70. Single - ended Vs. Differential Signaling and Basic Model of a Differential Amplifier
The chapter provides a comprehensive overview of single-ended versus differential signaling along with an introduction to the basic model of a differential amplifier. It highlights the differences in operation and configuration between single-ended and differential amplifiers while discussing circuit activation, signal feeding techniques, and the importance of differential signal pairs. The chapter concludes with a discussion on the components of differential signaling, including differential mode signals and common mode signals, as well as the mathematical relationships among them.
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What we have learnt
- Single-ended amplifiers operate with one input signal relative to ground, while differential amplifiers utilize two input signals.
- The output signal of a differential amplifier is based on the difference between the two input signals, emphasizing the significance of common mode and differential mode components.
- Understanding how to transition between different signal representations, such as single-ended and differential signals, is essential for analyzing differential amplifiers.
Key Concepts
- -- SingleEnded Amplifier
- An amplifier that accepts one signal input relative to a common ground, amplifying the voltage or current signal.
- -- Differential Amplifier
- An amplifier that accepts two signals, amplifying the difference between the two input signals while rejecting signals that are common to both.
- -- Common Mode Signal
- The component of a differential signal that is common to both inputs, which can negatively impact the performance of differential amplifiers if not properly managed.
- -- Differential Mode Signal
- The difference between two signals in a differential amplifier, which is the desired signal to be amplified.
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