Current source type current output circuit using current mirrors

Details Current source type current output circuit using current mirrors Current source type current output circuit using current mirrors

1987-08-07

1988-08-23

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including current mirror amplifier

330105, 330106, 330293, H03F 134

Patent

active

047663960

ABSTRACT:
A current source type current output circuit for applying to a load a current which is proportional to an input includes an amplifier of the type receiving a current and producing a voltage, and a feedback circuit for feeding back an output of the amplifier to an input terminal of the amplifier. The feedback circuit is made up of a first, a second, and a third current mirror circuit, and a first, a second, and a third resistor. An output terminal of the amplifier is connected to an input terminal of the second current mirror circuit via the third resistor and to an input terminal of the first current mirror circuit via a series connection of the first and second resistors. The load is connected to the intermediate point of the serial connection of the first and second resistors. An output terminal of the second current mirror circuit is connected to an input terminal of the third current mirror circuit. Output terminals of the first and third current mirror circuits are connected to an input terminal of the amplifier such that a current which is proportional to an input is fed to the load. A reference terminal of each of the first and second current mirror circuits is connected to a first power source, and a reference terminal of the third current mirror circuit is connected to a second power source.

REFERENCES:
patent: 4290024 (1981-09-01), Yokoyama
"Design of OP AMP Circuit (Revised)", by Nobuo Okamura, published by CQ Publishing Co., Ltd., Tokyo, Japan, pp. 87-88, Aug. 10, 1973.
"A High-Voltage IC for a Transformerless Trunk and Subscriber Line Interface", by Denis W. Aull et al., IEEE Journal of Solid-State Circuits, vol. SC-16, No. 4, pp. 261-265, Aug. 1981.

Affiliated with

Also associated with

Rating

Current source type current output circuit using current mirrors does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Current source type current output circuit using current mirrors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Current source type current output circuit using current mirrors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-837801