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3 cards from this section. Quick, good the night before a test.
What is the primary advantage of using active loads in amplifiers?
Think about how the load interacts with the amplifier.
Define bandwidth in the context of an amplifier.
Consider the frequency limitations of an amplifier.
What is the effect of an active load on the gain of an amplifier?
Think about the purpose of active components.
True or False: Increasing output resistance will increase the bandwidth of an amplifier.
Recall the relationship between resistance and bandwidth.
A common emitter amplifier with an active load is designed with specific NMOS and PMOS characteristics: NMOS with K' = 100 µA/V^2, and PMOS with K' = 50 µA/V^2. Calculate the expected gain if both devices are biased for equal current of 1 mA.
Use the relationship between transconductance and biasing to solve this.
Design a circuit that showcases both active and passive loads and predicts the gain between these configurations using specified component values.
Think of what happens when you switch the type of load and analyze each phase.
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