Razavi Electronics2 Lec10. Small-Signal Analysis of Bipolar Differential Pair 

sir, you are simply the best. your book design of analog CMOS integrated circuits is very helpful.

01:25 - Intro and Review 06:22 - Summery of Diff. Amp. Properties 13:10 - Differential Amplification Derived from Large-Signal Model 17:18 - Small-Signal Analysis of Bipolar Diff. Amp.: Condition for Constant Tail Voltage 22:33 - Lemma: Virtual Ground at the Tail Node 31:20 - Calculating the change in currents and then showing that BE voltage changes exactly the same amount that the input signal has changed, proving that for small input differential signal, the tail node potential would not change, it is virtual ground. Or, showing that for linear approximation, tail node potential doesn't change! 34:35 - Simplification for Input Differential Small Signal

This is a seriously good lecture series.

You are the best.

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

you're a great teacher

Thank You

Did anyone else notice, whenever he turns to write something on the board, the noise increases ?

Thanks

even I love from the bgm

does anyone know that Do we need a capacitive coupling on the inputs ??

Why in 28:53 Ic1 = Iee/2 * (1+(DV/DVt)) where the Iee/2 comes mathematicaly speaking?