Accession Number : ADA263002


Title :   Dynamic Performance Comparison of the A/D Converters for the North Warning System


Descriptive Note : Final rept.


Corporate Author : MITRE CORP BEDFORD MA


Personal Author(s) : Babu, B N ; Wollman, Herbert B


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a263002.pdf


Report Date : Feb 1993


Pagination or Media Count : 135


Abstract : During the full-scale development of the AN/FPS-124 Radar, the Analog Devices Corporation (ADC) 12-bit, 4-MHz analog-to-digital (A/D) converter was selected as the only one that met the performance requirements of the system at that time. The ADC converters have been in operation for three years with no known problems; however, Paramax (formerly Unisys Corporation) is proposing to replace them with an A/D converter from Data Device Corporation (DDC). This paper describes these two converters and the digital test bed used to characterize them. Using the dynamic test results of the ADC converters as a baseline, the performance of the DDC unit is assessed and its applicability to the North Warning System based on the B2 requirements (integral and differential nonlinearities, monotonicity, spurious-free dynamic range, signal-to-noise ratio, and transient and overvoltage recovery responses) is evaluated. The performance of the new DDC converter was found to be better than the three-year- old units from ADC. However, neither unit met the overvoltage and transient response B2 requirements. Dynamic testing, A/D Converters.


Descriptors :   *COMPUTER PROGRAMS , *ANALOG TO DIGITAL CONVERTERS , *DYNAMIC TESTS , *WARNING SYSTEMS , TEST AND EVALUATION , REQUIREMENTS , TRANSIENTS , RATIOS , RECOVERY , TEST BEDS , DYNAMICS , INTEGRALS , SIGNAL TO NOISE RATIO , RADAR , TIME , FORTRAN , RESPONSE , SCALE , SIGNALS , ANALOGS , SINE WAVES , DYNAMIC RANGE , NOISE


Subject Categories : Electrical and Electronic Equipment
      Computer Programming and Software


Distribution Statement : APPROVED FOR PUBLIC RELEASE