CMOS current source circuit

Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage

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Details

327538, 327513, 323312, 323315, G05F 110

Patent

active

059822279

ABSTRACT:
An improved CMOS current source circuit capable of constantly generating a certain reference voltage irrespective of an analog supplying voltage, a substrate temperature, and a temperature variation, which includes a start unit for driving the CMOS current source circuit in accordance with a start signal; a bias current generating unit driven by the start unit for generating a bias current in accordance with an analog voltage, a substrate voltage, and a temperature variation; a current input unit for inputting a bias current; and a current compensation unit for receiving a bias current through the current input unit and for compensating the bias current in accordance with an analog voltage, a substrate voltage, and a temperature variation and for generating a reference current.

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