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Synchronizing Multiple JESD204B ADCs for Emitter Position Location Reference Design

Texas Instruments

A common technique to estimate the position of emitters uses the amplitude and phase shift data of a signal derived from an array of spatially distributed sensors. For such systems: it is important to guarantee a deterministic phase relationship between the sensors to minimize errors in the actual measured data. This application design will discuss how multiple Analog to Digital Converters (ADCs) with a JESD204B interface can be synchronized so that thesampled data from the ADCs are phase aligned.

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Features

Synchronized 2 giga sample ADCs sampling at 3.072GHzSystem expandable to more than 2 ADCsPhase variation less than 1 ADC clock periodEasy to use software interface for control and data acquisitionExcellent spur and noise perfromance of ADC at 3.072GHzThis design is tested and includes software: demo hardware and a design guide.