Op-amp A1 actively drives digital pot U1 wiper terminal PW0 to force V_PBO = V_B while drawing negligible current through resistance R_WB, thus cancelling the effect of R_W

Authors	Stephen Woodward
Main Document	Article «Op-amp wipes out DPOT wiper resistance»
Description	Figure 1
File Format / Size	PDF / 16 Kb
Document Language	English

Slices

Op-amp A1 actively drives digital pot U1 wiper terminal PW0 to force VPBO = VB while drawing negligible current through resistance RWB, thus cancelling the effect of RW