Cypress' CapSense Sigma-Delta Algorithm | Cypress Semiconductor
Cypress' CapSense Sigma-Delta Algorithm
CapSense Sigma Delta algorithm (CSD) is Cypress' latest capacitive sensing algorithm for the CY8C21x34 and CY8C24x94 PSoC(R) device family.
CSD enables the implementation of an array of capacitive sensors through switched capacitor circuitry, an analog multiplexer, digital counting, and PWM functions.
The hardware configuration works in conjunction with high level software routines from the CSD User Module found in PSoC Designer(TM) to compensate for environmental and physical sensor variations