The TMP102 is a low-power digital temperature sensor with SMBus/Two-Wire serial interface available in a tiny SOT563 package. It does not require external components and can measure temperature with a resolution of 0.0625°C. The TMP102 features SMBus and two-wire interface compatibility, allowing up to four devices on one bus. It also has an SMB alert function. The TMP102 is ideal for extended temperature measurement in various fields such as communication, computer, consumer, environmental, industrial, and instrumentation. The device operates in a temperature range of -40°C to +125°C.
The TMP102 is a two‑wire, serial‑output temperature sensor offered in a tiny SOT563 package. It requires no external components and provides a resolution of 0.0625 °C per LSB. The device supports SMBus and Two‑Wire interface compatibility and can connect up to four devices on a single bus, making it suitable for portable, battery‑powered, and industrial applications.
The datasheet details electrical characteristics such as a supply range of 1.4 V to 3.6 V, active quiescent current of 10 µA, shutdown current of 0.5 µA, and a typical conversion time of 26 ms. It also describes the pin configuration, register map (temperature, configuration, limit registers), conversion rate settings, and fault‑queue options for reliable temperature monitoring.
| Supply Voltage (max) | 3.6 V |
|---|---|
| Operating Supply Range | 1.4 V to 3.6 V |
| Accuracy | 0.5 °C (-25 °C to +85 °C) |
| Resolution | 12 bits (0.0625 °C per LSB) |
| Active Quiescent Current | 10 µA (max) |
| Package | SOT563 (tiny) |
| Temperature Range | -40 °C to +125 °C |
The TMP102 operates from 1.4 V up to 3.6 V.
Up to four TMP102 devices can be connected on a single bus.
The sensor provides 12‑bit resolution, equal to 0.0625 °C per LSB.
In active mode the TMP102 draws about 10 µA.