About ADA4350

Hi

I have a question ADA4350.

I using S0,S1,S2. no using S3,S4,S5.

6pin FB3,5pin FB4,4pin FB5 and 1pin SWB OUT is connect to GND .it is no problem?

And ,

When using ADA4350 and ADC, Is it no problem to change using chip select?

Best Regards

HOD