Digital local temperature sensor with SPI output and ±0.5°C accuracy
The ADT7320UCPZ-R2 is a 15-bit digital local temperature sensor with SPI output and ±0.5°C typical accuracy from -10°C to 105°C, widening to ±0.66°C across the full -40°C to 150°C operating range. It runs on a 2.7 V to 5.5 V supply.
SPI interface and feature set
SPI output provides deterministic read timing and supports daisy-chaining multiple sensors on a single bus — a practical advantage over I²C in noise-sensitive or multi-sensor layouts where bus capacitance and addressing become constraints. The One-Shot and Shutdown Mode features allow the part to duty-cycle its own power: wake, measure, transmit, sleep. This cuts average current in battery-powered or thermally constrained designs. The Output Switch gives a hard-threshold interrupt pin that asserts without polling the SPI bus, useful for overtemperature shutdown in a motor drive or power supply.
Package and mounting
The package with exposed pad requires a thermal land on the PCB for best accuracy — the pad must be soldered to a copper plane that extends to the measured surface or ambient reference. Surface-mount reflow profile follows standard lead-free (ROHS3 Compliant) assembly.