# Question 4.19: Objective: Design a JFET source-follower circuit with a spec...

Objective: Design a JFET source-follower circuit with a specified small-signal voltage gain.

For the source-follower circuit shown in Figure 4.57, the transistor parameters are: $I_{DSS} = 12 mA, V_{P} = −4 V$, and $λ = 0.01 V^{−1}$ . Determine $R_{S}$ and $I_{DQ}$ such that the small-signal voltage gain is at least $A_{v} = v_{o}/v_{i} = 0.90$.

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