Differential amplifier with rail-to-rail input capability and co

Details Differential amplifier with rail-to-rail input capability and co Differential amplifier with rail-to-rail input capability and co

1984-04-19

1985-11-26

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330252, 330257, H03F 345

Patent

active

045556733

ABSTRACT:
A differential amplifier operable between a pair of supply voltages that define a rail-to-rail supply range contains a pair of differential portions (20 and 22) that together provide representative signal amplification across the supply range, although neither differential portion individually does so. A current control (24) regulates operating currents (I.sub.N and I.sub.p) for the differential portions in such a way that the amplifier transconductance can be controlled in a desired manner as the common-mode part (V.sub.CM) of the amplifier input signal (V.sub.I+ and V.sub.I-) varies across the supply range. The transconductance is typically controlled to be largely constant. A summing circuit (26) selectively combines internal currents (I.sub.A, I.sub.B, I.sub.C, and I.sub.D) from the differential portions to generate at least one output signal (I.sub.O+ and I.sub.O-) representative of the input signal.

REFERENCES:
patent: 4333058 (1982-06-01), Hoover
patent: 4357578 (1982-11-01), Yokoyama
patent: 4377789 (1983-03-01), Hoover
"Linear & Data Acquisition Products", Data Manual, vol. 1, Harris Corp., 1977, pp. 2-59, 2-79.
"Analog: Data Acquisition, Communications, Linear", Data Manual, vol. 3, Harris Corp 1982, pp. 2-29, 2-78.

Affiliated with

Also associated with

Rating

Differential amplifier with rail-to-rail input capability and co does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Differential amplifier with rail-to-rail input capability and co, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Differential amplifier with rail-to-rail input capability and co will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-271476