Abstract
A conductance measurement circuit includes an operation amplifier, a bias current source, a compensation current source and an output stage circuit. A first input end of the operation amplifier receives a reference voltage, a second input end of the operation amplifier is coupled to a tested end, and an output end thereof outputs a compensation voltage. The bias current source provides a bias current to the bias end. The output stage circuit provides a trans-conductance value and an output end equivalent resistance, generates an output current according to the compensation voltage, and generates an output voltage according to the output current and the trans-conductance value.