Ask Question, Ask an Expert


Ask Electrical & Electronics Expert

Project: Design a single output active load differential amplifier for 4V peak-to-peak output swing and phase margins of 60o or greater. Use Vdd = 5V.

293_Load differential amplifier.jpg


An amplifier is to be realized that meets the following specifications:
1) A differential to single-ended voltage gain Ad > 96dB 
2) An output voltage swing: >4V peak-to-peak.

3) A unity gain bandwidth fu > 90MHz.

4) Phase margin PM > 60o
5) Common mode input range > 3V

6) DC power dissipation < 0.4mW

7) You can use only one voltage source Vdd (5V) for your design. Do not use any resistor. 
Device Models:

Technology: AMI 0.6u 5V CMOS,  Power supply: VDD = 5 V
Transistor models:

TOX = 1.41E-8 m
U0 = 533.6953445 cm^2/V-s
VTH0 = 0.7086 V
TOX = 1.41E-8 m
U0 = 202.4540953 cm^2/V-s
VTH0 = -0.9179952V  
k’ = UO ⋅ COX , COX = εOX / TOX, εOX = 3.5E-13 F/cm


A reasonable procedure to use in this design is as follows:
1) Choose the basic building blocks and topology. 
2) Use a combination of hand calculations and simulations of simplified circuits (e.g. use an ideal current source with a parallel resistor instead of a MOS current source) to find your approximate circuit performance. 
3) Loop back to 2, but choose other topologies and circuit blocks and see how the results compare. (Exceeding the basic specifications on gain, output swing, and bandwidth does not earn extra credit). 
4) Optimize the device sizes and bias currents to minimize area and power of the most promising circuit.

5) Finish circuit design of current sources and do a complete set of final simulations. 
The report must be comprehensive, clear and short. The report must be typed. Maximum pages: 10 pages (11 point or larger font, 1 & 1/2 line spacing or larger).
Here is an outline of what the report muat contain with maximum page limits:
A) A brief introduction of the design problem and a statement of the design goals. 
B) Show how you approached the design specifications and how you computed the MOSFET widths and lengths. Describe your design insights and tradeoffs in sizing the transistors.
C) A circuit schematic exhibiting all the MOSFET widths and lengths and SPICE node numbers.

D) A table of all pertinent computed and simulated results. Whenever possible, the simulated values must be compared to the computed values and percentage errors given.

E) Discussion of your results and conclusions regarding the design. Describe and illustrate the differences between your find outd and simulated results. If you failed to meet up one or more of the design criteria, describewhy. Propose how your design could be further improved. Comment on any other features of the design as you see fit.

Electrical & Electronics, Engineering

  • Category:- Electrical & Electronics
  • Reference No.:- M93181

Have any Question? 

Related Questions in Electrical & Electronics

Suppose it is desired to digitize a 250-khz analog signal

Suppose it is desired to digitize a 250-kHz analog signal to 10 bits using a successive-approximation ADC. Estimate the maximum permissible conversion time for the ADC.

Consider the amplifier circuit shown in figure 1-1 both

Consider the amplifier circuit shown in Figure 1-1 Both MOSFETs are biased in the saturation region and have transconductances of gm. Derive the expression for the small signal transfer function, in terms of one or more ...

For the network of given figurea determine the voltage vabb

For the network of given figure: a. Determine the voltage V ab . b. Calculate the current I.

Determine the peak voltage of the full-wave bridge

Determine the peak voltage of the full-wave bridge rectifier, shown in Fig. 3.3a, assuming the diodes are ideal but have a forward voltage drop (offset voltage) of 0.7 V. The input voltage is 120 V AC .

A phs system is used to store electric energy from midnight

A PHS system is used to store electric energy from midnight to 5:00 am. The reservoir is cylindrical with 200m radius. Just before midnight, the depth of water in the reservoir is 10m and the water head is 100m. To store ...

For the transistor in the previous problem compute the load

For the transistor in the previous problem, compute the load power and the efficiency of the circuit when the transistor is in the cutoff region. Assume that the collector current is 10mA in the cutoff region.

A find the theacutevenin equivalent circuit for the network

a. Find the Thévenin equivalent circuit for the network external to the resistor R of given figure. b. Find the current through R when R is 2Ω, 30Ω, and 100Ω.

Repeat the calculations in example 154 for stainless steel

Repeat the calculations in Example 15.4 for stainless steel instead of cast iron. Use the same material dimensions and operating conditions, and compare the machining times for the two materials. Example 15.4 A flat piec ...

For a particular junction for which nt16 a capacitance cj

For a particular junction for which nt=1.6, a capacitance Cj of 1.8 pF is measured for a reverse junction voltage of 2 V, and 0.2 pF for a voltage of 10 V. What are the corresponding values of Vo, Co and C1 at 0 V?

Download ca 20 different bird calls from the internet and

Download ca. 20 different bird calls from the internet and create a neuronal network that allocates the different sounds to the respective birds. Alternatively: record concert pitch a with several music instruments and c ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

A cola-dispensing machine is set to dispense 9 ounces of

A cola-dispensing machine is set to dispense 9 ounces of cola per cup, with a standard deviation of 1.0 ounce. The manuf

What is marketingbullwhat is marketing think back to your

What is Marketing? • "What is marketing"? Think back to your impressions before you started this class versus how you

Question -your client david smith runs a small it

QUESTION - Your client, David Smith runs a small IT consulting business specialising in computer software and techno

Inspection of a random sample of 22 aircraft showed that 15

Inspection of a random sample of 22 aircraft showed that 15 needed repairs to fix a wiring problem that might compromise

Effective hrmquestionhow can an effective hrm system help

Effective HRM Question How can an effective HRM system help facilitate the achievement of an organization's strate