Comprehensive Error Analysis of Combined Channel Mismatch Effects in Time-Interleaved ADCs

A)str.el A rinte-interlroved analog-tdigital convener (ADC) achieves high sampling rates with fhe drawback of additional distortions caused by ehsnnelmismntches. I n thispoper we consider fhe dependency of the signalfo-noise-nnd-aiFrortion ratio (SINAD) on all of these mismatch effecrs together. By using eilher explieifly given mismatch parameters or given paramaer distributions we derive closed-form quntions for calculating the expliciI orthe upected SINAD f o r m nrbitmrynunberof channels. We clarify how channel mismatches interaer andperform worst case estimofions of the explicit SINADfor individunl mismafch errors. We also show that equations describing fhr expected SINAD of individual mismatch eriors ore special cases of our gcncralformulotion.