- Patent Title: Use of a recirculating delay line with a time-to-digital converter
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Application No.: US15837472Application Date: 2017-12-11
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Publication No.: US10067478B1Publication Date: 2018-09-04
- Inventor: Raghunandan Kolar Ranganathan
- Applicant: Silicon Laboratories Inc.
- Applicant Address: US TX Austin
- Assignee: Silicon Laboratories Inc.
- Current Assignee: Silicon Laboratories Inc.
- Current Assignee Address: US TX Austin
- Agency: Zagorin Cave LLP
- Main IPC: G04F10/00
- IPC: G04F10/00 ; H03K3/033 ; H03K5/1534 ; H03K5/159
Abstract:
The resolution of a time to digital converter (TDC) is improved by using a gain stage at the input of the fine TDC. A delay line receives a pulse corresponding to the time information and recirculates the pulse in the delay line by coupling an output of the delay line to an input of the delay line. An integrating fine TDC receives a number of pulses from the delay line corresponding to the desired gain.
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