Half-Circuit Find the differential half-circuit for the differential a

Question

Notify Me Bookmark

Half-Circuit Find the differential half-circuit for the differential amplifier shown in Fig. 2 and use it to derive an expression for the differential gain Ad = vo/vid in terms of gm, RD, and RS. Neglect the Early effect. What is the gain with Rs = 0? What is the value of Rs in terms of 1/gm that reduces the gain to half this value? Fig. 2

Image text

Half-Circuit Find the differential half-circuit for the differential amplifier shown in Fig. 2 and use it to derive an expression for the differential gain $A_{d} = v_{o} / v_{i d}$ in terms of $g_{m}, R_{D}$ , and $R_{S}$ . Neglect the Early effect. What is the gain with $R_{s} = 0$ ? What is the value of $R_{s}$ in terms of $1 / g_{m}$ that reduces the gain to half this value? Fig. 2