Title :
Basic principles of accurate dynamic current mirrors
Author :
Wegmann, G. ; Vittoz, E.A.
Author_Institution :
Electron. Lab. LEG, Swiss Federal Inst. of Technol., Lausanne, Switzerland
fDate :
4/1/1990 12:00:00 AM
Abstract :
Basic principles and limitations of accurate dynamic current mirrors based on dynamic analogue techniques are presented. The accuracy of dynamic current mirrors is independent of the mismatch of the transistors comparing the mirror, because of the same transistor is sequentially used at the input and the output of the mirror. Limitation of such dynamic current mirrors and the influence of clock phase delays are shown through simulated, analytical and experimental results. Improvements are proposed that allow the performance of dynamic current mirrors to be increased
Keywords :
active networks; amplifiers; analogue circuits; delays; amplifier offset compensation; clock phase delays; dynamic analogue techniques; dynamic current mirrors; transistors;
Journal_Title :
Circuits, Devices and Systems, IEE Proceedings G
