Designing Transformer Coupled Front-End Systems for High-Performance ADCs

摘要

Designing a system that uses highspeed analog-to-digital converters (ADCs) with high input frequencies (IFs) has always been a challenging task. Using a transformer makes this even more difficult, because transformers have inherent nonlinearities that can result in sub-optimal performance. This article gives a breakdown on what to look for when designing a transformer coupled ADC front end for high-speed sub-ranging ADCs.