(b) Figure Q.4(a) is a non-inverting summing amplifier. (i) Express V, in terms of the inputs VA, VB and Vc. (ii) The circuit can also work as a simple digital-to-analogue converter with VA, VB and Vc as digital inputs. What is the analogue output, V, if VA-Vc=5 V and Va=0 V?

(b) Figure Q.4(a) is a non-inverting summing amplifier. (i) Express V, in terms of the inputs VA, VB and Vc. (ii) The circuit can also work as a simple digital-to-analogue converter with VA, VB and Vc as digital inputs. What is the analogue output, V, if VA-Vc=5 V and Va=0 V?

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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Concept explainers

Differential amplifier

There are two amplifying stages with common degeneration in a differential amplifier.

Question

(b) Figure Q.4(a) is a
non-inverting summing amplifier.
(i) Express V, in terms of the inputs VA, VB and Vc.
(ii) The circuit can also work as a simple digital-to-analogue converter with VA,
VB and Vc as digital inputs.
What is the analogue output, Vo if VA= Vc=5 V and Ve=0 V?
R
VA WW
VB
Vc
-
2R
ww
4R
www
4R
41.
www.
R
+Vcc
6-Vcc
R
Figure Q.4(a) Non-inverting summing amplifier.
Vo

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