| 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 |
