CURRENT COMPARATOR CIRCUIT AND METHOD

原文（中国語）

A current comparator circuit and method. The circuit includes a first input and a second input to receive currents Iand I. The circuit includes a current-to-voltage converter and a switch. The circuit includes a first and second current branches comprising a current input terminals coupled to the first input and the second input. In a first mode the switch is closed to cause an input voltage at the first input and at the second input to be equal. In a second mode the switch is opened whereby a current flows through the current-to-voltage converter and voltage AV appears across the first input and the second input. In both the first mode and the second mode, the current flowing through the first branch and the current flowing through the second branch are equal to (I+I)/2.