>> >> And an AD converter with 2.5 MS/S and 24 bits accuracy sigma delta which should be great for measurements and undisputably great sampling behavior for perfect delay lines, etc.: >> >> http://www.analog.com/en/analog-to-digital-converters/ad-converters/ad7760/products/product.html >> (eval board: http://www.analog.com/en/evaluation/eval-ad7760/eb.html ) >>
>Sure, but no antialiasing filters up front. How about clocking the whole show, etc. Also notice that that one doesn't claim 24 bit accuracy. The SNR/dynamic range specs work out to about 16 bits accuracy at the highest sampling rate, and can go up to 18-20 bits accuracy if you knock the sampling rate down to 77kHz. It's a 24-bit sigma-delta modulator, not 24 bits of actual output performance. E On Thu, Mar 13, 2014 at 6:55 AM, STEFFAN DIEDRICHSEN <sdiedrich...@me.com>wrote: > > On 12 Mar 2014, at 15:53, Theo Verelst <theo...@theover.org> wrote: > > > A DA converter with 20 bits (actual) accuracy, pretty low noise, and a > settling time of 1 microsecond, driven by more or less standard 3 wire > interface: > > > http://www.analog.com/en/digital-to-analog-converters/da-converters/ad5791/products/product.html > > (eval board: http://www.analog.com/en/evaluation/eval-ad5791/eb.html ) > > > That doesn't mean it has a usable sample rate up to 1 MHz. After 1 us, the > glitch is over and you can turn on your S/H stage to take over the value. > Without a S/H stage, you have a nice noise floor from the glitches. IMO, > for 100 or 200 kHz, it might be workable, but not 1 MHz. > > > > > And an AD converter with 2.5 MS/S and 24 bits accuracy sigma delta which > should be great for measurements and undisputably great sampling behavior > for perfect delay lines, etc.: > > > > > http://www.analog.com/en/analog-to-digital-converters/ad-converters/ad7760/products/product.html > > (eval board: http://www.analog.com/en/evaluation/eval-ad7760/eb.html ) > > > > Sure, but no antialiasing filters up front. How about clocking the whole > show, etc. > > Take this one: > > http://www.analog.com/en/codec-afe/audio-codecs/ad1939/products/product.html > > Group delay can go down to 0.5 ms.That's about 17 cm audio thru air .... > > Best, > > Steffan > > > > > > -- > dupswapdrop -- the music-dsp mailing list and website: > subscription info, FAQ, source code archive, list archive, book reviews, > dsp links > http://music.columbia.edu/cmc/music-dsp > http://music.columbia.edu/mailman/listinfo/music-dsp > -- dupswapdrop -- the music-dsp mailing list and website: subscription info, FAQ, source code archive, list archive, book reviews, dsp links http://music.columbia.edu/cmc/music-dsp http://music.columbia.edu/mailman/listinfo/music-dsp
