Part # LM76 datasheet

Part Manufacturer: National Semiconductor

National Semiconductor

Part Description: LM76 ±0.5°C, ±1°C, 12-Bit + Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire In

Part Details:

with LM76 January 2000 Two-W ±0.5°C, LM76 ire ±0.5°C, ±1°C, 12-Bit + Sign Digital Temperature Sensor ± Interface and Thermal Window Comparator with Two-Wire 1°C, Interface 12-Bit General Description Features The LM76 is a digital temperature sensor and thermal win- n Window comparison simplifies design of ACPI dow comparator with an I2CTM Serial Bus interface with an compatible temperature monitoring and control. accuracy of ±1°C. This accuracy for the LM76CHM is speci- n Serial Bus interface + fied for a -10°C to 45°C temperature range, while for the n Separate open-drain outputs for Interrupt and Critical Sign LM76CNM the temperature range is 70°C to 100°C. The Temperature shutdown LM76CHM is specified with an accuracy ±0.5°C at 25°C. The n Shutdown mode to minimize power consumption window-comparator architecture of the LM76 eases the de- n Up to 4 LM76s can be connected to a single bus sign of temperature control systems conforming to the ACPI Digital n 12-bit + sign output; full-scale reading of over 127°C (Advanced Configuration and Power Interface) specificationfor personal computers. The open-drain Interrupt (INT) out-put becomes active whenever temperature goes outside a Key Specifications programmable window, while a separate Critical Tempera- j Supply Voltage 3.3V or 5.0V ture Alarm (T_CRIT_A) output becomes active when the T temperature exceeds a programmable critical limit. The INT j Supply Current operating 250 µA (typ) emperature output can operate in either a comparator or event mode, 450 µA (max) while the T_CRIT_A output operates in comparator mode shutdown 8 µA (max) only. j Temperature +25°C

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LM76.pdf Datasheet