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SSCD IIT Kanpur · Basic Analog Building Blocks · 57 videos

EE613: High-frequency analog circuit design (2024)

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Videos in this playlist

Thumbnail for Lecture 1: Introduction & recap of MOS amplifiers (common-source, drain & gate); Differential amp.

Lecture 1: Introduction & recap of MOS amplifiers (common-source, drain & gate); Differential amp.

Thumbnail for Lecture 4: Slew rate in a 5-tansistor OTA; impedances at various nodes in a five-transistor OTA

Lecture 4: Slew rate in a 5-tansistor OTA; impedances at various nodes in a five-transistor OTA

Thumbnail for Lecture 5(a): Input & Output common-mode ranges in the five-transistor OTA with a pMOS input pair

Lecture 5(a): Input & Output common-mode ranges in the five-transistor OTA with a pMOS input pair

Thumbnail for Lecture 5(b): Step response with a capacitive load: VCVS vs. VCCS

Lecture 5(b): Step response with a capacitive load: VCVS vs. VCCS

Thumbnail for Lecture 5(c): Recap of small-signal impedances at each node in the five-transistor OTA

Lecture 5(c): Recap of small-signal impedances at each node in the five-transistor OTA

Thumbnail for Lecture 5(d): Common-mode and differential mode gain in a five-transistor OTA

Lecture 5(d): Common-mode and differential mode gain in a five-transistor OTA

Thumbnail for Lecture 7(1): Telescopic cascode: output swing limits & biasing; High-swing cascode current mirror

Lecture 7(1): Telescopic cascode: output swing limits & biasing; High-swing cascode current mirror

Thumbnail for Lecture 7(2): Folded cascode opamp: DC operating point, small-signal gain & swing limits

Lecture 7(2): Folded cascode opamp: DC operating point, small-signal gain & swing limits

Thumbnail for Lecture 8(1): Slew rate in a telescopic cascode opamp

Lecture 8(1): Slew rate in a telescopic cascode opamp

Thumbnail for Lecture 6: Telescopic cascode opamp: DC operating point, small-signal gain, swing limits

Lecture 6: Telescopic cascode opamp: DC operating point, small-signal gain, swing limits

Thumbnail for Lecture 8(2): Gain boosted cascode

Lecture 8(2): Gain boosted cascode

Thumbnail for Lecture 9: Poles and zeros; Finding location of zeros and approx. pole locations by inspection

Lecture 9: Poles and zeros; Finding location of zeros and approx. pole locations by inspection

Thumbnail for Lecture 10(1): Source follower: poles & zeros by inspection

Lecture 10(1): Source follower: poles & zeros by inspection

Thumbnail for Lecture 10(2): Poles & zeros in common-source amp.; Intuition behind pole locations; Miller approx.

Lecture 10(2): Poles & zeros in common-source amp.; Intuition behind pole locations; Miller approx.

Thumbnail for Lecture 11: Poles in the 5-transistor OTA; Zeros in the differential mode transfer function

Lecture 11: Poles in the 5-transistor OTA; Zeros in the differential mode transfer function

Thumbnail for Lecture 12(1): Poles & zeros in a cascode and telescopic cascode OTA

Lecture 12(1): Poles & zeros in a cascode and telescopic cascode OTA

Thumbnail for Lecture 12(2): Need for multi-stage OTAs; Unity-loop gain freq. & closed-loop BW in 1st order system

Lecture 12(2): Need for multi-stage OTAs; Unity-loop gain freq. & closed-loop BW in 1st order system

Thumbnail for Lecture 13: Using Root Locus to understand stability; Mapping it to Phase margin in the Bode plot

Lecture 13: Using Root Locus to understand stability; Mapping it to Phase margin in the Bode plot

Thumbnail for Lecture 14(1): Understanding the effect of poles & zeros in time domain; LHP zeros vs. RHP zeros

Lecture 14(1): Understanding the effect of poles & zeros in time domain; LHP zeros vs. RHP zeros

Thumbnail for Lecture 14(2): Using root-locus to understand ways to stabilize; Miller & Feed-forward compensation

Lecture 14(2): Using root-locus to understand ways to stabilize; Miller & Feed-forward compensation

Thumbnail for Lecture 15: Miller compensation; 2-stage Miller compensated OTA; Design choices; Dominant pole comp.

