Here's now the promised update with 16-bit TPDF dither. This is also good for comparing how much dither vs truncation makes difference in real world.

CS4328 (1-bit 64x oversampling delta-sigma)

Updated numbers THD=0.002%, IMD=0.003%.

1 kHz sine:

<p><a href="/monthly_2013_07/CS4328-1k.png.df27de96ed3830ef16e548317e4c4dad.png" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28194" src="/monthly_2013_07/CS4328-1k.png.df27de96ed3830ef16e548317e4c4dad.png" class="ipsImage ipsImage_thumbnailed" alt=""></a></p>

19 + 20 kHz sine:

<p><a href="/monthly_2013_07/CS4328-imd.png.e743b23f2e95321237d2dd72f15fc04a.png" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28195" src="/monthly_2013_07/CS4328-imd.png.e743b23f2e95321237d2dd72f15fc04a.png" class="ipsImage ipsImage_thumbnailed" alt=""></a></p>

DF1700 + PCM1700 (18-bit 8x oversampling R2R ladder)

Updated numbers THD=0.005%, IMD=0.024%.

1 kHz sine:

<p><a href="/monthly_2013_07/PCM1700-1k.png.eb52a7aae3e519ae22a6e1f2be3b6bc3.png" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28196" src="/monthly_2013_07/PCM1700-1k.png.eb52a7aae3e519ae22a6e1f2be3b6bc3.png" class="ipsImage ipsImage_thumbnailed" alt=""></a></p>

19 + 20 kHz sine:

<p><a href="/monthly_2013_07/PCM1700-imd.png.7f924ed6ecc39b2e533381e44a129d72.png" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28197" src="/monthly_2013_07/PCM1700-imd.png.7f924ed6ecc39b2e533381e44a129d72.png" class="ipsImage ipsImage_thumbnailed" alt=""></a></p><p><a href="/monthly_2013_07/CS4328-1k.png.2c79b4ca65ea4651bd4a53f4f4b46efb.png" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28444" src="/monthly_2013_07/CS4328-1k.png.2c79b4ca65ea4651bd4a53f4f4b46efb.png" class="ipsImage ipsImage_thumbnailed" alt=""></a></p><p><a href="/monthly_2013_07/CS4328-imd.png.4b0bee8ab883bcb91f245783dffd5a97.png" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28445" src="/monthly_2013_07/CS4328-imd.png.4b0bee8ab883bcb91f245783dffd5a97.png" class="ipsImage ipsImage_thumbnailed" alt=""></a></p><p><a href="/monthly_2013_07/PCM1700-1k.png.9099dd7e59c39936b6183bd0c5bfb129.png" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28446" src="/monthly_2013_07/PCM1700-1k.png.9099dd7e59c39936b6183bd0c5bfb129.png" class="ipsImage ipsImage_thumbnailed" alt=""></a></p><p><a href="/monthly_2013_07/PCM1700-imd.png.00b7c2baef1bb472c974d9eacec2af7e.png" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28447" src="/monthly_2013_07/PCM1700-imd.png.00b7c2baef1bb472c974d9eacec2af7e.png" class="ipsImage ipsImage_thumbnailed" alt=""></a></p>