Is there a voltage range specified for linear operation of the current sensing outputs on the MP6543C?
I noticed when sampling two phase currents on my BLDC, that if the resistor values are too large on the SOx outputs, there is a gentle clipping of the waveforms. If I either warmed up that same motor, or decreased the SOx resistor values (both options reducing the SOx output amplitude), the waveforms no longer clipped. Attached below are the raw 12bit ADC plots of these samples, the first is a cold motor, the second a warm motor.
The datasheet does not specify this linear range. Can MPS please provide a spec for this?