A Modefied Active Current Mirror

Based on the analysis of the clamped,input,voltage current mirror,a modified active current mirror is presented. According to the result of simulating by specreS simulator with BSIM3v3 transistor model parameters of Austria Mikro Systeme 0.6μm n-well CMOS technology. The current mirror achieves high current transfer accuracy in five,order range of input current, and offers resolution higher than 10bits(error term less than 1/2LSB). It is suitable for the 5MHz sampling rate ADC circuits.