Towards Digitally enhanced ADC's

Analog-to-Digital converters operating at gigasamples per second are often required in nowadays communication systems. One effective way to achieve high sampling rates at low power consumption is time-interleaving. However, time-interleaved converters suffer from well known problems like offset, gain and sample time mismatch which degrade the performance of the ADC system as a whole. The designer can make use of available digital functionality to cope with these problems. This article discusses ways to improve the performance of time-interleaved analog-to-digital converters by making use of the possibilities (and tradeoffs) of added digital resources