An analog front end circuit with pulse width modulation current compensation comprises sensing a current condition and determining if the current condition is a positive or negative current condition. An appropriate control signal is determined according to the current condition and sent to turn on a positive current electronic switch if the current condition is a negative current condition or sent to turn on a negative current electronic switch if the current condition is a positive current condition. A positive compensation current flows to offset negative parasitic current when the positive current electronic switch is turned on and a negative compensation current flows to offset positive parasitic current when the negative current electronic switch is turned on. A master control unit utilizes pulse width modulation signals of various widths associated with various current conditions to be sent to turn on the positive electronic switch or the negative electronic switch.