Analog Signal Processing Fall 2012

Instructor : Dr Juan Alvarez

T.A : Trung Mai Van

Homework #3

Due Date : January 14th, 2013

Please noted that

is the right-most digit of your student ID. If , take

is the second right-most digit of your student ID. If , take

For an example : if your student ID is ILI 110168, and . In the case,

your student ID is ILI 10008, and .

1. Bias Point Simulation

Draw the circuits below in Capture CIS and then simulate them in Bias Point

Mode to work out the voltage at each node and current on the branch.

.

DellSticky Notem=1n=2

DellSticky Notem=1n=2

2. Thevenin or Norton equivalent circuit

2.1 Find the Thevenin voltage , Thevenin resistance and Norton

current of the following circuits between terminals a and b.

a) Calculate the above quantities manually.

b) Using Pspice to check your calculations.

2.2 Find the Thevenin voltage , Thevenin resistance and Norton

current of the following circuits between terminals a and b by using Pspice.

DellSticky Notem=1n=2

3. Maximum Power Transfer

Using Pspice to find the resistance of the load in order to receive the

maximum power from the circuit.

4. Operational Amplifier

Draw the circuit below with Capture CIS and then use Pspice to check the

transfer function of a commonly-used op-amps circuit.

Note : Use the OPAM component in Analog library.

Circuit 1 : Inverting Amplifier

Simulation No.

1

2

Hints : In the first simulation, you should perform with bias point mode but

transient mode works for the second.

5. Analog Filter Design

5.1 Using Matlab to design Butterworth Low-pass filter with the

specifications below

Order : 2

Cut-off frequency :

Realize the transfer function worked out from Matlab by Sallen Key

Model for low-pass filter.

Test the result in Pspice with a AC sweep mode. The drawing must

show the transfer function in frequency domain with the y-axis scale in

dB and x- axis in Hz.

5.2 Design a low-pass filter using ladder network with the specifications

below follow the design table and procedure come with the slides

introduced about Analog Filter Design.

Order : 5

Cut-off frequency : 3 KHz

Realize the circuit in Pspice and check its frequency response in AC

Sweep mode.