Re: [casper] KatADC vs ASIAA ADC

Hi Dan Thanks for your input. For 800 MHz BW, I am looking for 2048 spectral channels. If that is a tall order, we could settle for 1024. I am hoping to double the number of channels for halving the BW. For eg. BW NumChannels 8002048 4004096 2008192 I see why you are suggesting

Re: [casper] KatADC vs ASIAA ADC

John We do have switchable analog filters that define the 200, 400 and 800 MHz bandpasses in our IF processors. So decimation in sample domain should still work. Yes, that's true. In our case we want to avoid the complexity of switching in various bandpass filters for the narrowband case.

Re: [casper] KatADC vs ASIAA ADC

Hi John If you can sample 800 MHz bandwidth, then can't you use a digitial bandpass filter to get to the lower bandwidths? Gerry On 3/21/2014 11:43 AM, John Ford wrote: John We do have switchable analog filters that define the 200, 400 and 800 MHz bandpasses in our IF processors. So

Re: [casper] KatADC vs ASIAA ADC

hi gopal, how many spectral channels do you need? for 800 MHz bandwidth, you can use a pair of asiaa dual adc's at 2Gsps, and get four signal inputs per roach2, and clock the fgpa at 250 MHz. . for 400 MHz bandwidth, i suggest you use a pair of adc16 boards in quad input mode (sample at 960