An Analysis of Time Interleaved-ADC through Literature Review

In this research survey work we have presented the performance analysis of TI-ADC in order to enhance the performance it is very important to prepare a survey so we have done through a literature survey. In many mix-signal systems, analog-to-digital converters (ADCs) play an important role for digitizing analog signal. To design high-speed and high-resolution ADCs, multichannel ADC structure is adopted in numerous applications. And time-interleaved ADCs (TI-ADCs) are the most frequently used multi-channel ADC structure, as the sampling rate of TI-ADCs can be boosted multiple times. Time-interleaving can also achieve better power consumption for GHz ADCs compared to traditional ADC architectures. On the other hand, due to the process, voltage and temperature variations, the ADC channels are not identical and the performance of the TIADC is limited by the offset, gain and timing mismatches among the ADC channel. The analog-to-digital converters (ADCs) and calibration scheme for timing skew in time-interleaved analog-to-digital converters. It detects the relevant timing error by subtracting the output difference with the sum of the first derivative of the digital output. The least-mean-square (LMS) loop is exploited to compensate the timing skew. Since the calibration scheme depends on the digital output, all timing skew sources can be calibrated and the main ADC is maintained.