Suitable for display-dimming feedback in portable devices, notebooks, and automotive applications, the MLX75304 Light-to-Frequency SensorEyeC from Melexis has a dynamic range in excess of 100dB. Incorporating photodiode, transimpedance amplifier, and output stage onto one chip, the sensor provides a frequency output to increase precision under all lighting conditions while simultaneously simplifying the sensor interface. Available in 3 configurations, the SensorEyeC's readout of ambient light level is a digital input to either a small microcontroller or counter. From $0.50 in OEM quantities.
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