I have a few question on AD5293 in datasheet.
1.Based on formula on page 20 in the datasheet about how to calculate RWB and RWA, I have following two questions.
- Is it possible for RWB to achieve 0 ohmn, if D=0?
- Does it mean that the maximum of the RWA is 48.8 kohmn? (assuming using 50kohmn, and D = 1023 maximum)
2.With the wiper resistance (60ohmn typical), how can we calculate the exact resistance?
3."In the zero-scale condition, a finite total wiper resistance of 120 Ω is present. Regardless of the setting in which the part is operating."
Does it mean we can never get 0ohmn for AD5293?