What this air quality sensor delivers
The ZMOD4450AI4R is a digital air quality sensor from Renesas, communicating over an I²C bus — the output type is I²C, which means it talks directly to a host microcontroller without an external ADC. Accuracy is rated at ±2 %, giving the system-level measurement confidence for indoor air quality monitoring, HVAC control, or ventilation demand management. Supply voltage is 1.7 V, which aligns with low-power and battery-operated designs where the rail is already at 1.8 V or can be derived from a small LDO.
Package and integration fit
The sensor comes in a 3.00 x 3.00 x 0.70 mm LGA package with 0.50 mm pitch — a compact footprint that fits space-constrained PCBs in sensor modules or IoT edge nodes.
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