The ADT7302 is a 13-bit digital temperature sensor with a wide operating temperature range of -40°C to +125°C and an accuracy of ±2°C.
The ADT7302 is a complete temperature monitoring system offered in space‑saving SOT‑23 and MSOP packages. It integrates a band‑gap temperature sensor with a 13‑bit ADC, delivering ±2 °C accuracy and a resolution of 0.03125 °C. The device features a low‑power standby mode and a flexible serial interface compatible with SPI, QSPI, MICROWIRE, and DSP protocols.
The handbook details electrical specifications, pin‑out diagrams, timing diagrams, mounting recommendations, and ordering information. It also includes typical performance curves, absolute maximum ratings, and guidelines for supply decoupling and thermal mounting, helping designers integrate the sensor into medical, automotive, industrial, and consumer applications.
| Temperature Accuracy | ±2 °C |
|---|---|
| Temperature Resolution | 0.03125 °C |
| Supply Voltage | 2.7 V to 5.25 V |
| Supply Current (Normal Mode) | 1.6 mA to 2.2 mA |
| Shutdown Current | 0.2 µA to 1 µA |
| Power Dissipation (Normal Mode) | 631 µW (typ at 3.3 V) |
| Operating Temperature Range | −40 °C to +125 °C |
The sensor provides a temperature resolution of 0.03125 °C.
In shutdown mode the device draws between 0.2 µA and 1 µA, depending on supply voltage.
The SOT‑23 version of the ADT7302 uses a 6‑lead package.
A 0.1 µF ceramic capacitor should be placed between VDD and GND.