Folded-cascode amplifier stage

Amplifiers – With semiconductor amplifying device – Including differential amplifier

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

330257, 330265, H03F 326

Patent

active

059072628

ABSTRACT:
An amplifier circuit that offers high bandwidth operation and a high slew rate is disclosed. The amplifier circuit may also have an input voltage swing down to the negative rail which is particularly suitable for low voltage applications having a single power source. In one embodiment, the amplifier circuit amplifies a difference voltage between first and second input voltages to produce an output voltage, and includes: an analog voltage-to-current converter for receiving the first and second input voltages and producing complementary current signals; and a complementary mirror output stage coupled to receive the complementary current signals at respective mirror circuits. Each of the respective mirror circuits includes a pair of base-coupled transistors having their emitters respectively connected to supply potentials through resistors, and the complementary current signals from the analog voltage-to-current converter are respectively connected to at least one of the emitter of the base-coupled transistors for the respective mirror circuits.

REFERENCES:
patent: 4284958 (1981-08-01), Pryor et al.
patent: 4313082 (1982-01-01), Neidorff
patent: 4587495 (1986-05-01), Osawa et al.
patent: 4797631 (1989-01-01), Hsu et al.
patent: 4814723 (1989-03-01), Botti
patent: 4935704 (1990-06-01), Gross
patent: 5019789 (1991-05-01), Graeme et al.
patent: 5374897 (1994-12-01), Moraveji
patent: 5384549 (1995-01-01), Araki
patent: 5399991 (1995-03-01), Moraveji
patent: 5402433 (1995-03-01), Stiscia
patent: 5420540 (1995-05-01), Butler
patent: 5471172 (1995-11-01), Chiu et al.
patent: 5473623 (1995-12-01), Fahey et al.
patent: 5512859 (1996-04-01), Moraveji
"Precision Rail-to-Rail Input & Output Operational Amplifier", (OP284/OP484), Analog Devices, Inc., 1995.
"Voltage Feedback Amplifier", Bipolar Circuits and Technology Meeting 9.1, p. 145, IEEE, 1993.
Technical Manual, "Single +5V, Fully Integrated, 1.2Gbps Laser Diode Driver," (MAX3261) Maxim Integrated Products, Inc., 1995.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Folded-cascode amplifier stage does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Folded-cascode amplifier stage, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Folded-cascode amplifier stage will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-403193

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.