PMID- 33648091
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20210302
IS  - 1089-7623 (Electronic)
IS  - 0034-6748 (Linking)
VI  - 92
IP  - 2
DP  - 2021 Feb 1
TI  - A simple Field Programmable Gate Array (FPGA) based high precision low-jitter 
      delay generator.
PG  - 024701
LID - 10.1063/5.0030341 [doi]
AB  - Pulse delay generators are ubiquitous in laboratories to coordinate and control 
      the timing between different devices in applications that include lasers, mass 
      spectrometers, and other scientific instruments. The most important required 
      characteristics are precision, to control time exactly, and low-jitter, to 
      minimize uncertainty in experiments. Here, we introduce a new design of a high 
      precision and low-jitter digital delay generator based on a Field Programmable 
      Gate Array (FPGA). The final delay is composed of steps of 4.2 ns (coarse delay) 
      with fine steps of 16 ps (fine delay). The coarse delay is generated by a 240 MHz 
      pulse sequence from the FPGA with a 50 MHz clock. An embedded time-to-digital 
      conversion unit is used to measure the interval between the external trigger and 
      the clock signal, which, together with an integrated delay generator, is used to 
      realize the fine delay. Jitter compensation is achieved through a 
      measurement-and-feedback module. A computer interface is designed to control the 
      system through a Nios II processor. Measurements confirm a time resolution of 16 
      +/- 2 ps with jitter below 450 +/- 20 ps (at 24  degrees C) with a maximum delay of 1 s. The 
      whole system is simple in structure and low in cost.
FAU - Chen, Zeyang
AU  - Chen Z
AD  - Tianjin International Center for Nanoparticles and Nanosystems, Tianjin 
      University, 92 Weijin Road, Nankai District, Tianjin 300072, China.
FAU - Wang, Xiaohan
AU  - Wang X
AD  - Tianjin International Center for Nanoparticles and Nanosystems, Tianjin 
      University, 92 Weijin Road, Nankai District, Tianjin 300072, China.
FAU - Zhou, Ziwen
AU  - Zhou Z
AD  - Tianjin International Center for Nanoparticles and Nanosystems, Tianjin 
      University, 92 Weijin Road, Nankai District, Tianjin 300072, China.
FAU - Moro, Ramiro
AU  - Moro R
AUID- ORCID: 0000000295913747
AD  - Tianjin International Center for Nanoparticles and Nanosystems, Tianjin 
      University, 92 Weijin Road, Nankai District, Tianjin 300072, China.
FAU - Ma, Lei
AU  - Ma L
AUID- ORCID: 0000000224464833
AD  - Tianjin International Center for Nanoparticles and Nanosystems, Tianjin 
      University, 92 Weijin Road, Nankai District, Tianjin 300072, China.
LA  - eng
PT  - Journal Article
PL  - United States
TA  - Rev Sci Instrum
JT  - The Review of scientific instruments
JID - 0405571
SB  - IM
EDAT- 2021/03/03 06:00
MHDA- 2021/03/03 06:01
CRDT- 2021/03/02 01:00
PHST- 2021/03/02 01:00 [entrez]
PHST- 2021/03/03 06:00 [pubmed]
PHST- 2021/03/03 06:01 [medline]
AID - 10.1063/5.0030341 [doi]
PST - ppublish
SO  - Rev Sci Instrum. 2021 Feb 1;92(2):024701. doi: 10.1063/5.0030341.