Lecture 15: Miller compensation; 2-stage Miller compensated OTA; Design choices; Dominant pole comp.

Thumbnail for Lecture 16: Two-stage Miller compensated OTA: Transistor-level implementation; Systematic offset

Lecture 16: Two-stage Miller compensated OTA: Transistor-level implementation; Systematic offset

Thumbnail for Lecture 17(2): Two-stage Miller OTA: Design example

Lecture 17(2): Two-stage Miller OTA: Design example

Thumbnail for Lecture 17(3): Ahuja compensation: Eliminating the RHP zero

Lecture 17(3): Ahuja compensation: Eliminating the RHP zero

Thumbnail for Lecture 17(1): Eliminating the RHP zero: Using a zero-cancelling series resistor

Lecture 17(1): Eliminating the RHP zero: Using a zero-cancelling series resistor

Thumbnail for Lecture 18: Feedforward compensated two-stage OTA; Feedforward vs. Miller compensation: comparison

Lecture 18: Feedforward compensated two-stage OTA; Feedforward vs. Miller compensation: comparison

Thumbnail for Lecture 19: Look-up table-based design of analog circuits (gm/Id design) Example design in Spectre

Lecture 19: Look-up table-based design of analog circuits (gm/Id design) Example design in Spectre

Thumbnail for Lecture 20(1): Recap: diff-amp, cascode; finding pole location by inspection; Frequency compensation

Lecture 20(1): Recap: diff-amp, cascode; finding pole location by inspection; Frequency compensation

Thumbnail for Lecture 20(2): 3-stage OTA; Nested Miller & Feedforward compensation; Effect of gate cap in res. F/B

Lecture 20(2): 3-stage OTA; Nested Miller & Feedforward compensation; Effect of gate cap in res. F/B

Thumbnail for Lecture 20(3): 2-stage Miller OTA in unity feedback; Positive or negative feedback?

Lecture 20(3): 2-stage Miller OTA in unity feedback; Positive or negative feedback?

Thumbnail for Lecture 21(1): Differential signaling; Pow. supply rej. ratio PSRR; Pseudo & fully differential ckts

Lecture 21(1): Differential signaling; Pow. supply rej. ratio PSRR; Pseudo & fully differential ckts

Thumbnail for Lecture 21(2): Need for common-mode feedback in fully-differential OTAs

Lecture 21(2): Need for common-mode feedback in fully-differential OTAs

Thumbnail for Lecture 22: Common-mode feedback (CMFB) variants: Resistive common-mode detector with & without OTA

Lecture 22: Common-mode feedback (CMFB) variants: Resistive common-mode detector with & without OTA

Thumbnail for Lecture 23(1): CMFB variants(2) Source follower to buffer resistive CMD; Using a MOS-based CMD

Lecture 23(1): CMFB variants(2) Source follower to buffer resistive CMD; Using a MOS-based CMD

Thumbnail for Lecture 23(2): CMFB variants(3): Tuning nMOS current: Replica bias & current bleeding

Lecture 23(2): CMFB variants(3): Tuning nMOS current: Replica bias & current bleeding

Thumbnail for Lecture 23(3): Fully-differential two-stage Miller compensted OTA with CMFB; Choice for CMFBs

Lecture 23(3): Fully-differential two-stage Miller compensted OTA with CMFB; Choice for CMFBs

Thumbnail for Lecture 24(1): Two-stage fully-differential Miller OTA (recap)

Lecture 24(1): Two-stage fully-differential Miller OTA (recap)

