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Anti-Aliasing filter design between ADRF6510 and ADC

Question asked by ILoveQQ on Oct 31, 2011
Latest reply on Nov 1, 2011 by ILoveQQ

Hi Sir,

In ADRF6510 datasheet Figure 56, the anti-aliasing filter choose 500ohm load

resistor to define the input impedance of the ADC.

Why it choose 500ohm?

Is it easier to design matching circuit?

Is 200ohm ok ??  

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