shieldlayout - Adaptive Integrated Microsystems Shielding...

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Adaptive Integrated Microsystems Shielding in Mixed-signal Layout
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Adaptive Integrated Microsystems Mixed-signal Layout Current system-on-chip designs have analog and digital circuits on the same substrate. Digital lines are noisy due to random switching behavior.
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Adaptive Integrated Microsystems Coupling Noise Noise due to capacitive coupling from digital lines. Substrate coupling
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Adaptive Integrated Microsystems Universal shielding methods Separate noisy lines from sensitive lines. Use bypass capacitors to filter out high frequency components. Use inductors to connect analog and digital grounds (Inductors are ac blocks). Use differential signals rather than single ended signals. External noise appear as common mode disturbance.
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Adaptive Integrated Microsystems Shielding with Guard Rings N-well Capacitor Bank Guard Ring Connect to constant voltage source Reduces noise due to substrate coupling.
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Unformatted text preview: Adaptive Integrated Microsystems Shielding with faraday cage Shield a sensitive line using surrounding metal layers. Vertical and horizontal shielding. Adaptive Integrated Microsystems Floor planning and symmetry Separate analog and digital lines as much as possible. Separate the design into analog and digital parts and shield the analog part using guard rings. Use least active digital pins between analog and digital pins. Make the design as symmetric as possible. Separate analog Vdd and digital Vdd. Adaptive Integrated Microsystems Sample mixed-signal layout and design Adaptive Integrated Microsystems ANALOG INTEGRATED CIRCUIT DESIGN FLOW Adaptive Integrated Microsystems Adaptive Integrated Microsystems Adaptive Integrated Microsystems Adaptive Integrated Microsystems Adaptive Integrated Microsystems Adaptive Integrated Microsystems...
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shieldlayout - Adaptive Integrated Microsystems Shielding...

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