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MAX6642 - SMBus-Compatible Remote/Local Temperature Sensor

General Description

The MAX6642 precise, two-channel digital temperature sensor accurately measures the temperature of its own die and a remote PN junction and reports the temperature data over a 2-wire serial interface.

Key Features

  • o Dual Channel: Measures Remote and Local Temperature o +0.25°C Resolution o High Accuracy ±1°C (max) (Remote) and ±2°C (Local) from +60°C to +100°C o Measures Remote Temperature Up to +150°C o Programmable Overtemperature Alarm Temperature Thresholds o SMBus/I2C-Compatible Interface o Tiny TDFN Package with Exposed Pad MAX6642 Ordering Information PART MAX6642ATT90-T MAX6642ATT92-T MAX6642ATT94-T MAX6642ATT96-T MAX6642ATT98-T MAX6642ATT9A-T MAX6642ATT9C-T MAX6642ATT9E-T TEMP RANGE -40°C to +1.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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19-2920; Rev 3; 10/09 KIT ATION EVALU E L B AVAILA www.DataSheet4U.com ±1°C, SMBus-Compatible Remote/Local Temperature Sensor with Overtemperature Alarm General Description The MAX6642 precise, two-channel digital temperature sensor accurately measures the temperature of its own die and a remote PN junction and reports the temperature data over a 2-wire serial interface. The remote PN junction is typically a substrate PNP transistor on the die of a CPU, ASIC, GPU, or FPGA. The remote PN junction can also be a discrete diode-connected smallsignal transistor. The 2-wire serial interface accepts standard system management bus (SMBus™), Write Byte, Read Byte, Send Byte, and Receive Byte commands to read the temperature data and to program the alarm thresholds.