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Clock-skew errors in time-interleaved (TI) analog-to-digital converters (ADCs) importantly degrade the linearity of such converters. These nearly constant but unknown errors, which must not be confused with random jitter, prevent TI ADCs from performing uniform sampling. This paper proposes a mixed-signal clock-skew calibration technique and explores its limitations to perform a background calibration...
This paper presents an analysis of various noises in high-pass ΔΣ modulator. The effect of jitter and switch noise is the same in HP modulator than in conventional modulator. These noises can be considered as white noise and increase the in band noise floor degrading the performance of the high-pass ΔΣ modulator. However, unlike the effect of op-amp noise in the conventional modulator, the op-amp...
The clock-skew error in time-interleaved analog-to-digital converters importantly degrades their linearity. This paper presents a digital circuit to detect these errors. It has a simpler hardware implementation than the previously presented methods and it is the first directly generalizable to any number of channels. Moreover, it is insensible to gain-mismatch and random jitter. To illustrate it,...
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