PI3UPI1608ZXCEX

Signal Buffers, Repeaters, Splitters Overview

The PI3UPI1608ZXCEX is an 8-channel linear ReDriver supporting data rates up to 16Gbps for PCIe Gen1 through Gen4 and UPI applications. It operates on a single 3.3V supply with typical per-channel power dissipation of 220mW at a 1200mVpp output swing. The device integrates 0.22uF coupling capacitors at Rx inputs and Tx outputs. Key parameters include selectable receiver equalization, output swing, and flat gain adjustments. Control is configurable via pin-strap or I2C interfaces, supporting up to four slave devices with 3-bit addressing.

Signal Buffers, Repeaters, Splitters Feature Summary

• Protocol-agnostic linear signal conditioning with integrated CTLE gain compensation to optimize eye opening and reduce jitter.
• On-chip 0.22uF coupling capacitors eliminate external components at both input and output ports.
• Per-channel programmable settings for receiver equalization, output swing, and flat gain.
• Flexible control architecture allowing selection between pin-mode latching and I2C programming.

Signal Buffers, Repeaters, Splitters Applications

• PCIe Gen1 to Gen4 interconnects
• UPI (Universal Phased Interface) links
• High-speed server backplanes
• Storage expansion cards

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific ordering suffix against manufacturer documentation before procurement. The 'E' designation confirms lead-free and green status, while 'X' indicates tape and reel packaging. Confirm RoHS compliance requirements align with project specifications. Ensure I2C address configurations match system constraints during design validation.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component for designs requiring protocol-transparent signal regeneration up to 16Gbps. The integrated coupling capacitors simplify PCB layout compared to discrete solutions. Evaluate channel count requirements as the device provides exactly eight differential channels. Consider the 3.3V single-supply constraint and verify thermal management for the specified power dissipation levels.

Signal Buffers, Repeaters, Splitters Part Context

This part belongs to Diodes Incorporated's ReDriver family of high-speed signal conditioners. The ZXCEX suffix denotes the ZXC package code, which is an 116-contact aQFN measuring 7x13.5mm. This form factor supports dense board layouts typical in modern computing infrastructure.

Signal Buffers, Repeaters, Splitters Replacement Considerations

Consult official substitution lists for verified alternatives. Generic interface ICs may lack the specific integrated coupling capacitor topology or exact 16Gbps linear equalization characteristics required for PCIe 4.0 compliance.

Signal Buffers, Repeaters, Splitters FAQ

Does the PI3UPI1608 support protocols other than PCIe?

Yes, the device is protocol-agnostic and transparent to system link training, making it suitable for UPI and other high-speed serial interfaces.

How are the internal coupling capacitors configured?

The device includes integrated 0.22uF coupling capacitors at both the receiver inputs and transmitter outputs to simplify routing.

What control methods are available for configuration?

Users can select either pin-mode control, where values are latched to registers, or I2C programming for dynamic adjustment.