The MAX31826 is a 1-Wire digital temperature sensor with 128 bytes of EEPROM storage. The EEPROM can be locked to prevent further data writes. The device has a 64-bit serial code, allowing it to be used on the same 1-Wire bus as other devices.
The MAX31826 is a 1‑Wire digital temperature sensor that provides 12‑bit measurements (0.0625 °C LSB) over a –55 °C to +125 °C range with ±0.5 °C accuracy from –10 °C to +85 °C. It includes a 1 Kb lockable EEPROM for storing system data and four address pins for mapping multiple devices on a single bus.
The device can be powered directly from the 1‑Wire data line (parasite power) or from an external supply on the Vpp pin. Electrical specifications, timing diagrams, pin configurations, and ordering information are provided, along with package outlines and revision history.
| Operating Temperature Range | -55 °C to +125 °C |
|---|---|
| Accuracy | ±0.5 °C (‑10 °C to +85 °C) |
| Resolution | 12‑bit (0.0625 °C) |
| EEPROM Size | 1 Kb (128 bytes) lockable |
| Temperature Conversion Time | 150 ms (12‑bit) |
| Package | 8‑Pin pMAX® (UMAX) package |
The sensor provides 12‑bit resolution, which corresponds to 0.0625 °C per LSB.
It can be powered from the 1‑Wire data line (parasite power) or from an external supply applied to the Vpp pin.
The device contains a lockable 1 Kb EEPROM (128 bytes) for storing system data.