Resistors R14 and R18 are the burden resistors that would be selected based on the current range used
and the turns-ratio specification of the CT (not required for shunt). The value of the burden resistor for this
design is around 13 Ω. The anti-aliasing circuitry consisting of R and C follows the burden resistor. The
input signal to the converter is a fully differential input with a voltage swing of ±920 mV maximum with gain
of the converter set to 1. Similar to the voltage channels, the common mode voltage is selectable to either
analog ground (GND) or internal reference on channels connected to LSP3 and LSP4.