Amplifiers – With semiconductor amplifying device – Including differential amplifier
Patent
1984-07-06
1985-11-19
Mullins, James B.
Amplifiers
With semiconductor amplifying device
Including differential amplifier
330253, 330257, H03F 345
Patent
active
045545154
ABSTRACT:
Two input stages (10,12) are interconnected so that their input common mode voltage ranges to one side of signal ground are combined to provide a common mode voltage range substantially equal to the supply voltage. One stage has N-channel differential input transistors (N1,N2), while the other stage has P-channel differential input transistors (P3,P4). The input current branches of the stages are interconnected by current mirror transistors (N6,N7) so that signal current is shared. The output (22) is taken from one branch of the N-type stage (10) and coupled to an output stage (24) with frequency compensation (C,R).
REFERENCES:
patent: 4377789 (1983-03-01), Hoover
Burson Kyle L.
Early Scott H.
Ganesan Apparajan
AT&T Laboratories
Mullins James B.
Ulbrich Volker R.
Wan G.
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