<Dl> <Dd> <Dl> <Dd> υ o u t = A v υ i n R L R L + R o u t ≈ A v υ i n R L R o u t = A v R o u t υ i n R L ≈ − g m 2 R L υ i n (\ displaystyle (\ upsilon) _ (out) = A_ (v) \ (\ upsilon) _ (in) (\ begin (matrix) (\ frac (R_ (L)) (R_ (L) + R_ (out))) \ approx A_ (v) \ (\ upsilon) _ (in) (\ frac (R_ (L)) (R_ (out))) = (\ frac (A_ (v)) (R_ (out))) \ (\ upsilon) _ (in) R_ (L) \ approx - g_ (m2) R_ (L) (\ upsilon) _ (in) \ end (matrix))). </Dd> </Dl> </Dd> </Dl> <Dd> <Dl> <Dd> υ o u t = A v υ i n R L R L + R o u t ≈ A v υ i n R L R o u t = A v R o u t υ i n R L ≈ − g m 2 R L υ i n (\ displaystyle (\ upsilon) _ (out) = A_ (v) \ (\ upsilon) _ (in) (\ begin (matrix) (\ frac (R_ (L)) (R_ (L) + R_ (out))) \ approx A_ (v) \ (\ upsilon) _ (in) (\ frac (R_ (L)) (R_ (out))) = (\ frac (A_ (v)) (R_ (out))) \ (\ upsilon) _ (in) R_ (L) \ approx - g_ (m2) R_ (L) (\ upsilon) _ (in) \ end (matrix))). </Dd> </Dl> </Dd> <Dl> <Dd> υ o u t = A v υ i n R L R L + R o u t ≈ A v υ i n R L R o u t = A v R o u t υ i n R L ≈ − g m 2 R L υ i n (\ displaystyle (\ upsilon) _ (out) = A_ (v) \ (\ upsilon) _ (in) (\ begin (matrix) (\ frac (R_ (L)) (R_ (L) + R_ (out))) \ approx A_ (v) \ (\ upsilon) _ (in) (\ frac (R_ (L)) (R_ (out))) = (\ frac (A_ (v)) (R_ (out))) \ (\ upsilon) _ (in) R_ (L) \ approx - g_ (m2) R_ (L) (\ upsilon) _ (in) \ end (matrix))). </Dd> </Dl> <Dd> υ o u t = A v υ i n R L R L + R o u t ≈ A v υ i n R L R o u t = A v R o u t υ i n R L ≈ − g m 2 R L υ i n (\ displaystyle (\ upsilon) _ (out) = A_ (v) \ (\ upsilon) _ (in) (\ begin (matrix) (\ frac (R_ (L)) (R_ (L) + R_ (out))) \ approx A_ (v) \ (\ upsilon) _ (in) (\ frac (R_ (L)) (R_ (out))) = (\ frac (A_ (v)) (R_ (out))) \ (\ upsilon) _ (in) R_ (L) \ approx - g_ (m2) R_ (L) (\ upsilon) _ (in) \ end (matrix))). </Dd>

Difference between common drain common source and common gate