The ADM1032 is a dual−channel digital thermometer and under/overtemperature alarm intended for use in PCs and thermal management systems. The device can measure the temperature of a remote thermal diode, which can be located on the processor die or can be a discrete device (2N3904/06), accurate to 1°C. A novel measurement technique cancels out the absolute value of the transistor’s base emitter voltage so that no calibration is required. The ADM1032 also measures its ambient temperature.
   
Features
• On−Chip and Remote Temperature Sensing
• Offset Registers for System Calibration
• 0.125°C Resolution/1°C Accuracy on Remote Channel
• 1°C Resolution/3°C Accuracy on Local Channel
• Fast (Up to 64 Measurements Per Second)
• 2−Wire SMBus Serial Interface
• Supports SMBus Alert
• Programmable Under/Overtemperature Limits
• Programmable Fault Queue
• Overtemperature Fail−Safe THERM Output
• Programmable THERM Limits
• Programmable THERM Hysteresis
• 170 μA Operating Current
• 5.5 μA Standby Current
• 3.0 V to 5.5 V Supply
• Small 8−Lead SOIC and MSOP Packages
• These are Pb−Free Devices
   
Applications
• Desktop and Notebook Computers
• Smart Batteries
• Industrial Controllers
• Telecommunications Equipment
• Instrumentation
• Embedded Systems