Design of high precision analog output card based on FPGA
DOI:
CSTR:
Author:
Affiliation:

Key Laboratory of Instrumentation Science and Dynamic Testing,Ministry of Education State Key Laboratory of Electronic Measurement Technology, North University of China,Taiyuan 030051

Clc Number:

TN710

Fund Project:

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
  • |
  • Comments
    Abstract:

    Aiming at the problems of low precision and poor quality of analog signal acquisition in telemetry system, In this paper, a higher precision analog output card is designed under the trend of increasingly accurate, integrated and complex analog signal. In this design, FPGA centered logic controller and 16 bit high-precision DA converter are used to realize the high-precision DA conversion. The analog signal is switched out through the analog switch adg1606 with 16 bit channel, The output signal self check collects the analog signal in a round-loop switching mode at the switching rate of 175ns per channel through the analog switch, which ensures the high-quality acquisition of the output signal. After the design demonstration and test, the output voltage precision meets the design requirements ± 0.15%, the recovery voltage signal meets the design requirements ± 0.1%, which indicates that the output of analog signal is stable and reliable.

    Reference
    Related
    Cited by
Get Citation
Share
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:
  • Revised:
  • Adopted:
  • Online: September 05,2024
  • Published:
Article QR Code