Update: 30 September, 2023
The MAX6680/MAX6681 are precise, two-channel digital thermometers that accurately measure the temperature of their own die and one remote PN junction and report 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 common-collector 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 shut- down. In addition, the devices are pin programmable to select whether the OVERT output responds to either the local, remote, or both temperatures. The 2-wire serial interface accepts standard System Management Bus (SMBus)™ commands such as Write Byte, Read Byte, Send Byte, and Receive Byte to read the temperature data and program the alarm thresholds and conversion rate. The MAX6680/MAX6681 can func- tion autonomously with a programmable conversion rate, which allows the control of supply current and temperature update rate to match system needs. For conversion rates of 4Hz or less, the remote sensor tem- perature can be represented in extended mode as 10 bits + sign with a resolution of 0.125°C. When the con- version rate is 8Hz, output data is 7 bits + sign with a resolution of 1°C. The MAX6680/MAX6681 also include an SMBus timeout feature to enhance system reliability. The MAX6681 i
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MD5 Checksum: 87EDEDE775CEDABCA982738BC5836837
Publication date: 11 April, 2012
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PDF Link: MAXIM MAX6680/MAX6681 handbook PDF