A High Performance Gated Vernier Time-to-Digital Converter
A time-to-digital, high-performance technology, applied in the direction of analog/digital conversion, code conversion, instruments, etc., can solve the problems of τ reduction, comparator error triggering, and lifting, etc., to improve the measurement range, improve the locking speed, and increase the measurement range Effect
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[0037] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.
[0038] The main performance index calculation of the gated vernier type time-to-digital converter among the present invention is as follows:
[0039] ① resolution. use τ 1 and τ 2 Represent the delay value of each delay unit in the fast ring oscillation and slow ring oscillation respectively, and the resolution of the coarse quantization mode is determined by τ 1 Determined, the resolution of the fine quantization mode is determined by the delay difference Δt of the two delay units delay Decide.
[0040] ②Measurement Range (Measurement Range) t MR . The main factor affecting the measurement range in the fine quantization mode is the oscillation period T of the fast ring oscillation GRO , delay unit τ 2 , Δt delay , reference clock period T REF , and the sum of delay values of PFD, DSSA and reset circuit t sum , its calculation for...
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