The TMP121 and TMP123 are SPI-compatible temperature sensors available in the tiny SOT23-6 package. Requiring no external components, the TMP121 and TMP123 are capable of measuring temperatures within 2°C of accuracy over a temperature range of −40°C to +125°C. Low supply current, and a supply range from 2.7V to 5.5V, make the TMP121 and TMP123 excellent candidates for low-power applications. The TMP121 and TMP123 are ideal for extended thermal measurement in a variety of communication, computer, consumer, environmental, industrial, and instrumentation applications.
The TMP121 and TMP123 are 12-bit plus sign read-only digital temperature sensors available in a tiny SOT23-6 package. They feature an SPI-compatible interface and require no external components for operation, making them ideal for low-power applications such as power-supply temperature monitoring and thermal protection in computers and mobile devices. The sensors operate over a wide supply voltage range of 2.7V to 5.5V.
| Resolution | 12-Bit + Sign, 0.0625 °C |
|---|---|
| Accuracy (−25°C to +85°C) | ±1.5°C |
| Supply Voltage Range | 2.7V to 5.5V |
| Quiescent Current | 50 µA (max) |
| Operating Temperature Range | −40 °C to +125 °C |
| Conversion Time (12-Bit) | 240 to 320 ms |
| Package Type | SOT23-6 |
The sensors provide a 12-bit plus sign resolution with a step size of 0.0625 °C.
No, these sensors require no external components for operation.
The maximum quiescent current is 50 µA when the serial bus is inactive.