Razavi Electronics2 Lec14: Small-Signal Analysis of MOS Differential Pair

[coolwinder]

1:40 - Review of lecture 13
Examples
07:57 - Small-Signal Behavior of a MOS Diff Pair
22:40- Example withe Source Degeneration
38:00 - P-type differential pair examples

[enesog]

At 15:18: The current ID1 should be:
ID1 = (Iss/2) * sqrt(Un * Cox * W/L * Iss) * Delta_V
He forget to write down Iss into the equation.
"" please correct me if I am wrong""

[SunitaDevi-wfuz]

awesome sir sent me a mail n its here thank you so much sir. u r an angel

[sanyamjain]

Does anyone know how in the last example R1/2 was connected to ground?
I don't fully understand how differential changes cause the resistor to be connected to ground. Why don't we consider the output impedance offered by the other transistor?

[alexnoggle]

Does anyone else wonder why there aren't any other good lecture videos for electronics?

[jagadeesh]

In Lec12 it was said that Vp changes when Vcm changed. at 18:44 it was said that Vp doesnt not change when Vin increases. is this Vin signal source? How these two scenarios are different

[sohamlakhote]

Thank you sir!!
I have one doubt. Why are we placing current source in the bottom in NMOS Diff pair and in the top for PMOS diff pair. What will happen if I do the reverse?

[kavinduvindikasomadasa]

DC current devices should be open circuited...why did u put GND while considering small signal analysis?

[MixalisXaxalios]

32:24 if i use the equation: gm= μn cox w/l (Vgs-Vth), then gm => 2 gm, not to 2^0.5. What is going on ?

[mnada]

Waiting eagerly for circuit theory I & II and the rest of the series.

[therash]

Is channel kaa naam Long Kong kyon hai? 🤔