High-performance gating vernier type time digital converter
A time-to-digital converter technology, applied in the field of high-performance gated vernier time-to-digital converters, can solve problems such as τ reduction, comparator false triggering, and boosting, etc., and achieves improved measurement range, improved locking speed, and large measurement range. Effect
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[0037] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.
[0038] The main performance indicators of the gated vernier time-to-digital converter in the present invention are calculated as follows:
[0039] ① Resolution. use τ 1 and τ 2 respectively represent the delay value of each stage of delay unit in fast ring oscillation and slow ring oscillation, and the resolution of coarse quantization mode is given 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 t MR . The main factor affecting the measurement range in the fine-scale mode is the oscillation period T of the fast ring vibration GRO , the delay unit τ 2 , Δt delay , the reference clock cycle T REF , and the sum of the delay values of PFD, DSSA and reset circuit t sum , its calculation formula is
[0041] ...
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