Tiny optical proximity detector works up to 200mm and down to 7μA

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 ...

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