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1. (WO2017180778) TIME-BASED DELAY LINE ANALOG-TO-DIGITAL CONVERTER WITH VARIABLE RESOLUTION

Pub. No.:    WO/2017/180778    International Application No.:    PCT/US2017/027262
Publication Date: Fri Oct 20 01:59:59 CEST 2017 International Filing Date: Thu Apr 13 01:59:59 CEST 2017
IPC: H03M 1/10
H03M 1/50
H03M 1/18
H03M 1/00
Applicants: MICROCHIP TECHNOLOGY INCORPORATED
Inventors: KRIS, Bryan
DEUTSCHER, Neil
SPOHRER, Thomas
Title: TIME-BASED DELAY LINE ANALOG-TO-DIGITAL CONVERTER WITH VARIABLE RESOLUTION
Abstract:
Embodiments of the present disclosure include a differential digital delay line analog-to-digital converter (ADC), comprising differential digital delay lines including series coupled delay cells, wherein a delay time of a first delay line is controlled by a first input of the ADC and a delay time of a second delay line is controlled by a second input of the ADC. The ADC includes a pair of bypass multiplexers coupled at a predefined node location in the series coupled delay cells, latches each coupled with the series coupled delay cells, a converter circuit coupled with the plurality of latches configured to convert data from the latches into an output value of the ADC, and logic circuits configured to select data from the series coupled delay cells to the latches depending on a selected resolution of the differential digital delay line analog-to-digital converter.