OPS Connector Pin Layout for Crosstalk Isolation
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Solution Overview
Problem
The small size and close spacing of pins in connectors for electronic devices cause crosstalk and signal integrity issues, leading to false triggering and system failures.
Innovation Solution
A connector design that multiplexes second pins for grounding and signal transmission, reducing the number of grounding pins and arranging them on both sides of first pins to isolate ground, thereby reducing crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the number of grounding pins is reduced by multiplexing second pins, then production cost is reduced, but signal isolation and crosstalk prevention may be compromised
Solution Approach 1:
The second pins are designed to serve dual functions: transmitting low-speed second signals (such as control signals or data signals) and providing ground isolation for high-speed first signals. This multi-functionality reduces the total number of pins required, thereby reducing production cost while maintaining signal isolation through the grounding capability of the second pins.
Solution Approach 2:
The second pins act as intermediary elements between the first pins transmitting high-speed signals. By positioning the second pins (configured for grounding or low-speed signals) between adjacent pairs of first pins, they serve as mediators that provide electromagnetic shielding and ground reference, thereby reducing crosstalk between high-speed differential signal pairs.
2Volume of moving object
If pins are placed closer together to reduce connector size, then connector compactness is improved, but crosstalk between adjacent pins increases
Solution Approach 1:
The second pins are positioned between adjacent pairs of first pins to serve as intermediary shielding elements. Even in compact arrangements where pins are closely spaced, the second pins (when configured for grounding) create electromagnetic barriers that reduce mutual inductance and capacitance between adjacent high-speed signal pairs, thereby mitigating crosstalk in the compact connector structure.
Solution Approach 2:
The connector employs differential signaling for high-speed first signals, where adjacent pins form balanced pairs with controlled impedance. The second pins provide localized ground references and shielding specifically at critical locations between signal pairs, creating local quality improvements in electromagnetic isolation without requiring overall increases in connector size.
Data Source
AI summary
Embodiments of the present disclosure provide a connector, an electronic device and an open pluggable specification (OPS) device. The connector includes a plurality of first pins and a plurality of second pins. A pair of adjacent first pins are configured to transmit a first signal. The plurality of the second pins are arranged on both sides of the pair of the first pins. The plurality of the second pins are configured to be grounded or transmit a second signal. A transmission rate of the first signal is greater than that of the second signal.