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What is the ADC bandwidth of the AD1937 at sampling rates higher than 48 kHz?

Question asked by audioguy on Aug 8, 2018

Hello,

 

I have an application that requires sampling at 96 and possibly 192 kHz with more than the "normal" 20 kHz audio bandwidth. The data sheet for the AD1937 shows the typical ADC stop-band filter response at 48 kHz, but doesn't mention higher sample rates. Is that information available, or does it just scale with the sample rate?

 

Also, a quick look at the registers in the data sheet didn't show any user-controlled parameters for the anti-alias filter filter, although I did see a switch for the high-pass. Is the anti-alias filter fixed?

 

Thanks!

--jim

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