Last week Belgian fabless chip company Melexis announced a unique inductive sensing IC that includes a tiny transformer, drive circuit and sense circuit, so Electronics Weekly decided to have a closer look. No permanent magnet, external or internal, is needed, and external magnetic fields are rejected. MLX92442 only requires a nearby electrically conductive object for triggering. It comes in either ...
Alps Alpine has launched a touchless capacitive overlay to add proximity control to 15.6inch displays. Detection range is 50 – 80mm for hand or finger proximity, 30 – 50mm to select an action and 0-30mm to activate an action. “Capacitive touch panels offer intuitive input and control. The flipside is that normal capacitive touch panel input is obstructed by wet ...
To shrink size and power consumption for wearables, Rohm has turned to lasers for a short-range proximity detector. Built around a vcsel (vertical cavity surface-emitting laser), RPR-0720 measures only 2 x 1 x 0.55mm including its photodiodes and control IC. The internal IC operates over 1.7 to 3.6V, drawing 16μA (typ for 50μs mode, 35μA max) when it is not ...
Vishay has release of two high-resolution automotive grade optical reflective proximity sensors that operate down to 20µm for force sensing applications. In use, an infra-red beam is sent out and its reflection detected. Sensing can be from up-close to half a meter away, and can have enough resolution to detect the displacement of a surface for force, push or glove-independent ...
Vishay has announced VCNL4040, a combined optical proximity detector and ambient light sensor, that includes infra-red LED, two photodetectors, signal processing and a 16bit ADC in a 4 x 2 x 1.1mm package. “The three-in-one sensor features an interrupt function and supports an I²C bus communications interface, which simplifies window and sensor placement, According to TTI, which is stocking the ...
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