LM90 Overview
Activation of the ALERT output occurs when any temperature goes outside a preprogrammed window set by the HIGH and LOW temperature limit registers or exceeds the T_CRIT temperature limit. Activation of the T_CRIT_A occurs when any temperature exceeds the T_CRIT programmed limit. The LM90 is pin and register patible with the LM86, Analog Devices ADM1032 and Maxim MAX6657/8. KEY SPECIFICATIONS • Supply Voltage 3.0 to 3.6 V • Supply Current 0.8 mA (Typ) • Local Temp Accuracy (Includes Quantization Error) – TA=25°C to 125°C, ±4.0 °C (Max) • Remote Diode Temp Accuracy (Includes Quantization Error) – TA=30°C to 50°C, TD=60°C to 100°C, ±3.0 °C (Max)
LM90 Key Features
- Accurately Senses Die Temperature of Remote ICs or Diode Junctions
- Offset Register Allows Sensing a Variety of Thermal Diodes Accurately
- On-board Local Temperature Sensing
- 10 Bit Plus Sign Remote Diode Temperature
- Diode Fault Detection Circuitry
- T_CRIT_A Output Useful for System Shutdown
- ALERT Output Supports SMBus 2.0 Protocol
- SMBus 2.0 patible Interface, Supports
- 8-pin VSSOP Package
