Semiconductor integrated circuit having improved load drive char

Details Semiconductor integrated circuit having improved load drive char Semiconductor integrated circuit having improved load drive char

1986-03-12

1987-09-29

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including field effect transistor

323315, 330288, H03F 318

Patent

active

046971548

ABSTRACT:
The semiconductor integrated circuit includes a first power supply terminal and a second power supply terminal; a first transistor and a second transistor having gates (or bases) connected in common; an input terminal and an output terminal connected to each source (or each emitter) of the first and second transistors, respectively, an output voltage level being obtained from the output terminal in accordance with an input signal voltage level supplied to the input terminal; and a current mirror circuit operating so that a first current flows through the first transistor in proportion to a second current flowing through the second transistor, the value of the second current is determined in accordance with the output voltage level and a value of a load connected between the output terminal and the second power supply terminal; and thereby, a voltage level supplied to the gates (or bases) of the first and second transistors is varied in accordance with the value of the second current. The above semiconductor integrated circuit may also be used as a constant current output circuit by providing an output terminal in one of the transistors of the current mirror circuit, for supplying a predetermined constant current, and connecting a variable resistor instead of the above load.

REFERENCES:
patent: 4442398 (1984-04-01), Bertails et al.
patent: 4450367 (1984-05-01), Whatley
patent: 4477737 (1984-10-01), Ulmer et al.

Affiliated with

Also associated with

Rating

Semiconductor integrated circuit having improved load drive char does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Semiconductor integrated circuit having improved load drive char, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Semiconductor integrated circuit having improved load drive char will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1591227