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Hi,
I would like to ask you some basic questions as below.
1) FSR = DR = +/- Vref
To secure max DR, we should use Vref/2 (=VCM) as mid point of input opamp(+V), correct?
2) In case of using "Unipola"
Will you tell me merits and demerits when we use "unipola" input?
My understanding is,
* Merits
- Opeamp number to drive input is just one. (= input circuit is simple, power consumption is lower, etc)
* Demerits
- Cannot remove "common-mode noise"
- DR becomes half(1/2), that is to say, "0 - Vref" range. (output code is "0 - 7FFFF" )
How about my idea?
3) Input circuit in case of unipola use
When we use "unipola", how should we design input circuit?
Just connect "VIN_M" pin to GND, OK?
Or something register using is better? Or connect to 1/2Vref via register??
I would appreciate your advice to understand well.
Best Regards,