Tool/software: WEBENCH® Design Tools
hi,
I am designing isolated AC voltage sensor using ISO244 using (TMSF28377D0.i have used voltage divider to scale down voltage va=vo(R2/R1+R2) is within range of ISO244 further ISO244 has gain of 1/3 V/V so differential output of ISO244 is va*1/3 with 2.5 V common mode voltage and my ADC range is 0-3V so I used TLV6001 with gain of 0.75 and offset voltage is 1.65.so output voltage is vo= va*1/3*0.75. my question is how can I make output voltage equal to real voltage inside DSP.
v1=(((AdcaResultRegs.ADCRESULT5)*3/9046-1.65)*outputfactor); // outputfactor is (R2/R1+2)*1/3*0.75
but when I write this inside CCS and check value of v1 its not correct.