Vishay has created a complete proximity sensor inside a single surface-mount package – integrating laser (940nm VCSEL), photodiodes, amplifiers, ADC and DSP into 2 x 1.25 x 0.5mm. Called VCNL36825T, it can detect objects up to 200mm away through a hole as small as 1.6mm, and pulsed operation allows power to be reduced, to an average ...

This story continues at Tiny optical proximity detector works up to 200mm and down to 7μA

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