**Analogue
Design **

__Introduction__

This web site is a collection of papers on analog design. It's an ongoing work, so please check back from time to time to find out if there have been any additions.

There are several papers that address some pretty blatant misconceptions and, quite frankly, fundamentally main stream false notions on various technologies and theory.

__Tutorial Papers__

Bipolar Design Part 1 - The Basics

Bipolar Design Part 2 - Distortion

Bipolar Design Part 3 - Biasing

Current Feedback Myth - Voltage feedback amplifiers can be just as fast as current feedback amplifiers

CMOS Bandgap - Low noise, On point trim, high accuracy bandgap with no chopper.

Distortion With Feedback - More generalized than standard treatments, but a very simple approach

Feedback Stability - The only guaranteed way to make a small fortune, is to start with a large one, then lose some of it

LNA - Improved 10 GHz, R.F., Low Noise Amplifier Design Example

Noise Shaping - Noise shaping is error correction, the shaping bit is just what comes out of the wash

Operational Amplifier Design 1 - Deep sub-micron 1V, 45nm, 90dB, 100MHz, 0.35ma, two stage operational amplifier design example

Operational Amplifier Design 2 - Miller compensation is not vastly inferior than cascode compensation, contrary to the standard literature

Oscillator Loop Gain - Common Emitter and Emitter follower oscillators are, essentially, identical

Phase Noise - The standard ISF Hajimiri-Lee approach is fundamentally incorrect

Proportional To Temperature
Current Generator - How to *reliably* design a start-up circuit

Delta-Sigma ADC - The standard voltage mode description of noise shaping is fundamentally incorrect

Voltage Controlled Bipolar Transistor - Typical descriptions that the bipolar transistor is "current controlled" are fundamentally incorrect

__General Design Techniques__

__Theoretical Papers__

Power - Accuracy - Frequency Limit (PAFL) of CMOS Amplifiers

Power - Accuracy - Frequency Limit (PAFL) of Bipolar Amplifiers

Widlar Current Source - Closed Form Solution

__Spice Related Papers__

XSpice Cored Transformers, Inductors and Tables

**Miscellaneous Schematics**

__Misc__

L'Hôpital's Rule derivation

__PDF Versions__

1v45nmopamp.pdf

bipolardesign1.pdf

bipolardesign2.pdf

bipolardesign3.pdf

currentfeedbackmyth.pdf

DistortionFeedback.pdf
diff_osc.pdf

feedbackstability.pdf

FlickerNullification.pdf

laplace.pdf

lna.pdf

LTV.pdf

noise_shaping.pdf

opamp_miller.pdf

osc_loop_gain.pdf

oversampling.pdf

OrthogonalPerturbation.pdf

PhaseNoiseOscillators.pdf

PhaseNoiseTutorial.pdf

PTAT.pdf

SigmaDelta.pdf

voltagecontrolledbipolar.pdf

widlarlambert.pdf

Comments on these papers, as are any corrections, are welcome:

Email: kevinExractAndRemove@kevinaylward.co.uk

Remove ExtractAndRemove

__Links__

© Kevin Aylward 2022

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providing that this source is acknowledged.

Website last modified 30^{th} April 2022