Capacitive Imaging Using Impedance Spectroscopy

 SigmaDrive® — Realtime HMI Utilizing Capacitive Imaging

SigmaSense AFE’s shift impedance sensing into the digital domain by uniquely converting minute changes in current to digital data. This direct-to-digital capability delivers unprecedented improvements in sensitivity and Signal to Noise Ratio (SNR). SigmaSense’s proprietary sigma-delta drive-sense circuits offer continuous operation, ultra-low drive voltages, and self-excitation / self-biasing that moves digital sensing much closer to the analog event horizon. 

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