Monolithically integrable lowpass filter circuit

Details Monolithically integrable lowpass filter circuit Monolithically integrable lowpass filter circuit

1980-01-25

1982-06-15

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330107, 330260, 330294, 330306, H03F 134

Patent

active

043353592

ABSTRACT:
Monolithically integrable lowpass filter circuit having at least one capacitor and one ohmic resistor includes a signal input, a circuit node connected to the signal input, a first series resistor connected between the signal input and circuit node, an operational amplifier, a signal output connected to the output of the operational amplifier and to the circuit node, a second resistor connected between the circuit node and the signal output, a third resistor connected between the circuit node and the non-inverting input of the operational amplifier, and a capacitor connected between the non-inverting input and ground, the signal output being further connected to the inverting input of the operational amplifier.

REFERENCES:
patent: 3831117 (1974-08-01), Fletcher et al.
patent: 3969682 (1976-07-01), Rossum
patent: 4223276 (1980-09-01), Nagano

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