Patent ID: 7449955
Filing Date: 2008-11-11
Classification: G05F

Abstract:
1. A chain-chopping current mirror, comprising: a plurality of output nodes; a bias source unit, comprising an input terminal and a reference voltage terminal, used for providing a reference bias at the reference voltage terminal thereof according to the current received by the input terminal thereof; a plurality of current mirroring units, wherein each of the current mirroring units comprises a bias input terminal and an output terminal, the bias input terminal is coupled with the reference voltage terminal of the bias source unit to receive the reference bias and an output current is given at the output terminal thereof according to the reference bias; and a plurality of switch components, wherein each of the switch components comprises a first terminal, a second terminal, a third terminal and a control terminal, the control terminal receives a clock signal, and according to the clock signal the switch component determines whether the first terminal thereof is coupled with the second terminal or the third terminal thereof; wherein, a number of the switch components is larger than 2, the first terminal of the i