Abstract:In this paper we report some observations on the resolution and tones of First Order Noise Shaping LocalOscillator Based Time-to-Digital Converters (LO TDCs). We describe the architecture and governing equations of the LO TDC. We introduce equations to predict the resolution of the system "LO TDC plus moving average filter" and the frequency and amplitude of the largest amplitude tone in the spectrum of the TDC output when the input is constant. We describe briefly the block diagrams of a Matlab model of the L… Show more
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