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LM77 - 9-Bit Sign Digital Temperature Sensor and Thermal Window Comparator

Description

The LM77 is a digital temperature sensor and thermal window comparator with an I2C™ Serial Bus interface.

Features

  • n Window comparison simplifies design of ACPI compatible temperature monitoring and control. n Serial Bus interface n Separate open-drain outputs for Interrupt and Critical Temperature shutdown n Shutdown mode to minimize power consumption n Up to 4 LM77s can be connected to a single bus n 9-bit + sign output; full-scale reading of over 128˚C Key Specifications n Supply Voltage n Supply Current operating shutdown n Temperature Accuracy.
  • 10˚C to 65˚C.
  • 25˚C to 100˚C.
  • 55˚C.

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Full PDF Text Transcription

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LM77 9-Bit + Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interface June 1999 LM77 9-Bit + Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interface General Description The LM77 is a digital temperature sensor and thermal window comparator with an I2C™ Serial Bus interface. The window-comparator architecture of the LM77 eases the design of temperature control systems conforming to the ACPI (Advanced Configuration and Power Interface) specification for personal computers. The open-drain Interrupt (INT) output becomes active whenever temperature goes outside a programmable window, while a separate Critical Temperature Alarm (T_CRIT_A) output becomes active when the temperature exceeds a programmable critical limit.
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