The TMP122 and TMP124 are SPI‑compatible temperature sensors offering ±2 °C accuracy from –40 °C to +125 °C, low‑power operation, and programmable resolution.
The TMP122 and TMP124 digital temperature sensors are provided in SOT23‑6 and SO‑8 packages and communicate via an SPI‑compatible interface. They deliver temperature measurements with ±2 °C accuracy over a –40 °C to +125 °C range and can operate up to 150 °C, making them suitable for power‑supply monitoring, consumer electronics, and industrial applications.
The devices feature programmable resolution (9‑ to 12‑bit plus sign), a wide supply range of 2.7 V to 5.5 V, low quiescent current (50 µA) and an ultra‑low shutdown current (0.1 µA to 1 µA). Detailed register maps, timing diagrams, and application notes are included to aid integration and firmware development.
| Accuracy | ±2 °C over –40 °C to +125 °C |
|---|---|
| Supply Voltage Range | 2.7 V to 5.5 V |
| Resolution | 9‑ to 12‑bit + sign |
| Quiescent Current | 50 µA (serial bus inactive) |
| Shutdown Current | 0.1 µA to 1 µA |
| Package Types | SOT23‑6 and SO‑8 |
| Thermal Resistance (θJA) | 200 °C/W (SOT23‑6), 150 °C/W (SO‑8) |
The sensors operate from 2.7 V to 5.5 V.
The quiescent current is 50 µA when the serial bus is inactive.
Resolution is programmable via bits to select 9‑, 10‑, 11‑, or 12‑bit plus sign.
The devices can operate up to 150 °C (junction temperature max).