Analog Devices ADM1032
The ADM1032 is a dual-channel digital thermometer and under/over temperature alarm, intended for use in personal computers and thermal management systems. The higher 1°C accuracy offered allows systems designers to safely reduce temperature guardbanding and increase system performance. The device can measure the temperature of a microprocessor using a diode-connected NPN or PNP transistor, which may be provided on-chip or can be a low-cost discrete device such as the 2N3906.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 Over/Under Temperature Limits Programmable Fault Queue Over-Temperature Fail-Safe THERM Output Programmable THERM Limits Programmable THERM Hysteresis 170●A Operating Current 5.5
●A Standby Current 3 V to 5.5 V Supply Small 8-Lead SO and Micro_SO Package
APPLICATIONS
Desktop Computers Notebook Computers Smart Batteries Industrial Controllers Telecomms Equipment Instrumentation Embedded Systems ؎1؇C Remote and Local System Temperature Monitor ADM1032* PRODUCTDESCRIPTION
A novel measurement technique cancels out the absolute value of the transistor’s base emitter voltage, so that no calibration is required. The second measurement channel measures the output of an on-chip temperature sensor, to monitor the temperature of the device and its environment.