Piezo Keypads

There are a number of different options when specifying Piezo elements within your design, but essentially these fall into two basic categories - individual piezo elements per "key" of the overlay, or a full piezo panel mounted behind the whole contact area that detects the smallest pressure (down to micrometers) in any given location to identify the key press. Further overviews can be downloaded below, or go to Algra's website for a full set of options and links to case studies for each type of Piezo technology.

Algra Dynasim		Layers of piezo, electrical conductors and insulation pressed into polyester film, common overlays include aluminium, glass, plastic or stainless steel.
Algra Dynapic		Individual piezo elements behind each key, allowing for endless design ideas, resistant to vandalism and extremely long life
Algra DYSI-97 PS Driver IC		Overview of bespoke driver IC suitable for interfacing to piezo keypad elements
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