PI2EQX4401ZFE

Signal Buffers, Repeaters, Splitters Overview

The PI2EQX4401ZFE is a low-power, PCI Express compliant signal re-driver manufactured by Diodes Incorporated. It supports one high-speed PCI Express lane operating at 2.5Gbps. The device features adjustable transmitter de-emphasis and amplitude, as well as adjustable receiver equalization, controlled via four selection bits to optimize performance across various physical mediums. It includes an integrated spread spectrum reference clock buffer with differential CML I/Os. The unit operates on a 1.8V ±0.1V supply voltage, consumes approximately 100mW per channel in normal mode, and utilizes a 36-pad TQFN (ZF36) package.

Signal Buffers, Repeaters, Splitters Feature Summary

• Programmable equalization and de-emphasis for signal integrity optimization
• Integrated spread spectrum reference clock buffer
• Low power standby mode for power management
• 100 Ω differential CML input and output interfaces

Signal Buffers, Repeaters, Splitters Applications

• PCI Express signal repeater applications
• Backplane signal extension
• Distant data pathway signal conditioning

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the component status before procurement as it may be subject to end-of-life notices or discontinuation. Confirm that the ZF suffix corresponds to the specific 36-pad TQFN packaging required for your design. Ensure compatibility with the 1.8V supply voltage and check for any specific environmental compliance requirements such as RoHS standards prior to finalizing orders.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when a single-lane PCI Express signal needs regeneration over lossy media. It is suitable for designs requiring adjustable signal conditioning parameters to mitigate inter-symbol interference. Consider the 36-pad TQFN footprint and the requirement for external resistors for current setting and configuration pin pull-ups during the schematic capture phase.

Signal Buffers, Repeaters, Splitters Part Context

This part belongs to the Pericom Semiconductor product line, now under Diodes Incorporated. It is designed specifically for serial PCI Express applications, functioning as a repeater and equalizer. The device integrates both data path conditioning and clock buffering capabilities into a single compact package, simplifying the system architecture for high-speed digital interfaces.

Signal Buffers, Repeaters, Splitters Replacement Considerations

Check for direct replacements within the PI2EQX series or other Pericom/Diodes Incorporated signal conditioners. Verify pin-to-pin compatibility and electrical parameter alignment if substituting with similar devices from other manufacturers.

Signal Buffers, Repeaters, Splitters FAQ

How is the standby mode activated?

Standby mode is activated by driving the EN_ pin to a LVCMOS low state, which places the device in a low power down state.

What is the function of the SEL pins?

The SEL pins (SEL_A and SEL_B) are used to configure the equalizer, amplifier, and de-emphasis settings via internal pull-up resistors and external logic levels.

Does the device include a clock buffer?

Yes, the PI2EQX4401 includes an integrated spread spectrum reference clock buffer with differential inputs and outputs.