Cselt-Centro Studi E Laboratori Telecomunicazioni S.p.a.

Sgs Microelettronica Spa

Michelangelo Mazzucco

Vanni Poletto

Marco Siligoni

Mario Sartori

A system for automatically controlling the gain-bandwidth product of operational amplifiers, wherein a 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 by the frequeny of a control signal sent to the system input. The reference amplifier is highly compensated in the configuration of voltage follower.

System for automatically controlling the gain-bandwidth product of

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.

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Santa Maria Tempio, Italy

Michelangelo Mazzucco