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LM82 - Remote Diode and Local Digital Temperature Sensor

General Description

The LM82 is a digital temperature sensor with a 2 wire serial interface that senses the voltage and thus the temperature of a remote diode using a Delta-Sigma analog-to-digital converter with a digital over-temperature detector.

Key Features

  • n Accurately senses die temperature of remote ICs, or diode junctions Simplified Block Diagram DS101297-1 SMBus™ is a trademark of the Intel Corporation. Pentium II ® is a registered trademark of the Intel Corporation. I2C ® is a registered trademark of the Philips Corporation. © 2000 National Semiconductor Corporation DS101297 www. national. com LM82 Connection Diagram QSOP-16 Ordering Information Order Number LM82CIMQA NS Package Number MQA16A (QSOP-16) MQA16A (QSOP-16) Transport Media.

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LM82 Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface January 2000 LM82 Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface General Description The LM82 is a digital temperature sensor with a 2 wire serial interface that senses the voltage and thus the temperature of a remote diode using a Delta-Sigma analog-to-digital converter with a digital over-temperature detector. The LM82 accurately senses its own temperature as well as the temperature of external devices, such as Pentium II ® Processors or diode connected 2N3904s. The temperature of any ASIC can be detected using the LM82 as long as a dedicated diode (semiconductor junction) is available on the die. Using the SMBus interface a host can access the LM82’s registers at any time.