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MAX6681 - Fail-Safe Remote/Local Temperature Sensors

This page provides the datasheet information for the MAX6681, a member of the MAX6680 Fail-Safe Remote/Local Temperature Sensors family.

Description

The MAX6680/MAX6681 are precise, two-channel digital thermometers.

Each accurately measures the temperature of its own die and one remote PN junction and reports the temperature on a 2-wire serial interface.

Features

  • o Two Alarm Outputs: ALERT and OVERT o Pin-Programmable Threshold for OVERT Limit o Programmable Under/Overtemperature ALERT Limit o Dual Channel: Measures Remote and Local Temperature o 11-Bit, 0.125°C Resolution for Remote Temperature Measurements o High Accuracy ±1°C (max) from +60°C to +100°C (Remote) o No Calibration Required o SMBus/I2C™-Compatible Interface o SMBus Timeout Prevents SMBus Lockup MAX6680/MAX6681 Ordering Information PART MAX6680MEE MAX6681MEE TEMP RANGE -55°C to +125°C -5.

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Full PDF Text Transcription

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www.DataSheet4U.com 19-2305; Rev 0; 4/02 ±1°C Fail-Safe Remote/Local Temperature Sensors with SMBus Interface General Description The MAX6680/MAX6681 are precise, two-channel digital thermometers. Each accurately measures the temperature of its own die and one remote PN junction and reports the temperature on a 2-wire serial interface. The remote junction can be a diode-connected transistor like the low-cost NPN type 2N3904 or PNP type 2N3906. The remote junction can also be a commoncollector PNP, such as a substrate PNP of a microprocessor. The MAX6680/MAX6681 include pin-programmable default temperature thresholds for the OVERT output, which provides fail-safe clock throttling or system shutdown.
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