Title :
Fast digital photon correlation system with high dynamic range
Author :
Engels, M. ; Hoppe, B. ; Meuth, H. ; Peters, R.
Author_Institution :
Fachhochschule Darmstadt, Germany
Abstract :
Photon correlation has many applications in different scientific and technological areas. Correlation functions are calculated from the measured data in real time with dedicated circuitry. In this paper we present a correlator system for lag times from 6.25 ns to 3436 s. The extraordinary dynamic range of 1012 is achieved with a multiple sampling time architecture. The key component of the correlator is the MTC72-chip used as a fast front end in the DSP-based system. The chip was implemented in 0.7 μm CMOS standard cells using HDL-models and synthesis. The algorithmic concepts and the design considerations for the front end chip are outlined
Keywords :
CMOS digital integrated circuits; application specific integrated circuits; correlators; digital signal processing chips; signal processing equipment; 0.7 micron; 6.25 ns to 3436 s; CMOS standard cell process; DSP-based system; HDL models; MTC72-chip; correlation functions; dedicated circuitry; fast digital photon correlation system; fast front end; high dynamic range; multiple sampling time architecture; Clocks; Correlators; Delay; Detectors; Digital signal processing chips; Dynamic range; Hardware; Light scattering; Sampling methods; Semiconductor device measurement;
Conference_Titel :
ASIC/SOC Conference, 2000. Proceedings. 13th Annual IEEE International
Conference_Location :
Arlington, VA
Print_ISBN :
0-7803-6598-4
DOI :
10.1109/ASIC.2000.880669
