The LM92CIM is a Digital Temperature Sensor and Thermal Window Comparator with an I²C serial bus interface and an accuracy of ±0.33°C. The window-comparator architecture of the LM92 eases the design of temperature control systems. 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. The INT output can operate in either a comparator or event mode, while the T_CRIT_A output operates in comparator mode only. The host can program both the upper and lower limits of the window as well as the critical temperature limit. Programmable Hysteresis as well as a fault queue are available to minimize false tripping. Two pins (A0, A1) are available for address selection. The sensor powers up with default thresholds of 2°C THYST, 10°C TLOW, 64°C THIGH and 80°C T_CRIT.
Window comparison simplifies design of ACPI-compatible temperature monitoring and control
Serial bus interface
Separate open-drain outputs for interrupt and critical temperature shutdown
Shutdown mode to minimize power consumption
Up to four LM92s can be connected to a single bus
12-bit + Sign output
Operation up to 150°C
Device has limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
