# A 0.8–2 GHz Fully-Integrated QPLL-Timed Direct-RF-Sampling Bandpass $\Sigma \Delta$ ADC in 0.13 $\mu$m CMOS

A reconfigurable bandpass continuous-time ΣΔ RF ADC tunable over the 0.8-2 GHz frequency range is presented. System- and circuit-level innovations provide low power consumption and reduced circuit complexity. The proposed architecture operates in both the first- and second-Nyquist zones to enable a wide tuning range from a fixed sampling frequency of 3.2… CONTINUE READING