Low-power time-to-digital converter
A time-to-digital converter technology, which is used in time-to-digital converters, electrical unknown time interval measurement, devices for measuring time intervals, etc. Effect
Active Publication Date: 2019-08-27
FUDAN UNIV
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The invention relates to a low-power time-to-digital converter. The low-power time-to-digital converter comprises a pre-amplifier and a successive approximation register type analog-digital converter;signals in a pseudo-differential form are input to the pre-amplifier; through a phase frequency detector of the pre-amplifier, a phase inverter, a passive amplifier composed of an N-type MOS capacitor, and a source follower, the input time-domain signals are converted into voltage signals, and the voltage signals are amplified; and finally, the voltage signals are input to the successive approximation register type analog-to-digital converter to be converted into digital signals. The passive amplifier composed of the N-type MOS capacitor is used, so that the precision of the time-to-digital converter can be improved. The phase inverter is turned off after the input signals are sampled, and the source follower is turned off in a restoration state; and two mechanisms can be used for avoiding unnecessary power consumption for the low-power time-to-digital converter so as to achieve the purpose of low power consumption.
Application Domain
Time-to-digital converters
Technology Topic
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Examples
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