4DSP Support Forum

Products => FMC Products => FMC150 => Topic started by: fmcuser on March 11, 2015, 03:50 AM

Title: AC coupling effect of ADC
Post by: fmcuser on March 11, 2015, 03:50 AM

I am using an ADC of FMC150 on ML605. The ADCs on FMC150 are AC coupled. There are capacitors in front of these ADCs. I input multiple waveform e.g. 100-kHz square pulses to one of the ADCs. The waveform that were sampled by the ADC was distorted. I think this is due to the frequency characteristics of the capacitors in front of the ADC.
Can anybody give me any advice to remove this AC coupling effect?

Title: Re: AC coupling effect of ADC
Post by: arnaudNL on March 11, 2015, 12:06 PM

Dear Sir,


Not as I am aware of. The most obvious solution is to use a DC coupled card, the FMC151 is the DC coupled version of the FMC150.


Best Regards,
Arnaud

Title: Re: AC coupling effect of ADC
Post by: arnaudNL on March 16, 2015, 05:46 AM

Dear Sir,


Do you need any more information about this issue before I close this topic?


Best Regards,
Arnaud

Title: Re: AC coupling effect of ADC
Post by: arnaudNL on March 17, 2015, 07:55 AM

This topic is being closed because the issue is considered as resolved by 4DSP. Feel free to create a new topic for any further inquiries.