Bias circuit for multifunction bipolar integrated circuits

Details Bias circuit for multifunction bipolar integrated circuits Bias circuit for multifunction bipolar integrated circuits

G - Physics

05

F

328/198

G05F 3/20 (2006.01) G05F 3/22 (2006.01)

Patent

CA 1226340

ABSTRACT The bias circuit generates fixed and programmable currents for various functions in an integrated circuit from a voltage determined by a band gap reference. Programmable currents are obtained by a single programming resistor for all the functions, which resistor generates a low programming current; after passing through a low current PNP mirror, the programming circuit is raised to the values required by the individual functions of the integ- rated circuit by two stage amplification by means of NPN current mirror circuits.

453376

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