The TMP431 and TMP432 are remote temperature sensor monitors with a built-in local temperature sensor. The remote temperature sensor diode-connected transistors are typically low-cost, NPN- or PNP-type transistors or diodes that are an integral part of microcontrollers, microprocessors, or FPGAs.
Remote accuracy 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 the alarm thresholds and to read temperature data.
The TMP431/32 include beta compensation (correction), series resistance cancellation, programmable non-ideality factor, programmable resolution, programmable threshold limits, minimum and maximum temperature monitors, wide remote temperature measurement range (up to +150°C), and diode fault detection and temperature alert function.
The TMP431 is available in a VSSOP-8 package and the TMP432 is available in a VSSOP-10 package.
|Approx. Price (US$)|
|Operating Temperature Range (C)|
|Remote Sensor Correction|
|Remote Diode Temp Range for Listed Accuracy (C)|
| I2C |
|0.45 | 1ku|
|-40 to 125|
| Beta Compensation |
Series Resistance Cancellation
|-40 to 150|
|Sample & Buy|