Low voltage operational amplifier having a substantially full ra

Details Low voltage operational amplifier having a substantially full ra Low voltage operational amplifier having a substantially full ra

1987-02-24

1988-04-12

Wan, Gene

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330255, H03F 345

Patent

active

047377321

ABSTRACT:
A power amplifier particularly useful as a line driver operating at low power supply voltages is provided. An input portion comprising a differential input configuration is coupled to an output stage having a P-channel MOS transistor connected in series with an N-channel MOS transistor between two power supply voltage terminals. A control portion is coupled to both the input portion and the output stage for providing first and second control signals to the output portion. The control portion regulates the output quiescent current at a predetermined value independent of signal amplification provided by the input portion. The output signal can swing substantially between two power supply voltage potentials.

REFERENCES:
patent: 3895307 (1975-07-01), Furuhashi

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