Title:
TIME-TO-DIGITAL CONVERSION WITH LATCH-BASED RING
Document Type and Number:
WIPO Patent Application WO/2018/102068
Kind Code:
A3
Abstract:
An integrated circuit (IC) is disclosed for time-to-digital conversion with a latch-based ring. In example aspects, the IC includes a ring, a counter, an encoder, and time-to-digital converter (TDC) control circuitry. The ring includes multiple ring stages and propagates a ring signal between successive ring stages. Each respective ring stage includes latch circuitry to secure a state of the ring signal at the respective ring stage. The ring provides a ring output signal using the latch circuitry of each of the ring stages. The ring is coupled to the counter. The counter increments a counter value responsive to the ring signal and provides a counter output signal based on the counter value. The encoder is coupled to the ring and the counter. The encoder generates a TDC output signal based on the ring and counter output signals. The TDC control circuitry operates the ring responsive to a TDC input signal.
Inventors:
ZHUANG JINGCHENG (US)
Application Number:
PCT/US2017/059734
Publication Date:
July 12, 2018
Filing Date:
November 02, 2017
Export Citation:
Assignee:
QUALCOMM INC (US)
International Classes:
G04F10/00
Foreign References:
| US20070096836A1 | 2007-05-03 | |||
| US20150077279A1 | 2015-03-19 | |||
| US20090250616A1 | 2009-10-08 |
Attorney, Agent or Firm:
SAUNDERS, Keith (US)
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