we are using TMS570LS3137 microcontroller in our design. we need to understand Figure 7-1. MibADC Input Equivalent Circuit in more detail.
we need to calculate input ADC current. our Analog input voltage is given to pin AD1IN[4]( U18).
while calculating AD1IN[4]( U18) pin input current do we need to consider only on state bias current (IAOSB1) or should we also add leakage current of other channels also? In figure on state bias current is shown as addition of other channel leakage current. please explain this.
what is ther roll of Rsamp and Csamp? as per my understanding after Csamp there should be OPAM hence it should have high impedence. so maximum voltage Csamp can attain is equal to Cmux. please help us to understand this more.
sampling frequency in our case is 1KHz.