R1
Rf
V1
R2
V2
R3
V3
Vo
Figure 1: Summing Op Amp Schematic.
1. Given circuit shown in Figure 1 with Rf = 47kΩ, design values for R1, R2, R3 so then the output Vo satisfies the following relationship:
$V_o = -(2.14V_1 + 1.00V_2 + 0.47V_3)$ (1)
2. Draw the output waveform Vo for the input waveforms V1 and V2 shown Figure 2 with V3 = 5V.
V1 Voltage (mV)
0
-500
-1000
0
5
10
15
Time (ms)
1000
500
0
V3 Voltage (V)
5
0
0
5
10
15
Time (ms)
0
0
5
10
15
Time (ms)
Figure 2: Input waveforms.
3. State the minimum and maximum values of $V_o$.