1; How to increase speed measurement and angular accuracy for AD2S1210?
2. Have higher accuracy solution than AD2S1210? Has any suggestion for it? Thank you.
In general there is very little you can do to improve the measurement speed for a given accuracy selection with the AD2S1210. As described in the datasheet by using a 10.24 MHz master clock you can achieve 1250 RPS (75000 RPM) maximum tracking rate at 12 bits. The master clock is the only variable that allows the tracking rate to be increased.
With regards to your second question the AD2S1210 is the latest solution we have in this portfolio. If you can give us additional information on the need for your application we may be able to identify other alternatives for you.