Constant current generation circuit of current mirror type havin

Details Constant current generation circuit of current mirror type havin Constant current generation circuit of current mirror type havin

1993-02-19

1994-09-20

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including current mirror amplifier

330300, H03F 316

Patent

active

053493079

ABSTRACT:
A constant current generation circuit includes a current mirror circuit having an input PMOS transistor connected in the form of a diode connected in series to a constant current source. With a constant current I.sub.0 of the constant current source, a drain voltage V.sub.2 of the input PMOS transistor is set to a value near to the threshold voltage of the input PMOS transistor. A gate of the input PMOS transistor is connected to a gate of output PMOS transistor having its drain connected to an emitter of a PNP transistor, which has its base biased with an appropriate voltage. With this arrangement, a drain voltage V.sub.1 of the output PMOS transistor can be made equal to the drain voltage V.sub.2 of the input PMOS transistor, and therefore, the input current I.sub.0 flowing through the input PMOS transistor can be made equal to an output current I.sub.1 flowing through the output PMOS transistor.

REFERENCES:
patent: 4237414 (1980-12-01), Stein
patent: 4801892 (1989-01-01), Yanakoshi et al.

Affiliated with

Also associated with

Rating

Constant current generation circuit of current mirror type havin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Constant current generation circuit of current mirror type havin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Constant current generation circuit of current mirror type havin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2430232