Method for interlocking switching current mirror and stabilizing output current

[0053] FIG. 3 is a circuit block diagram of a chain switching current mirror according to an embodiment of the present invention. Referring to FIG. 3 , the current mirror includes a bias voltage supply unit 301 , a plurality of current mirror mapping units 302 , a plurality of switching elements 303 and a plurality of output nodes OUT1˜OUTN.

[0054] The bias supply unit 301 provides a reference bias voltage B301 at the reference voltage terminal R301 according to the current received by the input terminal I301. Each current mirror mapping unit 302 includes a bias receiving end and an output end, and its bias receiving end is coupled to the reference voltage end R301 to receive the reference voltage B301. According to the reference voltage B301, the output terminal of the current mirror mapping unit 302 outputs an output current. Each switch element 303 includes a first terminal, a second terminal, a third terminal and a control terminal, and the control terminal receives the cl