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

[sid_siddharth]

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

[theminertom]

This is a seriously good lecture series.

[coolwinder]

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

[mnada]

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

[xGirija]

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

[ericfranciscogutierrezfria]

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

[alirezayeganegiabarghouei]

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