Inverting amplifier vs Non-inverting amplifier

S No.

Parameter

Non-inverting amplifier

Inverting amplifier

1.

Type of feedback

Negative, Voltage series feedback

Negative, Voltage shunt feedback

2.

Gain of the feedback circuit (B)

B = 1+ 

B = 1+ 

3.

Closed loop voltage gain

AVF =  (ideal) Or

     =  (Exact)

AVF =   Or  =       (Exact)

4.

Value of closed loop
voltage gain

AVF Always greater than or equal to 1 .

AVF can be greater than or less than 1.

5.

Input Resistance

RiF = (1+Av)Ri

Input resistance increases due to the negative feedback.

RiF = R1 (Ideal)

Input resistance decreases due to the negative feedback.

6.

Bandwidth

fF = (1+Avβ)fo

fF = (1+Avβ)fo

7.

Phase relation

Input and output voltages are in phase.

Input and output voltages are 180o out of phase.

8.

Configuration