An integrated circuit has a current sense amplifier that includes a
voltage comparator having a first input, a second input and an output; a
first clamping device coupled between the first input of the voltage
comparator and a first input signal node, a second clamping device
coupled between the second input of the voltage comparator and a second
input signal node, a current mirror having a first side and a second
side, the current mirror first side including a first transistor coupled
between a voltage source and the first clamping device and the current
mirror second side including a second transistor coupled between the
voltage source and the second clamping device, and a sensing scheme
including an actively balanced capacitance coupled to the source and
drain of the second transistor.