Amplifier with improved output voltage swing

Details Amplifier with improved output voltage swing Amplifier with improved output voltage swing

1997-12-12

1999-08-17

Pascal, Robert

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330261, H03F 345

Patent

active

059399430

ABSTRACT:
An amplifier comprising an amplifier stage having an input terminal (1) for receiving an input signal; an output terminal (2) for supplying an output signal; an amplifier transistor (4); and a load (5). The load (5) comprises a first (T1) and a second (T2) field effect transistor. The current-voltage characteristic of the load (5) is similar to the diode characteristic of a conventional load formed by means of a diode-connected field effect transistor. The threshold voltage of the load (5) comprising the first (T1) and the second (T2) field effect transistor is much smaller than the threshold voltage of a conventional diode, which results in an improved output voltage swing of the amplifier stage.

REFERENCES:
patent: 4371844 (1983-02-01), Boeke
patent: 5361042 (1994-11-01), Gist

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