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.
|Local Sensor Accuracy (Max) (+/- C)|
|Remote Sensor Accuracy (Max) (+/- C)|
|Remote Diode Temp Range for Listed Accuracy (C)|
|Remote Temp Resolution (Max) (bits)|
|Remote Sensor Correction|
|Temp Resolution (Max) (bits)|
|Operating Temperature Range (C)|
|Supply Voltage (Min) (V)|
|Supply Voltage (Max) (V)|
|Supply Current (Typ) (uA)|
|Estimated Package Size (WxL) (mm2)|
|Approx. Price (US$)|
|-40 to 150|
| Beta Compensation |
Series Resistance Cancellation
|-40 to 125|
| I2C |
|10VSSOP: 3 x 3: 15 mm2|
|0.55 | 1ku|
|Sample & Buy|