Ypres, Belgium Melexis has launched the first light sensor in its new SensorEyeC series of optical sensors designed for high-volume automotive, industrial and consumer applications. The MLX75303 optical switch incorporates a photodiode, transimpedance amplifier and Schmitt Trigger voltage output stage.
The integrated sensor chip guarantees stable light responsivity over time and over temperature, and is also said to significantly improve noise behavior when compared to designs that use discrete photodiodes. It also simplifies application design, requires less external components and improves quality, Melexis said.
The MLX75303 light sensor is specially designed to continue functioning at high speed (10 us typical/20 us max. response time) while being oversaturated by a strong light source up to 1000x the sensor's switch-on threshold level. This is accomplished by using increased light levels, so that sufficient light penetrates even after dirt builds-up on the sensor, Melexis said. The MLX75303 can be used in applications with near infrared light or with ambient light where, for instance, day/night detection is required.
The MLX75303 is housed in a DFN open cavity package that measures 3 x 3 x 0.65 mm. It's also available in a SO8 package. The DFN package provides pin-to-photodiode accuracy better than ± 85 microns, and the photodiode area is relatively large (600 x 600 microns) and thus tolerant to mechanical misalignment, Melexis said.
The sensor chip operates over the 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.
The company plans to add light-to-voltage and light-to-frequency SensorEyeC devices in the coming months.
Pricing: The MLX75303 SensorEyeC is priced below $0.50 in OEM quantities.
Availability: Delivery is 16 weeks ARO.
Product information: MLX75303