Memphis 16-MCD 000 Guide de l'utilisateur télécharger pdf (Page 13)

10 MATLAB Interface

11 Results

Amplitude-dBFS

f-Frequency-MHz

FFT

Amplitude-dBFS

f-Frequency-MHz

FFT

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MATLAB Interface

Also supplied is a simple MATLAB interface to the evaluation board. It consists of an engine

communicating with the board and returning the data vector on call. The calling syntax is:

Initialize: acquiredata(‘find’)

Acquire data: data = acquiredata(‘acquire’)

The following typical results were taken from the ADS-ADX evaluation module, using a filtered Agilent

8644B clock source, which provided each ADC a 400-MHz sampling clock. When using the onboard ADX

interleaving technology, this results in a combined 800-MSPS sampling rate of the analog input signal.

Another filtered Agilent 8644B was used to provide a -1-dBFS single tone into the EVM. The results are

displayed in Figure 2 through Figure 5 .

Figure 2. 100-MHz

Figure 3. 230-MHz

SLAU247 – August 2008 ADS5474 ADX Evaluation Board for Interleaving 13

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Memphis 16-MCD 000 Guide de l'utilisateur Page 13