Semiconductor differential amplifier circuit with feedback bias

Details Semiconductor differential amplifier circuit with feedback bias Semiconductor differential amplifier circuit with feedback bias

1980-07-07

1983-02-01

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330255, 330257, 330258, 330259, 330260, H03F 345, H03F 316

Patent

active

043718434

ABSTRACT:
An input differential amplifier stage (10), which feeds an output stage (20), has a feedback loop originating at a node (N.sub.1) in one branch, for controlling the current-source transistor (M.sub.5) of that stage. The feedback loop is characterized by a direct connection to the gate electrode of a transistor (M.sub.8) which drives the output stage (20), while the output at another node (N.sub.2), in the other branch of the differential amplifier stage (10) is fed to another transistor (M.sub.9) which also drives the output stage (20).

REFERENCES:
patent: 4213098 (1980-07-01), Tsiviois
patent: 4284959 (1981-08-01), Heagerty et al.
DeMan, "A Low Input Capacitance Voltage Follower in a Compatible Silicon--Gate Mos--Bipolar Technology", IEEE Journal of Solid--State Circuits, vol. SC--12, No. 3, Jun., 1977, pp. 217-224.
Senderowicz et al., "High--Performance NMos Operational Amplifier", IEEE Journal of Solid--State Circuits, vol. SC--13, No. 6, Dec., 1978, pp. 760-766.

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