Analog Design and Layout

This one-day seminar covers methods and techniques to minimize the susceptibility of low level analog circuits. Printed circuit board layout, power distribution, power supply bypassing, and grounding are covered. Shielding, guarding, non-linear effects, and resonance effects are also discussed. Emphasis is on increasing the immunity of low frequency, low level analog circuits in order to protect them from both internal and external sources of noise. High frequency analog circuit grounding and layout are also covered.

Outline

LAYOUT, GROUNDING, & POWER DISTRIBUTION

Analog Circuit Noise Problems
Power Distribution System Requirements
Power Supply Decoupling
Paralleling Capacitors
Operational Amplifier Considerations
Analog Grounding and Layout
Ground Loops

BALANCING, SHIELDING, & GUARDING

Balancing
Instability and Oscillation
Capacitive Loading of Amplifiers
Split Ground/Power Planes
Ground Plane Current Flow
Grounding of Mixed Signal Systems
Power Filtering
Instrumentation Amplifiers
Amplifier - Source Configurations
Amplifier and Cable Shield Grounding
Guard Shields
Shield Terminations

HIGH FREQUENCY ANALOG CIRCUIT LAYOUT

High-Frequency Layout Considerations
Ground Planes

NONLINEAR & RESONANCE EFFECTS

Audio Rectification
Parasitic Resonance
Example

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Henry Ott Consultants

48 Baker Road Livingston, NJ 07039

Phone: 973-992-1793, FAX: 973-533-1442

e-mail: h.ott@att.net

May 9, 2002