amplifier) by multiplying the gain by the bandwidth (in hertz). For any given

operational amplifier, the gain-bandwidth product will be remain the same

regardless of the amount of feedback used.

output signal is determined by the sum of the input signals multiplied by the

gain of the amplifier:

E OUT = gain (E1 + E2 )

signal determined by multiplying each input signal by a different factor

(determined by the ratio of the input-signal resistor and feedback resistor) and

then adding these products:

R FDBK

R

R

x E1) + ( FDBK x E2) + ( FDBK + E3)]

E OUT= [(

R IN1

R IN2

R IN3

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