The light-to-digital converter transforms light intensity into a digital signal output through a two-wire I2C interface capable of data transfer rates of up to 400 kbits per second. The sensor combines a broadband visible plus infrared (IR) photodiode, an IR-responding photodiode, and a photopic IR-blocking filter on a single CMOS integrated circuit.
By filtering out unwanted IR light, the sensor can more accurately measure the ambient light. The TSL2584TSV’s near-photopic response produces a highly accurate lux measurement, even when mounted behind dark glass.
Advanced fabrication technology and the ability to accurately deposit interference filters directly onto the silicon results in a high-performance ambient light sensor.
The TSL2584TSV sensor features two integrating analogue-to-digital converters (ADCs) and a host of programmable features, including analog gain, integration time, upper and lower thresholds, and persistence filter.
The sensor’s TSV design enhances performance reliability with a moisture sensitivity level (MSL) 1 standard rating and improves humidity temperature-cycling performance while minimising corrosion resistivity.
The low-power TSL2584TSV sensor operates from supply voltage of 3V, with a typical active current of 175 µA that drops to just 3 µA in sleep mode. Applications include wearable devices, display backlights, keyboard illumination, and medical diagnostic products.