Title :
Nonlinearity correction of the integrated time-to-digital converter with direct coding
Author :
Pelka, R. ; Kalisz, J. ; Szplet, R.
Author_Institution :
Mil. Univ. of Technol., Warsaw, Poland
Abstract :
A method and computer program for automated identification and correction of the nonlinearity error in time-to-digital converter (TDC) with 200-ps resolution, implemented on a single FPGA device is presented. The nonlinearity error is identified and corrected by the neural network trained with the fast Levenberg-Marquardt learning rule. Resulting nonlinearity was improved from 1.25 LSB (least significant bit) to about 0.12 LSB (24 ps).
Keywords :
Newton method; analogue-digital conversion; automatic test software; computerised instrumentation; delay circuits; error correction codes; field programmable gate arrays; learning (artificial intelligence); neural nets; quantisation (signal); signal resolution; time measurement; automated identification; computer program; delay buffers; direct coding; error correction; fast Levenberg-Marquardt learning rule; fast Newton method; integrated time-to-digital converter; latch flip-flops; neural network; nonlinearity correction; parallel tapped delay lines; quantization; single FPGA device; CMOS logic circuits; Computer errors; Delay effects; Delay lines; Error correction; Field programmable gate arrays; Military computing; Propagation delay; Pulse measurements; Time measurement;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1996 Conference on
Conference_Location :
Braunschweig, Germany
Print_ISBN :
0-7803-3376-4
DOI :
10.1109/CPEM.1996.547342
