A 6GS/s 9.5 Bit Pipelined Folding-Interpolating ADC with 7.3 ENOB and 52.7dBc SFDR in the 2nd Nyquist Band in 0.25μm SiGe-BiCMOS: RFIC Interactive Forum

A 6GS/s 9.5 Bit Pipelined Folding-Interpolating ADC with 7.3 ENOB and 52.7dBc SFDR in the 2nd Nyquist Band in 0.25μm SiGe-BiCMOS

M. Buck1 , M. Grözing1 , R. Bieg1 , J. Digel1 , X.-Q. Du1 , P. Thomas1 , M. Berroth1 , M. Epp2 , J. Rauscher2 , M. Schlumpp2 ; 1 Universität Stuttgart, Germany, 2 Airbus DS Electronics and Border Security, Germany

A pipelined folding-interpolating ADC with a distributed quantizer is presented. The lowmismatch analog frontend provides for excellent SFDR and SNDR without calibration or digital post processing. The algorithm of the digital coder relaxes the requirements on the interface between analog core and digital coder. The single-core ADC achieves 7.3 ENOB and a SFDR of 52.7 dBc in the 2nd Nyquist band at 6 GS/s with an overall power consumption of 10.2 W