ECE 5/411 CMOS Analog IC Design: Lecture Notes for Spring 2013

Jan 22: lec1_ece5411.pdf – Course introduction, Analog models (Chapter 9).

Jan 24: lec2_ece5411.pdf – Analog models contd., review of small signal analysis, derivation of g_m, r_o, body transconductance (g_mb), diode-connected MOSFETs.

Jan 29: lec3_ece5411.pdf – Small-signal analysis example, Transition frequency (f_T).

Jan 31: lec4_ece5411.pdf – Spectre simulation review, Temperature dependent behavior, gain-speed tradeoff, Short-channel design example.

Feb 5: lec5_ece5411.pdf – Start current mirrors, Current mirror mismatch, Supply independent biasing, Beta multiplier reference (BMR).

Feb 7: lec6_ece5411.pdf – BMR start-up circuit, short-channel BMR design.

Feb 12: lec7_ece5411.pdf – Cascode current mirrors, cascode output resistance.

Feb 14: lec8_ece5411.pdf – Regulated drain current mirror, Bias generation schemes, floating current mirror, conclude current references.

Feb 19: lec9_ece5411.pdf – Start single-stage amplifiers. Common source (CS) amplifier: low-frequency small and large signal behavior.

Feb 21: lec10_ece5411.pdf – CS amplifier: Source degeneration, linearity vs gain trade-offs.

Feb 26: lec11_ece5411.pdf – Source follower: low-frequency behavior, input range, applications (voltage buffer and level shifter) and limitations.

Feb 28: lec12_ece5411.pdf – Common gate (CG) amplifier, current buffer, Comparison of gain stages. Cascode amplifier, Lemma for estimating gain in amplifiers (A_v=-G_mR_out).

Mar 5: lec13_ece5411.pdf – Cascode amplifier contd., Folded cascode amplifier, Miller effect, poles and zeros in a system.

Mar 7: lec14_ece5411.pdf – CS frequency response, RHP zero.

Mar 12 (Tuesday): Midterm 1: Closed book, closed notes. Sample Midterm 1.

review1_ece5411.pdf and review1_5411_video – Review session for Midterm 1.

Mar 14: lec15_ece5411.pdf – CS frequency response:  RHP zero intuition, pole-splitting, Miller compensation.

Mar 19: lec16_ece5411.pdf – Generic two-stage amplifier model, pole splitting demo, SF & CG frequency response, input and output impedances.

Mar 21: lec17_ece5411.pdf – Cascode amplifier frequency response. Differential signaling: advantages, basic diff-pair: input-output characteristics, V_in,CM independent biasing.

Apr 2: lec18_ece5411.pdf – Diff-amps – large signal behavior, half circuit analysis.

Apr 4: lec19_ece5411.pdf – Diff-amps – common-mode analysis, CM equivalent circuit, CMRR and its significance, differential and single-ended CM discussion, CMFB loop overview.

Apr 9: lec20_ece5411.pdf – Diff-amps – current mirror load, frequency response Diff-amp detailed analysis. Start Opamps (Read ahead in the textbooks: CMOS Chapter 24, Razavi Chapters 9&10).

Apr 11: lec21_ece5411.pdf – Opamps: Gain and settling errors, non-linear settling (slewing), stability and frequency compensation.

lec_proj1_ece511_video, lec_ece511_proj1.pdf – Previous year’s project help and Opamp design overview.

Apr 16: lec22_ece5411.pdf – Slewing in Opamps, Telescopic and Folded cascode opamps.

Apr 19: lec23_ece5411.pdf – Folded-cascode opamp differential and common-mode gains, CMRR, input-CMR, rail-to-rail input CMR topology. Two-stage Opamps.

Apr 23 (Tuesday): Midterm 2: Closed book, closed notes. Sample Midterm 2.

review2_ece5411.pdf and review2_5411_video – Review session for Midterm 2. Review of RHP zero calculation.

Apr 25: lec24_ece5411.pdf – Opamp Stability: loop-gain, closed-loop stability, phase margin.

Apr 30: lec25_ece5411.pdf – STB analysis: examples, 2^nd-order system settling behavior, phase margin (see demo Matlab files).

May 2:  lec26_ece5411.pdf – Conclude Opamps: indirect compensation, feedforward compensation. Read Razavi Chapter 10 for two-stage opamp slewing.

May 7:  lec27_ece5411.pdf – Gain-boosting Opamps. Start Bandgap references (BGR): Temp-co’s, CTAT, PTAT, ZTC reference design.

May 9 (Thursday): Project Report Due

May 9:  lec28_ece5411.pdf – Finish BGR, Course conclusion.

May 16 (Thursday): Final Exam: 5:00-7:00 PM, Closed book, closed notes. You are allowed a cheat sheet (only one side of an A4 sheet).

MATLAB Files

The cumulative MATLAB files archive developed during the course is here.

Note regarding the lecture videos

Recorded lecture videos from 2011 can be viewed here.