The TMP401 is a remote temperature sensor monitor with a built-in local temperature sensor. The remote sensor is capable of monitoring the temperature of any external PN junction. Typical sense elements include low-cost NPN- or PNP-type transistors and diodes, or accessible thermal diodes integrated within microcontrollers, microprocessors, or field-programmable gate arrays (FPGAs).
●The accuracy of the remote sensor is ±1°C for multiple IC manufacturers, with no calibration needed. The two-wire serial interface accepts SMBus write byte, read byte, send byte, and receive byte commands to program alarm thresholds and to read temperature data.
●Features included in the TMP401 are series resistance cancellation, wide remote temperature measurement range (up to +150°C), diode fault detection, and temperature alert functions.
● ±1°C Remote Diode Sensor
● ±3°C Local Temperature Sensor
● Series Resistance Cancellation
● THERM Flag Output
● ALERT/THERM2 Flag Output
● Programmable Over- and Undertemperature Limits
● Programmable Resolution: 9- to 12-Bit
● Diode Fault Detection
● SMBus-Compatible
