Math Problem Statement
Determine the output voltage of a differential amplifier for input voltages of 320µV and 260µV. The differential gain of the amplifier is 4000 and the value of CMRR is 200
Solution
To determine the output voltage of a differential amplifier given the input voltages and , the differential gain , and the common-mode rejection ratio (CMRR), we can follow these steps:
-
Convert the CMRR from dB to linear scale:
-
Calculate the common-mode gain : The common-mode gain can be derived from the relationship: Therefore:
-
Calculate the common-mode voltage :
-
Calculate the differential input voltage :
-
Calculate the output voltage : The output voltage is the sum of the differential output and the common-mode output:
Substituting the values:
Thus, the output voltage is approximately .
Do you want further details or have any questions?
Here are 8 relative questions that expand on the above information:
- How does a high CMRR value benefit the performance of a differential amplifier?
- What are the potential sources of common-mode signals in a differential amplifier circuit?
- How can you improve the CMRR of a differential amplifier?
- What role does the differential gain play in the overall performance of a differential amplifier?
- Can you describe how the output voltage would change if the input voltages were swapped?
- What are the practical applications of differential amplifiers in real-world circuits?
- How do temperature variations affect the performance of differential amplifiers?
- What is the impact of mismatched resistors in the input stage of a differential amplifier?
Tip: When solving amplifier problems, carefully consider the units of all quantities involved. Convert all values to a consistent unit system (e.g., volts, millivolts, microvolts) before performing calculations.
Ask a new question for Free
By Image
Drop file here or Click Here to upload
Math Problem Analysis
Mathematical Concepts
Differential Amplifiers
Operational Amplifiers
Formulas
Output voltage of a differential amplifier formula
Theorems
-
Suitable Grade Level
Advanced Engineering
Related Recommendation
Calculating Common-Mode Voltages for a Differential MOSFET Circuit
Calculate Output Voltage of Differential Amplifier with Given Input Voltages
Op-Amp Differential Amplifier Circuit with Input Voltages v1 and v2
Calculate Output Voltage V₀ in an Op-Amp Difference Amplifier Circuit
Two-Stage Operational Amplifier Circuit Analysis and Output Voltage Calculation