OT is used for higher temperature-critical functions, such as power-supply shutdown. The MAX6662 features a shutdown mode that saves power by disabling everything except the serial interface. The temperature sensor is available in an 8-pin SO package.

An evaluation kit is available:  MAX6662EVKIT  

Key Features   Applications/Uses
  • 12-Bit + Sign, 0.0625°C Resolution
  • Accuracy
    • ±1°C max (+30°C to +50°C)
    • ±1.6°C max (0°C to +70°C)
    • ±2.5°C max (-20°C to +85°C)
    • ±2.5 typ (+150°C)
  • Extended Temperature Measurement Range
    • -55°C to +150°C
  • Low Average Supply Current, 125µA (typ)
  • Shutdown Mode to Minimize Power Consumption in Portable Applications
  • Two Programmable Temperature Fault Outputs
  • Switchable Fault Queue to Eliminate False Tripping in Noisy Environments
 

Key Specifications:  Temperature Sensors
Part Number Sensor Type Alarm Output Interface Accuracy
(±°C)
Parasite Pwr. Temp. Thresh. Temp. Resolution
(bits)
Oper. Temp.
(°C)
Smallest Available Pckg.
(mm2)
Price
max w/pins See Notes
MAX6662  Local
Alert
Overt
3-Wire/SPI 1 No Programmable 13 -55 to +125 30.9 $1.37 @1k
See All Temperature Sensors (99)

Diagram
MAX6662: Typical Operating Circuit
Typical Operating Circuit

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    Document Ref.: 19-2121; Rev 0; 2001-07-01
    This page last modified: 2009-11-06


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