Charles Wu
TSMC 65nm, December 2012
A wide-tuning-range low-power sigma-delta-based direct-RF-to-digital receiver architecture is implemented in 65 nm CMOS. For a 4 MHz signal, the peak SNDR of the receiver exceeds 68 dB and is better than 60 dB across the 400 MHz to 4 GHz carrier frequency range. By virtue of utilizing a negative feedback digitizer close to the antenna, an IIP3 of 10 dBm is achieved while dissipating only 40 mW from 1.1 V/1.5 V supply voltages.
ESSCIRC 2013, JSSC 2014