Objective: Develop a better understanding of amplifiers, applications, and various performance specific amplifiers.
Length: 90 minutes
Published Date: Jul 30, 04
Step(s) to complete
- View online seminar
- Complete the suggested assignments
- Complete the online test to receive a certificate from Bob Pease
Online Seminar:
The Use and Abuse of Amplifiers
About the Presentor: Bob Pease obtained a BSEE from MIT in 1961 and is Staff Scientist at National Semiconductor Corp., Santa Clara, California.
This seminar disscusses the different techniques that are needed for successfully designing with low noise, precision, and wide-bandwidth op amps.
About the Instructor: Bob Pease obtained a BSEE from MIT in 1961 and is Staff Scientist at National Semiconductor Corp., Santa Clara, California.
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Reading Assignment:
To look at various operational amplifiers in numerous applications, read "An Applications Guide for Op Amps".
Additional Resources:
- For more information on op amps (typical characteristics), linear operation, regulators and further applications refer to the following application note: AN-211.
- For more information on application, design and operation of wide-
band buffer amplifiers refer to the following application note: AN-227.
- Some questions will be referring to the following datasheets: LM107, LF411, LMC6081.
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Research Assignment:
Use application note AN-20 to solve the following questions as well as National Semiconductor's website:
- The LM107 amplifier is the National Semiconductor part used in all the applications found in AN-20. If you wanted to buy 60 parts of the TO-5 (H08C) package, how much would each part be? Are there any samples available? If so, what kind of package do the samples come in?
- The LM107 is an old operational amplifier. When it was introduced, it was one of the best operational amplifiers in the world. The LF411 is a newer op amp with lower offset current. On top of the LM411 product folder there is an upgraded part with improved input bias current and input voltage, which part is this? What is the most inexpensive, 1K unit cost for each part?
- The LF411 can be used in many LM107 applications. However, the LMC6081 can be used in some LM107 applications, but not others. Why not?
- The LF411 and LM107 can be used for some LMC6081 applications, but not others. Why not?
- The compensation trade off is discussed in the Inverting Amplifier and non-inverting amplifier application for the LM107, which normally uses an external compensation capacitor. What is the advantage of having a higher value of a compensation capacitor? What is the advantage of having a SMALLER value of a compensation capacitor?
CHECK ALL ANSWERS HERE
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