A 20 GS/s 8 b ADC with a 1 MB memory in 0.18 /spl mu/m CMOS

A 20 GS/s 8-bit ADC achieves a bandwidth of 6 GHz in 0.18 /spl mu/m CMOS. The implementation uses 80 time-interleaved current-mode pipeline sub-ADCs and stores data at 20 GB/s into a 1 MB on-chip memory. The ADC is packaged with a BiCMOS input buffer chip in a 438-ball BGA, and total power consumption is 10 W.