Thumbnail for Lecture 24(2): Common-mode rejection by CMFB; Speed of CMFB; Effect of CMFB on CM output resistance

Lecture 24(2): Common-mode rejection by CMFB; Speed of CMFB; Effect of CMFB on CM output resistance

Thumbnail for Lecture 24(3): Two-stage fully differential current-reuse feedforward OTA with CMFB

Lecture 24(3): Two-stage fully differential current-reuse feedforward OTA with CMFB

Thumbnail for Lecture 25: Output impedance due to CMFB; Inductive output impedance due to negative feedback

Lecture 25: Output impedance due to CMFB; Inductive output impedance due to negative feedback

Thumbnail for Lecture 26(1): Resistors and capacitors on ICs; Random mismatch; Process variations; Pelgrom's law

Lecture 26(1): Resistors and capacitors on ICs; Random mismatch; Process variations; Pelgrom's law

Thumbnail for Lecture 26(2): Mismatch in current mirror

Lecture 26(2): Mismatch in current mirror

Thumbnail for Lecture 27: Noise resistors & MOSFETs; Input ref. noise voltage & current in a linear 2-port network

Lecture 27: Noise resistors & MOSFETs; Input ref. noise voltage & current in a linear 2-port network

Thumbnail for Lecture 28: Input referred noise calculation examples

Lecture 28: Input referred noise calculation examples

Thumbnail for Lecture 29: Input referred noise and offset in five-transistor OTA and telescopic cascode

Lecture 29: Input referred noise and offset in five-transistor OTA and telescopic cascode

Thumbnail for Lecture 30: Noise in multi-stage & fully diff OTA; Impedance scaling for noise; Noise-power tradeoff

Lecture 30: Noise in multi-stage & fully diff OTA; Impedance scaling for noise; Noise-power tradeoff

Thumbnail for Lecture 31: Non-linearity: distortion in fully-diff. ckts; source degeneration for linearizing gm

Lecture 31: Non-linearity: distortion in fully-diff. ckts; source degeneration for linearizing gm

Thumbnail for Lecture 32(1): Improving linearity using negative feedback; pre-distortion in negative feedback

Lecture 32(1): Improving linearity using negative feedback; pre-distortion in negative feedback

Thumbnail for Lecture 32(2): The method of current injection for calculating weak non-linearities

Lecture 32(2): The method of current injection for calculating weak non-linearities

Thumbnail for Lecture 33(2): Rail-to-rail input common-mode opamp; Gm equalization

Lecture 33(2): Rail-to-rail input common-mode opamp; Gm equalization

Thumbnail for Lecture 33(1): Class-AB output stage; Class-AB bias using a) Monti-Celli scheme, b) pseudo resistor

Lecture 33(1): Class-AB output stage; Class-AB bias using a) Monti-Celli scheme, b) pseudo resistor

Thumbnail for Lecture 34: Bandgap reference

Lecture 34: Bandgap reference

Thumbnail for Lecture 35: Self-biased bandgap reference; positive vs. negative feedback; Fractional bandgap ref.

Lecture 35: Self-biased bandgap reference; positive vs. negative feedback; Fractional bandgap ref.

Thumbnail for Lecture 36(1): Low drop-out (LDO) regulators: a brief introduction

Lecture 36(1): Low drop-out (LDO) regulators: a brief introduction

Thumbnail for Lecture 36(2): Deriving flipped voltage follower & super source follower: How to study analog ckts?

Lecture 36(2): Deriving flipped voltage follower & super source follower: How to study analog ckts?

Thumbnail for Lecture 37: Constant-gm biasing: Deriving its multiple variants; Stability of constant-gm bias ckts.

Lecture 37: Constant-gm biasing: Deriving its multiple variants; Stability of constant-gm bias ckts.

Thumbnail for Lecture 38: Introduction to analog layout techniques & conclusion

Lecture 38: Introduction to analog layout techniques & conclusion