A study of the effect of temperature changes on the interpolating time counter

• Autorzy: Sondej D. , Szplet R.
• Języki publikacji: EN

Abstrakty

EN

This paper presents an analysis of the impact of ambient temperature changes on main parameters of the interpolating time counter. The performed tests reveal that a relatively small change in the ambient temperature of 1°C causes a measurement error of the counter as large as 3.5 ps. The thorough research of two stages of interpolation of the counter allowed determining the main sources of the error. One of them is the temperature drift of widths of four-phase clock (FPC) segments in the first interpolation stage (FIS). It equals 2.5 ps/°C. The widths of FPC phases directly influence the active range of the second interpolation stage (SIS) and its offset. The test results also show that the temperature drift of the offset has a greater impact on the measurement accuracy than the temperature-driven changes of quantization steps in SIS. The presented conclusions are the first step to develop a new method for reducing the impact of changes in the ambient temperature on the measurement accuracy of the interpolating time counter.

Słowa kluczowe

EN

time interval measurement; time-to-digital conversion; two-stage interpolation; time counter

• Wydawca: Wydawnictwo PAK
• Czasopismo: Measurement Automation Monitoring
• Rocznik: 2015
• Tom: Vol. 61, No. 7
• Strony: 302--304
• Opis fizyczny: Bibliogr. 7 poz. rys., wykr.

Twórcy

autor

Sondej D.

• Military University of Technology, 2 Gen. S. Kaliskiego St., 00-908, Warszawa 49

autor

Szplet R.

• Military University of Technology, 2 Gen. S. Kaliskiego St., 00-908, Warszawa 49

Bibliografia

• [1] Carbone P., Kiaeiand F. Xu. S.: Design, Modeling and Testing of Data Converters. Chapter VII: R. Szplet, Time-to-digital Converters”, Springer, pp. 211-246, 2014.
• [2] Henzler S.: Time-to-Digital Converters. Springer, 2010.
• [3] Kwiatkowski P., Szymanowski R., Szplet R.: Identification of the dynamic parameters of fast carry chains and global clock networks in Spartan-6 FPGA device. Measurement Automation and Monitoring, vol. 59, no. 8, pp. 757-759, 2013 (in Polish).
• [4] Szplet R., Sondej D., Grzęda G.: Precise and fast time-to-digital converter with multi-edge coding in independent coding lines. International Instrumentation and Measurement Technology Conference, Montevideo, 12-15 May 2014.
• [5] Szplet R., Sondej D., Grzęda G.: Interpolating time counter with multi-edge coding. 2013 Joint UFFC, EFTF and PFM Symposium, pp. 321-324, 21-25 Jul., 2013.
• [6] Szplet R., Jachna Z., Kwiatkowski P., Różyc K.: A 2.9 ps equivalent resolution interpolating time counter based on multiple independent coding lines. Measurement Science and Technology, vol. 24, no. 3, 2013.
• [7] Cova S., Bertolaccini M.: Differential linearity testing and precision calibration of multichannel time sorters. Nuclear Instruments and Methods, vol. 77, no. 2, 1970.