ECE 5/418 Memory IC Design (PLL Design): Lecture Notes for Spring 2013

Jan 22: lec1_ece518.pdf and lec1_ece518_video – Course introduction, Memory design considerations, DRAM 1T1C cell, Array architecture, Wordline and Bitline concepts.

Jan 24: lec2_ece518.pdf and lec2_ece518_video – DRAM – Bitline capacitance, charge sharing, sensing concept, EQ, sense-amp design and operation, open array architecture.

Jan 29: lec3_ece518.pdf and lec3_ece518_video – DRAM – Write operation, folded array architecture, mbit layouts (6F² and 8F² cells), Cell capacitors (trench and buried types)

Jan 31: lec4_ece518.pdf and lec4_ece518_video – DRAM – ISO devices, full sense-amp circuit, Chip organization, Global/local decoding concepts, row and column decoders, PE-logic.

Feb 5: lec5_ece518.pdf and lec5_ece518_video – DRAM wordline drivers. Start SRAM – 6T cell.

Feb 7: lec6_ece518.pdf and lec6_ece518_video – SRAM – Butterfly curves, stability, 4T cells, Architectures, SRAM Characterization. PROMs, Start Flash memory.

Feb 12: lec7_ece518.pdf and lec7_ece518_video – EPROM, E²PROM, Flash Memory- device structure, CHE, FNT, NAND Fash cell programming, read and erase.

Feb 14: lec8_ece518.pdf and lec8_ece518_video – Start PLLs: Applications. Negative feedback system review: negative feedback amplifier.

Feb 19: lec9_ece518.pdf and lec9_ece518_video – Negative feedback loop for frequency multiplication, phase and instantaneous frequency concepts.

Feb 21: lec10_ece518.pdf and lec10_ece518_video – Phase detector - XOR, characteristics, linear range. Start phase frequency detector (PFD).

Feb 26: lec11_ece518.pdf and lec11_ece518_video – Finish PFD, Type-I PLL, PFD periodic noise, PFD circuit implementation.

Feb 28: lec12_ece518.pdf and lec12_ece518_video – Type-I PLL - issues. Review of negative feedback – loop gain, unity-gain frequency, first-order system.

Mar 5: lec13_ece518.pdf and lec13_ece518_video – Negative feedback loop stability – loop gain, unity-gain frequency, phase margin. Start Type-II PLL.

Mar 7: lec14_ece518.pdf and lec14_ece518_video – Type-II PLL: Charge-pump PLL topology, feedforward zero, derivation of K_pd,I and K_pd.

Mar 12: lec15_ece518.pdf and lec15_ece518_video – Charge-pump PLL contd.: Derivation of ω_u,loop, reference feedthrough rejection, 3^rd order PLL, a quick PLL design.

Mar 14: lec16_ece518.pdf and lec16_ece518_video – Closed-loop PLL response, Charge pump design issues, 3^rd-order PLL equations.

Mar 19: lec17_ece518.pdf and lec17_ece518_video – Charge pump: CP current mismatch, charge sharing. Charge Pump design techniques.

Mar 21: lec18_ece518.pdf and lec18_ece518_video –Voltage Controlled Oscillators, Oscillator basics, (VCO Simulation using PSS Analysis).

Spring Break

Apr 2: Project#1 progress report due.

Apr 2: lec19_ece518.pdf and lec19_ece518_video – Ring oscillators, VCOs: Tuning linearity, tuning schemes, Delay cells: replica biasing

Apr 4: lec20_ece518.pdf and lec20_ece518_video – Power supply sensitivity, improved linearity and symmetric delay loads, Large swing VCOs, Supply regulated VCOs. TSPC Clock Dividers

Apr 9: lec21_ece518.pdf and lec21_ece518_video – Differential ring VCOs with large swing, pseudo-differential delay cells, VCO Buffers, Start PLL Noise Analysis.

Apr 11: lec22_ece518.pdf and lec22_ece518_video – PLL Noise Analysis, Start DLLs. PLL Noise Analysis.zip. Extra slides: Oscillator Phase Noise

Apr 11 Apr 16: Project#1 final report due.

Apr 16: lec23_ece518.pdf and lec23_ece518_video – DLLs: VCDL, false locking, stuck at min/max delay.

Apr 18: lec24_ece518_video – Finish DLLs: PFD issues, Phase-only detectors, MDLLs, phase interpolation, Hybrid PLL/MDLL. DLL Lecture Slides.

Apr 23: lec25_ece518.pdf and lec25_ece518_video – Start Clock and Data Recovery (CDR).

Apr 25: lec26_ece518.pdf and lec26_ece518_video – CDR contd.

Apr 30 (Tuesday): Midterm Exam. Closed book, closed notes and computer. One page (A4 size, both sides) cheat-sheet allowed. Bring your calculators. Sample Exam.

May 2 lec27_ece518_video – Finish CDRs. CDR Lecture Slides.

May 7: Project#2 progress report due.

May 7:  lec28_ece518_video – Integer-N Frequency synthesizers

May 9:  lec29 – Fractional-N Frequency synthesizers.

May 14: Project#2 Final report due.

MATLAB Files

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

Note regarding the lecture videos

These recordings of lectures are experimental at this point. The videos are uploaded next day after the class if they are recorded properly, otherwise they may not be posted.

Students attending the course at BSU may use these videos for review. However, it is highly recommended that students take notes in class instead of listening passively.