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A 9 bit 11 GS/s DAC is presented that achieves an SFDR of more than 50 dB across Nyquist and IM3 below 50 dBc across Nyquist. The DAC uses a two-times interleaved architecture to suppress spurs that typically limit DAC performance. Despite requiring two current-steering DACs for the interleaved architecture, the relative low demands on performance of these sub-DACs imply that they can be implemented...
A 9-bit 11GS/s current-steering (CS) digital-to-analog converter (DAC) is designed in 28nm FDSOI. The DAC uses two-times interleaving to suppress the effects of the main error mechanisms of CS DACs while its clock timing can be tuned by the back gates bias voltage of the multiplexer transistors. The DAC achieves higher than 50dB SFDR and less than −50dBc IM3 over Nyquist at a sampling rate of 11GS/s,...
A two-times interleaved DAC using only a single supply voltage in a standard 65nm CMOS technology is presented. The interleaving architecture suppresses most of the non-idealities commonly found in high-speed DACs. Spurs generated by the interleaved architecture are suppressed by a novel calibration algorithm. The design achieves IM3 levels below −62dB across Nyquist with a clock frequency of 1.7GHz...
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