In the amplifier of Fig. 4-9(*a*), V_{DD} = 15 \text{V}, R_L = 3 kΩ, and R_F = 50 MΩ. If the MOSFET drain characteristics are given by Fig. 4-9(*b*), determine the values of the quiescent quantities.

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The dc load line is constructed on Fig. 4-9(*b*) with v_{DS} intercept of V_{DD} = 15 \text{V} and i_D intercept of V_{DD}/R_L = 5 \text{mA}. With gate current negligible (see Section 4.3), no voltage appears across R_F, and so V_{GS} = V_{DS}. The *drain-feedback* *bias line* of Fig. 4-9(*b*) is the locus of all points for which V_{GS} = V_{DS}. Since the Q point must lie on both the dc load line and the drain-feedback bias line, their intersection is the Q point. From Fig. 4-9(*b*), I_{DQ} ≈ 2.65 \text{mA} and V_{DSQ} = V_{GSQ} ≈ 6.90 \text{V}.

Question: 4.SP.19

(a) With negligible gate current, (4.2) gives
[l...

Question: 4.SP.18

(a) By KVL,
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Question: 4.SP.17

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Question: 4.SP.16

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[l...

Question: 4.SP.25

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Question: 4.SP.20

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Question: 4.SP.13

(a) Using the given data in (4.6) leads to
[late...

Question: 4.SP.12

(a) Since i_G = 0, V_{GSQ} = V_{GG}[/lat...

Question: 4.SP.11

(a) With negligible gate current, (4.3) leads t...

Question: 4.SP.10

(a) Solving (4.2) for v_{GS} and...