An 80MS/s 70.79dB-SNDR 60.7fJ/Conv-Step Radiation-Tolerant Semi-Time-interleaved Pipelined-SAR ADC

In modern medical, aerospace, and high-energy physics applications, radiation tolerance in ADCs is crucial to guarantee the signal chain's robustness. However, it usually brings penalties to the power efficiency. Double modular redundancy and averaging are used in [1] to detect and ignore the error samples caused by radiation effects. [2] applies a higher power supply to minimize the radiation-induced degradation. However, the previous works did not consider the ADC efficiency degradation caused by radiation tolerance. This paper presents a pipelined-SAR ADC, which is designed by revealing and balancing the tradeoffs between power efficiency and radiation tolerance, achieving 80MS/s and 70.79-dB SNDR with high conversion efficiency and radiation tolerance.