Re: How does the cock seed effect the Delta-Sigma ADC(CS552)
Hi,
As you can see from the data sheet of the manufacturer, performance of the ADC is better at 32 KHz. The only effect of the crystal frequency is on the maximum conversion data word rate, which is not critical in strainguage like low frequency applications. The maximum data word rate reduces to 1/4 th when you reduce your crystal frequency to 32KHz. At the same time, with low frequency, the accuracy of ADC improves. Also, since the system is designed for higher frequency, the SCK clock rate will be fast enough, which should work for lower crystal frequency as well.
I wonder why you do not simply change the crystal and see what happens; I can assure you it will not explode.
Regards,
Laktronics.