General Description
The MAX6654 is a precise digital thermometer that reports the temperature of both a remote P-N junction and its own die. The remote junction can be a diode-connected transistor—typically a low-cost, easily mounted 2N3904 NPN type or 2N3906 PNP type—that replaces conventional thermistors or thermocouples. Remote accuracy is ±1°C for multiple transistor manufacturers, with no calibration needed. The remote junction can also be a common-collector PNP, such as a substrate PNP of a microprocessor (µP).

FEATUREs
♦ High Accuracy ±1°C (max) from +70°C to +100°C
   (Remote)
♦ 11-Bit, 0.125°C Resolution
♦ Dual Channel: Measures Remote and Local
   Temperature
♦ No Calibration Required
♦ Programmable Under/Overtemperature Alarms
♦ I2C™-Compatible/SMBus Interface
♦ +3V to +5.5V Supply Range

APPLICATIONs
   Desktop Computers
   Notebook Computers
   Servers
   Thin Clients
   Workstations
   Test and Measurement
   Multichip Modules