A 300MHz-BW 38mW 37dB/40dB SNDR/DR Frequency-Interleaving Continuous-Time Bandpass Delta-Sigma ADC in 28nm CMOS

Bandpass CT DSMs offer essential advantages for RF and mm-wave systems, including digital I/Q mixing, innate anti-alias filtering, and an easy-to-drive input. However, existing CT DSMs lack the bandwidth for emerging applications, including 5G and radar. A practical frequency-interleaving architecture efficiently scales CT bandpass DSM bandwidth to break the CT DSM bandwidth bottleneck. A 28nm CMOS prototype frequency-interleaves two DSMs for 300MHz BW, 37dB SNDR at 1.5GHz while consuming 38mW.