Rerurn to Romy the Cat's Site

Romy the Cat wrote:

A few things that juts comes to might mind regarding the Cosecant. Gordon says that it is a Passive Multibit DAC with a single Shinko Tantulum resistor “because only a resistor can be a linear device over the entire audio band”. Well, I presume it shell be a ladder of resistors for each bit but I would not argue on it. He can run bits around the same resistor I guess… what however is important is that in this configuration the stability of the resistor mush be immensely superb as the atomic participle of data is measured against the value of the resistor. None of the resistors are so stabile. Even if you go with Vishay 102 and have it with .0001% precession the temperature drift would offset the value of the resistor in time. As I understand the Cosecant DAC do not use any re-calibration concepts…

Actually I was wrong about it. I do not want to correct my Moronity above and better I post a correction.  I was under wrong impression that Gordon claims that he uses one restores for R2R conversion but in fact he use a resistor to do the I/V conversion after the DAC. That is fine and this rector has no overwhelming demands for temperature or value stability…

Rerurn to Romy the Cat's Site