A 2.4GHz 40mW 40dB SNDR/62dB SFDR 60MHz bandwidth mirrored-image RF bandpass S? ADC in 90nm CMOS ■
Julien Ryckaert, Julien Ryckaert, Julien Ryckaert, Jonathan Borremans, Jonathan Borremans, Jonathan Borremans, Bob Verbruggen, Bob Verbruggen, Bob Verbruggen, Joris Van Driessche, Joris Van Driessche, Joris Van Driessche, Liesbeth Van Der Perre, Liesbeth Van Der Perre, Liesbeth Van Der Perre, J. Craninckx, J. Craninckx, J. Craninckx, G. Van Der Plas, G. Van Der Plas, G. Van Der Plas
A 6th order RF bandpass SigmaDelta ADC operating on the 2.4 GHz ISM band is presented. The bandpass loop filter is based on digitally programmable Gm-LC resonators. By using a mirrored-image sampling technique, the clock frequency is reduced to 3 GS/s, thereby reducing the power consumption. Implemented in a standard 90 nm CMOS process, the IC achieves 40 dB and 62 dB of SNDR and SFDR respectively on a 60 MHz bandwidth with 40 mW of power consumption.