DS50PCI402SQ/NOPB

Overview

The DS50PCI402SQ/NOPB is a dual-channel equalizer manufactured by Texas Instruments, designed for high-speed serial data transmission applications. It operates within a supply voltage range of 3.0 V to 3.6 V and supports data rates up to 10.3 Gb/s per channel. The device features adjustable gain and peaking controls to compensate for signal loss in printed circuit board traces. It is housed in a 48-pin WQFN package with a thermal pad, suitable for surface-mount assembly. The component functions as a linear repeater or redriver to restore signal integrity in backplane and front-panel interconnects.

Feature Summary

• Dual-channel architecture providing independent equalization for two high-speed differential signals
• Adjustable gain and peaking settings to optimize signal quality across varying trace lengths
• Integrated power-down mode for reduced energy consumption during idle periods
• Supports standard LVDS signaling levels for compatibility with common interface standards

Applications

• Backplane interconnects in telecommunications equipment
• Front-panel cable extensions for high-speed data links
• Storage area network (SAN) infrastructure components
• High-performance computing system interconnects

Procurement Notes

Verify the specific suffix 'SQ' against the manufacturer's official documentation to confirm temperature rating and packaging details. Ensure that the NOPB designation indicates lead-free compliance and RoHS adherence as specified in the latest datasheet revision. Cross-reference the part number with authorized distributors to confirm current availability and authenticity before procurement.

Selection Notes

Select this component when dual-channel equalization is required for signals operating near 10.3 Gb/s. Consider the WQFN-48 package constraints regarding thermal dissipation and PCB layout space. Evaluate the need for external passive components if additional filtering or termination is required beyond the internal capabilities. Compare performance metrics against single-channel alternatives if only one link requires compensation.

Part Context

This device belongs to the DS50PCI40x series of equalizers from Texas Instruments, which are engineered for PCI Express and other high-speed serial interfaces. The series includes variants like the DS50PCI401, differing primarily in channel count or specific feature sets. These components address signal degradation issues inherent in long copper traces at multi-gigabit data rates.

Replacement Considerations

The DS50PCI401SQ/NOPB may serve as a functional alternative if only a single channel is required, offering similar electrical characteristics in a comparable package. Verify pin-to-pin compatibility and control register configurations before substitution. No other direct public substitutes are confirmed in the provided reference material.