Note: Multiplexed multiple-tau auto- and cross-correlators on a single field programmable gate array

作者：Mocsar G; Kreith B; Buchholz J; Krieger J W; Langowski J; Vamosi G^*

来源：Review of Scientific Instruments, 2012, 83(4): 046101.

DOI：10.1063/1.3700810

We introduce a new multiple-tau hardware correlator design for computing fluorescence correlation functions (CFs) in real time. Use of hardware resources is minimized by scheduling the computation of different segments of the CFs on a single correlator block. Simultaneous calculation of two multiple-tau autocorrelation (ACFs) and two cross-correlation functions (CCFs) is implemented in LabVIEW on a National Instruments field programmable gate array (FPGA) card with a minimal sampling time of 400 ns. Raw data are stored with a time resolution of 50 ns. The design can be easily adapted to other FPGA cards and extended to more inputs.

• 出版日期2012-4