An incremental sigma delta converter for compressive sensing applications

An analog-to-digital converter suitable for compressive sensing applications is presented. The converter is based on an incremental sigma-delta converter architecture and is able to directly acquire and convert to digital format compressive sensing measurements. A switched-capacitor circuit is proposed for the converter´s hardware implementation. Simulations at the system and transistor levels validate the approach. The converter occupies a small area of 0.047 mm² on a target 0.5 μm CMOS process. Thus, several of them can be implemented in parallel to achieve high conversion rates.