Noise Optimum of FET Front-End with Constant A 0 A . (a) Show that after minimizing Eq. (6.60), the noise fraction due to the FET is 𝜓. Eq. (6.60) (b) Given a shunt-feedback TIA with a single-pole...


Noise Optimum of FET Front-End with Constant A0

A.


(a) Show that after minimizing Eq. (6.60), the noise fraction due to the FET is 𝜓.


Eq. (6.60)


(b) Given a shunt-feedback TIA with a single-pole voltage amplifier and values for A0

A, CD, and CI, find the input pole fI
and amplifier pole fA
necessary to achieve a desired
 and Q.


(c) For what range of
 are the solutions for fI
and fA
valid? Assume that the feedback resistor must remain below RF(max).


(d) Derive Eq. (6.63).


Eq. (6.63)



Dec 12, 2021
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