The ADT7408 is a high precision, 12-bit digital temperature sensor with ±2°C accuracy. It operates from -20°C to +125°C.
The ADT7408 is a 12‑bit digital temperature sensor designed for memory module temperature monitoring, industrial process control, and other applications. It features a band‑gap sensor, SMBus/I²C‑compatible interface, selectable hysteresis, and a dual‑purpose EVENT# pin that can act as a comparator or interrupt.
The device operates from –20 °C to +125 °C with a supply voltage of 3 V to 3.6 V, drawing a typical average current of 240 µA and a shutdown current of only 3 µA. Its 12‑bit ADC provides a temperature resolution of 0.0625 °C and a conversion time of about 60 ms.
| Accuracy | ±2 °C |
|---|---|
| Supply Voltage Range | 3 V to 3.6 V |
| Operating Temperature Range | –20 °C to +125 °C |
| ADC Resolution | 12 bits |
| Temperature Resolution | 0.0625 °C |
| Conversion Time | 60 ms |
| SCL Clock Frequency | 10 kHz to 100 kHz |
The ADT7408 operates from 3 V to 3.6 V.
It provides ±2 °C accuracy over the full temperature range.
EVENT# is an open‑drain output that can be programmed as a comparator or interrupt and goes low when a temperature limit is exceeded.