公开(公告)号：US10601431B2

公开(公告)日：2020-03-24

申请号：US16022188

申请日：2018-06-28

Applicant: Silicon Laboratories Inc.

Inventor： Aaron J. Caffee ,  Jeffrey L. Sonntag ,  Brian G. Drost ,  Volodymyr Kratyuk

IPC: H03M1/06 ,  G04F10/00 ,  H03K5/24

Abstract: A time-to-voltage converter is configured to generate an output voltage signal and a correlated reference voltage signal. The time-to-voltage converter includes a current source configured to generate a bias current through a current source output node. The time-to-voltage converter includes a first switched-capacitor circuit coupled to the current source output node and configured to generate the output voltage signal based on an input time signal and the bias current during a first interval. The time-to-voltage converter includes a second switched-capacitor circuit coupled to the current source output node and configured to generate the correlated reference voltage signal based on a reference time signal and the bias current during a second interval. The first interval and the second interval are non-overlapping intervals.

公开(公告)号：US20200007136A1

公开(公告)日：2020-01-02

申请号：US16022188

申请日：2018-06-28

Applicant: Silicon Laboratories Inc.

Inventor： Aaron J. Caffee ,  Jeffrey L. Sonntag ,  Brian G. Drost ,  Volodymyr Kratyuk

IPC: H03M1/06 ,  G04F10/00

Abstract: A time-to-voltage converter is configured to generate an output voltage signal and a correlated reference voltage signal. The time-to-voltage converter includes a current source configured to generate a bias current through a current source output node. The time-to-voltage converter includes a first switched-capacitor circuit coupled to the current source output node and configured to generate the output voltage signal based on an input time signal and the bias current during a first interval. The time-to-voltage converter includes a second switched-capacitor circuit coupled to the current source output node and configured to generate the correlated reference voltage signal based on a reference time signal and the bias current during a second interval. The first interval and the second interval are non-overlapping intervals.

公开(公告)号：US09698807B1

公开(公告)日：2017-07-04

申请号：US15199257

申请日：2016-06-30

Applicant: Silicon Laboratories Inc.

Inventor： Aaron J. Caffee ,  Brian G. Drost ,  Volodymyr Kratyuk

IPC: H03M1/66 ,  H03M1/10 ,  H03M1/82

CPC classification number: H03M1/66 ,  H03L7/081 ,  H03L7/183 ,  H03M1/1033 ,  H03M1/1057 ,  H03M1/68 ,  H03M1/82

Abstract: A technique for on-chip time measurement includes dynamically scaling a range of a time-based digital-to-analog converter to enhance resolution of the time measurement. An apparatus includes a first time-based digital-to-analog converter configured to generate a first clock signal based on a first reference clock signal and a first digital code. The apparatus includes a second time-based digital-to-analog converter configured to generate a second clock signal based on a second reference clock signal and a second digital code. The first reference clock signal has a first frequency and the second reference clock signal has a second frequency that is harmonically related to the first frequency. The apparatus includes a time signal converter configured to generate an output signal having a level indicative of a time-of-arrival of a first edge of the first clock signal relative to a time-of-arrival of a second edge of the second clock signal.