Abstract:
This brief presents a fully dynamic incremental \Delta \Sigma ADC for multi-channel simultaneous sampling systems. By using the code division multiplexing technique,...Show MoreMetadata
Abstract:
This brief presents a fully dynamic incremental \Delta \Sigma ADC for multi-channel simultaneous sampling systems. By using the code division multiplexing technique, a single incremental \Delta \Sigma ADC core can sample the 4-channel signals meanwhile preserving the temporal information. Furthermore, to support various bandwidths with scalable power consumption, a fully dynamic cascoded floating-inverter-amplifier based integrator is used. The proposed 4-channel ADC is fabricated in a standard 180nm CMOS process and only occupies an area of 0.028mm2 per channel. The ADC achieves an SNDR of 80dB within a scalable bandwidth from 1.52kHz to 8.78kHz with power scaling from 56~\mu \text{W} to 295~\mu \text{W} for each channel. This results in a 154.7dB Schreier FoM within the scaling range.
Published in: IEEE Transactions on Circuits and Systems II: Express Briefs ( Volume: 70, Issue: 10, October 2023)