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ADXL001-70z eval board noise on unfiltered XOUT

Question asked by jrsikken on Sep 12, 2014
Latest reply on Sep 22, 2014 by neilzhao

I see an 500kHz 40mVrms noise signal on the unfiltered XOUT. I am interested into frequencies up to 10kHz and I use the same opamp circuit like in CN0303 in our board. The 500kHz signal is going through the whole opamp circuit.

 

QUESTIONS:

- what is that 500kHz signal? The datasheet only mentiones an internal 1MHz and 125kHz clock.

- is it smart to place a 10kHz (15k and 1nF) between ADXL001 and opamp circuit?

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