The document introduces an automotive-grade temperature sensor with high accuracy, 16-bit resolution, and a wide operating range.
The ADT7312 digital temperature sensor offers automotive‑grade accuracy of ±1 °C over a wide range from –55 °C to +175 °C. It integrates a band‑gap reference, a temperature sensor, and a 16‑bit ADC, providing a resolution of 0.0078 °C when configured for 16‑bit mode.
Available only in die form, the device operates from 2.7 V to 5.5 V and features low power consumption, programmable interrupts, and open‑drain CT and INT outputs for over‑/under‑temperature detection.
| Temperature range | –55 °C to +175 °C |
|---|---|
| Supply voltage range | 2.7 V to 5.5 V |
| Temperature accuracy | ±1 °C (–55 °C to +175 °C) |
| Resolution (16‑bit mode) | 0.0078 °C |
| First conversion time (power‑up) | 6 ms |
| Power consumption (normal mode) | 880 µW typical at 3.6 V |
| Power consumption (shutdown mode) | 9 µW typical at 3.6 V |
| Supply current (continuous conversion) | 245 µA typical at 3.6 V |
| Shutdown current | 2.5 µA typical at 3.6 V |
The sensor provides ±1 °C accuracy from –55 °C to +175 °C.
Typical power consumption is 880 µW at a 3.6 V supply.
Yes, the default 13‑bit resolution can be changed to 16‑bit via the serial interface.
The device operates from 2.7 V up to 5.5 V.