OPT3002DNPR Sensors, Transducers

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The OPT3002DNPR is a digital ambient optical sensor from Texas Instruments. The component detects light intensity ranging from 0.01 lux (10 micromoles/square meter) to 83,000 lux (8,300 klux). The OPT3002DNPR measures visible, near-infrared and ultraviolet light. It is composed of an IC chip and a photodiode integrated on a WLP package that includes an infrared filter.

The application fields in which the OPT3002DNPR is used include display brightness control, smart lighting control, presence detection, environmental control for healthcare, dimmable lighting, and light intensity detection for robotics and industrial automation. The WLP package, 4.5mm x 4.5mm and 0.4mm thickness, makes the component suitable for usage in portable, consumer and industrial applications.

The working principle of the OPT3002DNPR is based on the operation of a photodiode connected to an operational amplifier (opamp). The amplifier processes the photoelectric current generated by the photodiode so that it can be measured and read by the Digital to Analog Converter (DAC). The component is also equipped with a digital filter circuit that helps to compensate for power line interference and improve the quality of the signal.

The OPT3002DNPR measures the irradiance of visible, near-infrared and ultraviolet light at its photodiode output. The integrated infrared filter limits the range of the wavelength measured to the visible light range. The filter helps to reduce the amount of ambient infrared light that could interfere with the signal, resulting in higher accuracy of the measured value. The part of the photodiode under the filter is subject to a built-in photodiode sensitivity switch, which is configurable for the best performance.

The OPT3002DNPR is based on an architecture that requires minimal external circuitry to operate, making it suitable for battery-powered devices. The device features an adjustable active integration period, automatically accounting for sensor temperature variations with no external components. Additionally, the integrated ambient light digital filter helps to reduce the power line noise for improved accuracy.

The operating temperature range of the OPT3002DNPR is –40°C to +85°C. The operating voltage supply [VDD] ranges from +1.65V to +3.6V, and the operating current consumption is typically 10µA. The device is offered in a 4.5mm x 4.5mm x 0.4mm 6-ball WLP package, and is qualified by AEC-Q100 Grade-1. The device is also available in a die form, so designers can embed it into their own system.

The OPT3002DNPR is an ideal solution for portable and consumer applications that require tight integration. It is particularly suitable for applications that need to measure light in the visible, near-infrared and ultraviolet spectrum. The small form factor of the device allows it to be used in both smart devices and environment sensing applications. It is designed to provide reliable light measurements with minimum external components, making it ideal for battery-powered devices and systems.

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