论文信息 - A multi-channel wide range time-to-digital converter with better than 9ps RMS precision for pulsed time-of-flight laser rangefinding

A multi-channel wide range time-to-digital converter with better than 9ps RMS precision for pulsed time-of-flight laser rangefinding

A multi-channel time-to-digital converter has been realized in 0.35μm CMOS. The 7-channel converter is based on a multiplying delay-locked loop acting as a first and a capacitor-scaled parallel delay line as a second interpolator, and is able to measure the time intervals and pulse widths or rise times of several successive timing signals. The circuit utilizes a 20MHz external crystal as a time base and offers better than 9ps measurement precision and a measurement range of up to ±74μs.

Juha Kostamovaara | Antti Mäntyniemi | Jussi-Pekka Jansson

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