Melexis adds light-to-voltage sensor to the SensorEyeCTM series. Melexis announces the launch of the MLX75305 Light-to-Voltage SensorEyeCTM. This is the second member of the SensorEyeCTM series of optical sensors specifically designed for high volume automotive, industrial and consumer applications. The MLX75305 Light-to-Voltage SensorEyeC is an easy-to-use light sensor that converts light intensity into an output voltage. The sensor is designed for high-volume applications like ambient light detection, LCD backlight dimming and LED light control. The light sensor’s output gives a voltage that varies linearly with incident light.

This MLX75305 is an integrated sensor IC, which means that the photodiode, transimpedance amplifier and linear voltage output stage are all included in the sensor chip. This guarantees stable light responsivity over time and over temperature, and also drastically improves noise behavior when compared to designs that use discrete photodiodes. It simplifies application design, requires fewer external components and improves quality. The SensorEyeC series are perfect replacements for discrete photodiodes, phototransistors and light dependant resistors (LDR). SensorEyeC devices are integrated light sensors with photodiode, transimpedance amplifier and output transistor in one chip to simplify application design, enhance quality and minimize use of external components.

All sensors are RoHS compliant and suited for solder reflow 260°C. AEC-Q100 qualified versions for automotive applications up to +125°C operating temperature are available. The MLX75305 is suited for measuring ambient light or for controlling LED light in LCD backlight dimming applications. Its unique features include small DFN open cavity package: 3mm x 3mm x 0.65mm; lead free solder reflow compatible for 260°C peak process temperatures; highly linear voltage output; light responsivity that is relatively independent of temperature; very high positional accuracy: the small, symmetrical DFN package provides pin-to-photodiode accuracy better than ±85µm; extended operating temperature range of -40°C to +125°C that meets AEC-Q100 automotive specifications. A consumer version up to +85°C is available also.

The MLX75305 Light-to-Voltage sensor is perfectly fit for a number of applications including LED monitoring and control of light intensity & colour; LCD backlight dimming of television sets, notebook computers, mobile phones (GSM), GPS receivers and portable multimedia players (MP3, DVD); hand presence detection, for instance for automatic activation of water taps and hand dryers; automotive applications include automatic light dimming of instrument panels and displays, headlights on/off control and hand presence detection for opening doors.

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