Digital filtering solution for PsoC devices

16 May 2012 Design Automation

Cypress Semiconductor announced a digital filtering solution based on its PSoC 3 and PSoC 5 programmable system-on-chip families. The new solution, available free through a software ‘component pack’ upgrade, enables designers to quickly and easily design and customise digital filters.

The hardware digital filter co-processor integrated in the PSoC 3 and PSoC 5 devices combined with the easy-to-use PSoC Creator software enable advanced FIR or IIR digital filter implementations, AC noise rejection and many other filtering applications.

Digital filters have many applications, often involving the removal of a signal that interferes with system performance, or the isolation of a necessary signal. PSoC 3 and PSoC 5’s hardware filter implementation claims to allow higher performance than is possible from any MCU-only solution. It can clean up and isolate even very weak signals, enabling small sensors to operate efficiently, and extracting modulated data in voice and communications systems.

The new filtering solution is available as a drop-in component from Cypress’ PSoC Creator 2.0 design software. It was recently released in an update that includes new peripheral functions.

The digital filter component is fully tested and characterised, and offers two independent filter channels, each of which can have up to four separately designed FIR or IIR stages in series. Customers can choose built-in standard window filter types or enter custom filter coefficients for maximum flexibility. Final hardware-optimised coefficient values as well as the graphical views of the expected results can be extracted for further analysis.

The digital filter component is available in a free download of Cypress’s Component Pack 1 for existing PSoC Creator 2.0 users. Users downloading PSoC Creator 2.0 for the first time will automatically receive the component pack. Going forward, registered users will receive alerts when new component packs are released.

For more information visit www.cypress.com/go/potm

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