Wang L, Tong Y, Qin X, Zhang WZ, Rong X, Du J. A field-programmable-gate-array based high time resolution arbitrary timing generator with a time folding method utilizing multiple carry-chains.
THE REVIEW OF SCIENTIFIC INSTRUMENTS 2021;
92:014701. [PMID:
33514213 DOI:
10.1063/5.0024594]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Accepted: 12/11/2020] [Indexed: 06/12/2023]
Abstract
A carry-chain based high time resolution arbitrary timing generator, which is fully implemented using field-programmable-gate-array resources, is reported in this paper. The arbitrary timing generator channel operates with two alternative carry-chains to achieve non-dead-time timing sequence generation, and a 45.3 ps time resolution with a 383 ps minimum pulse width can be obtained. The time resolution is further improved to 11.3 ps by employing four parallel carry-chains in a single arbitrary timing generator channel to realize "time folding." The timing generator has a high time stability, and the time uncertainty is below 12 ps within a wide time range of 1 ns-108 ns. The arbitrary timing generator can be used to generate continuous spike timing sequences with a picosecond time resolution.
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