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A Fully Dynamic 4-Channel 13b Simultaneous Sampling Incremental ΔΣ ADC Using Cascoded Floating-Inverter-Amplifier and Code Division Multiplexing Technique | IEEE Journals & Magazine | IEEE Xplore

A Fully Dynamic 4-Channel 13b Simultaneous Sampling Incremental ΔΣ ADC Using Cascoded Floating-Inverter-Amplifier and Code Division Multiplexing Technique


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 More

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.
Page(s): 3737 - 3741
Date of Publication: 11 July 2023

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