Fast inverting operational amplifier - has input passed between precise and coarse amplifiers and has feedback loops

摘要

The fast inverting operational amplifier has an imprecise amplifier (V1) connected between its input (E) and output (A) terminals and having a high cutoff frequency. A precise amplifier (V2) connects the input terminal to the non-inverting input of the first amplifier. The input terminal is connected directly to the inverting input of the first amplifier. A feed-back resistor (Rr) is connected between the output (A) and the inverting input (e1) of the imprecise amplifier (V1) and, similarly, a feed-back capacitor (C) is similarly connected in the circuit of the precise amplifier (V2). Series resistors (Re, Rp) are incorporated in both the input leads of the latter.