(a) What are the gain and bandwidth of the individual amplifier stages as shown if the op amps have Ao = 105 and fT = 3 MHz? (b) What arethe overall gain and bandwidth of the three-stage amplifier? Figure P12.3160 k220 k2160 k220 k2(c)

Answered: Figure P12.3 160 k2 20 k2 160 k2 20 k2…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Related questions

Concept explainers

Question

(a) What are the gain and bandwidth of the individual amplifier stages as shown if the op amps have A_o = 10⁵ and f_T = 3 MHz? (b) What are
the overall gain and bandwidth of the three-stage amplifier?

Figure P12.3
160 k2
20 k2
160 k2
20 k2
(c)

Expert Solution

Gain:

The first stage is basically a non-inverting amplifier.

The gain of a noninverting amplifier is given by the below formula,

$A_{v} = \frac{R_{2} + R_{3}}{R_{3}}$

Here, $R_{2} = 160 kohm and R_{3} = 20 kohm$

$A_{v 1} = \frac{120 + 20}{20}$ = 7

The second stage is inverting the amplifier

$A_{v} = \frac{R_{2}}{R_{1}}$

$R_{2} = 160 kohm and R_{1} = 20 kohm$

$A_{v 2} = \frac{120}{20} = 6$

The overall gain of the circuit will be

As both amplifiers are in cascaded connection, the overall gain will be the product of individual gain

$A_{v} = A_{v 1} \times A_{v 2} = 7 \times 6 = 42$

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions