Integrated Circuit Power Wiring for Noise Isolation
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Solution Overview
Problem
Existing integrated circuit devices face challenges in reducing noise interference between digital and analog circuits, leading to increased chip area and decreased layout efficiency, particularly in non-contact power transmission systems where noise transmission can cause malfunctions.
Innovation Solution
The integration of a digital power supply regulation circuit, an analog power supply regulation circuit, and a control logic circuit with a power supply wiring region that separates digital and analog circuits, allowing for increased distance between them and efficient power supply line connections, thereby reducing noise interference and enhancing layout efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the distance between the digital circuit and the analog circuit is increased to reduce noise interference, then the noise interference is reduced, but the area of the integrated circuit device increases
Solution Approach 1:
The integrated circuit device is divided into distinct digital circuit region and analog circuit region, with each region independently laid out and connected through dedicated power supply wiring regions. This segmentation allows noise reduction without requiring excessive distance between circuits.
Solution Approach 2:
The patent introduces a third dimension by creating separate wiring regions for digital power supply lines and analog power supply lines that extend in directions perpendicular to the main circuit layout. This dimensional approach allows power supply lines to connect circuits without crossing through each other's regions, reducing noise coupling while maintaining compact area.
2Object-affected harmful factors
If the distance between the digital circuit and the analog circuit is increased to reduce noise transmission, then the noise transmission is reduced, but the layout efficiency decreases
Solution Approach 1:
The circuit is segmented into functional regions (digital circuit region, analog circuit region) with dedicated power supply wiring regions for each. This segmentation enables efficient local connections within regions while isolating noise-sensitive areas, improving both noise reduction and layout efficiency.
Solution Approach 2:
Dedicated power supply wiring regions act as intermediaries between digital and analog circuits. These wiring regions provide controlled pathways for power supply lines, enabling connections without direct signal path interference and improving layout organization.
3Productivity
If digital and analog circuits are integrated in the same region to improve layout efficiency, then layout efficiency increases, but noise interference increases causing potential malfunctions
Solution Approach 1:
The integrated circuit device is divided into distinct digital circuit region and analog circuit region, with each region independently laid out and connected through dedicated power supply wiring regions. This segmentation allows noise reduction without requiring excessive distance between circuits.
Solution Approach 2:
Different regions of the integrated circuit device are assigned different functional qualities: the digital circuit region accommodates noise-generating digital circuits, the analog circuit region houses noise-sensitive analog circuits, and the power supply wiring regions provide controlled electromagnetic environments. This local differentiation ensures reliable analog operation while maintaining high layout efficiency through systematic regional organization.
Data Source
AI summary
An integrated circuit device includes a digital power supply regulation circuit, an analog power supply regulation circuit, a control logic circuit, an analog circuit, and a power supply wiring region. A digital power supply line which supplies a digital power supply voltage and an analog power supply line which supplies an analog power supply voltage are provided in the power supply wiring region. The digital power supply regulation circuit, the analog circuit, and the analog power supply regulation circuit are disposed in a first direction with respect to the control logic circuit. The power supply wiring region is formed along a second direction in a region between the control logic circuit and the digital power supply regulation circuit, the analog circuit, and the analog power supply regulation circuit.