SDAA561 October   2026 AFE58JD18 , AFE58JD28 , AFE58JD48 , THS4551 , THS4567

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
    1. 1.1 Basic Knowledge of Fully Differential Amplifier
    2. 1.2 Advantages of Fully Differential Amplifiers
  5. 2Fully Differential Signal Conditioning Circuit
    1. 2.1 Fully Differential Adder Circuit
    2. 2.2 Single-Ended Input Fully Differential Adder Circuit
    3. 2.3 Fully Differential Current-to-Voltage Conversion Circuit
    4. 2.4 Fully Differential Active Filter Circuit
  6. 3Summary
  7. 4References

2 Fully Differential Signal Conditioning Circuit

Based on the brief introduction above, we have gained a basic understanding of differential amplifiers. Just as with operational amplifiers, the effect of feedback verifies that the voltage at the non-inverting input of a fully differential amplifier equals the voltage at the inverting input. This principle can be used to determine the relationship between the circuit's output and input. Furthermore, in practical designs, the two feedback resistors in a fully differential amplifier are typically chosen to have equal values ​​to simplify calculations.