ECE 5/411 CMOS Analog IC Design: Lecture Notes for Spring 2014

Jan 21: lec1_ece5411.pdf – Course introduction, Analog models

Jan 23: lec2_ece5411.pdf – Analog models contd., review of small signal analysis, derivation of g_m and r_o. Diode-connected MOSFETs.

Jan 28: lec3_ece5411.pdf – Output resistance, body transconductance (g_mb), Small-signal analysis.

Jan 30: lec4_ece5411.pdf – Small-signal analysis Example, Transition frequency (f_T).

Feb 4: lec5_ece5411.pdf – Gain-speed tradeoff, Temperature dependent behavior, Short-channel design example. Start current mirrors.

Feb 6: lec6_ece5411.pdf – Current mirrors, Current mirror mismatch, Supply independent biasing, Beta multiplier reference (BMR).

Feb 11: lec7_ece5411.pdf – ISSCC: No in class lecture. Watch video lecture: lec7_ece5411_video – BMR start-up circuit, short-channel biasing.

Feb 13: lec8_ece5411.pdf – Review material from Lecture 7: BMR start-up circuit, short-channel biasing,

Feb 18: lec9_ece5411.pdf – Cascode current mirrors.

Feb 20: lec10_ece5411.pdf – Wide-swing cascode biasing, Regulated drain mirror.

Feb 25: lec11_ece5411.pdf – NICE Conference: No in class lecture. Watch video lecture: lec11_ece5411_video – Start single-stage amplifiers.

Feb 27: lec12_ece5411.pdf – Conclude Current Mirrors: Long-channel and short-channel bias circuits, systematic current mismatch, Single-stage amplifiers – CS stage.

Mar 4: lec13_ece5411.pdf – Common source (CS) amplifier: low-frequency small and large signal behavior, diode-connected and current mirror load.

Mar 6: lec14_ece5411.pdf – CS amplifier: Source degeneration, linearity vs gain trade-offs. Start source follower: low-frequency behavior, input range, applications and limitations.

Mar 11 (Tuesday): Midterm 1: Closed book, closed notes. Sample Midterm 1.

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

Mar 13: lec15_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 18: lec16_ece5411.pdf – Cascode amplifier, Folded Cascode amplifier, Miller effect, poles in a system. Start CS frequency response.

Mar 20: lec17_ece5411.pdf – CS frequency response, RHP zero, pole-splitting, Miller compensation.

Mar 25&27: Spring break from instruction.

Apr 1: lec18_ece5411.pdf – Conclude pole splitting, SF, CG, Cascode frequency response.

Apr 3: lec19_ece5411.pdf – Start Differential Amplifiers-Biasing and common mode range.

Apr 8: lec20_ece5411.pdf –  Diff-amps – large signal behavior, half circuit analysis.

Apr 10: lec21_ece5411.pdf –  Diff-amps – common-mode analysis, CM equivalent circuit, CMRR and its significance, differential and single-ended CM discussion, CMFB loop overview. Diff-amp with current mirror load.

Apr 15 (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 17: lec22_ece5411.pdf – Diff-amps –Frequency response Diff-amp detailed analysis. Start Opamps (Read ahead in the textbooks: Razavi Chapters 9&10, CMOS Chapter 24).

Apr 19:  Project Help Session: project_help_session.pdf, opamp_design_slides.pdf

lec_proj1_ece511_video, lec_ece511_proj1.pdf – Discussion on Opamp design project from a previous year.

Apr 22: lec23_ece5411.pdf – Telescopic Opamp – replica biasing, limitations. Folded-Cascode Opamp- differential and common-mode gains, CMRR, input-CMR, rail-to-rail input CMR topology.

Apr 24: lec24_ece5411.pdf – Two-stage Opamps. Negative feedback systems – overview, loop-gain, time-domain settling.

Apr 29: lec25_ece5411.pdf – Opamp Stability: loop-gain, closed-loop stability, phase margin. STB analysis: examples, 2^nd-order system settling behavior, phase margin (see demo Matlab files).

May 1:  lec26_ece5411.pdf – Opamp: Finite DC gain, loop-bandwidth and transient settling, closed-loop gain and settling accuracy, slewing in opamps. Opamp_design_slides.pdf

May 6: lec27_ece5411.pdf – Start Bandgap references (BGR): Temp-co’s, CTAT, PTAT, ZTC reference design.

May 8: SPIE Conference: No in-class lecture. Watch lecture video (lec28_ece5411_video). lec28_ece5411.pdf – Low-VDD BGR, speed and noise issues. Course conclusion.

May 8 (Thursday) 12 (Monday): Project Report Due by Email

May 15 (Thursday): Final Exam: 5:00-7:00 PM, Closed book, closed notes. Sample Final Exam. You are allowed a cheat sheet (only one side of an A4 sheet). Do bring your calculators.

MATLAB Files

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

Study guide for using reference books

The correspondence between the topics covered in lectures and the reference textbooks is available here.

Lecture Videos

Pre-recorded lecture videos from 2011 can be viewed here.