Circuit for automatically controlling the gain-bandwidth product

Details Circuit for automatically controlling the gain-bandwidth product Circuit for automatically controlling the gain-bandwidth product

1988-04-07

1989-05-30

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including gain control means

330140, 330307, H03G 330

Patent

active

048354902

ABSTRACT:
A circuit for automatically controlling the gain-bandwidth product of operation amplifiers, where gain-bandwidth product (G*B) of one of the amplifiers placed on the same chip as the amplifiers to be controlled is measured and the resulting signal is used to control through a bias circuit the gain-bandwidth products of all the amplifiers, the value of these products being presettable through the frequency of a control signal sent to the circuit input. The reference amplifier is highly compensated for and placed in the configuration of voltage follower.

REFERENCES:
patent: 3967208 (1976-06-01), Baylac et al.
patent: 4439744 (1984-03-01), Kumar et al.
patent: 4760347 (1988-07-01), Li et al.

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