Figure Q1(a) shows a 4 bits Digital-to-Analogue Converter (ADC) device using a summing operational amplifier. QI (a) Vc R4 = 1k2 S4 R = 1k2 R3 = 2k2 S3 R2 = 4k2 S2 Vo R1 = 8k2 S1 Figure QI(a) (i) Derive the output voltage, Vo if all switch is connected to Vec. Obtain the value of V. if switch, S&S;S2S1 configurations are shown in Table Q1(a). Assume Ve = 5V. Table QI(a)(ii) S4 S: S2 S V. 1 1 0 1 1 1

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Figure Q1(a) shows a 4 bits Digital-to-Analogue Converter (ADC) device using a
summing operational amplifier.
QI
(a)
Vc
R4 = 1k2
S4
R = 1k2
R3 = 2k2
S3
R2 = 4k2
S2
Vo
R1 = 8k2
S1
Figure QI(a)
(i)
Derive the output voltage, Vo if all switch is connected to Vec.
Obtain the value of V. if switch, S&S;S2S1 configurations are shown in Table
Q1(a). Assume Ve = 5V.
Table QI(a)(ii)
S4 S: S2 S V.
1
1 0
1
1
1
Transcribed Image Text:Figure Q1(a) shows a 4 bits Digital-to-Analogue Converter (ADC) device using a summing operational amplifier. QI (a) Vc R4 = 1k2 S4 R = 1k2 R3 = 2k2 S3 R2 = 4k2 S2 Vo R1 = 8k2 S1 Figure QI(a) (i) Derive the output voltage, Vo if all switch is connected to Vec. Obtain the value of V. if switch, S&S;S2S1 configurations are shown in Table Q1(a). Assume Ve = 5V. Table QI(a)(ii) S4 S: S2 S V. 1 1 0 1 1 1
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