A 30GS/s 6bit SiGe ADC with input bandwidth over 18GHz and full data rate interface

Abstract

In this paper, a time-interleaved 30GS/s 6bit ADC fabricated in 0.18μm SiGe BiCMOS technology has been demonstrated. A bandwidth boosting technique and packaging solution has been proposed which enables the ADC to achieve input bandwidth over 18GHz. A full data rate interface is integrated to transmit all the data in real time. The ADC has a SFDR >35dBc over the entire Nyquist frequency. An effective number of bits (ENOB) above 5.0 are achieved for low frequency input tones, dropping to 3.5 at 16GHz.