Diodes Incorporated PI3EQX1002B1ZLEX

Overview

PI3EQX1002B1ZLEX from Diodes Incorporated is a 10.0 Gbps dual-channel linear ReDriver™ IC designed for USB 3.1 Gen-2 protocol extension, featuring programmable equalization (up to 14.6 dB at 5 GHz), flat gain (−1.6 to +2.7 dB), and output swing (800–1200 mVppd), operating on a single 3.3 V supply with automatic receiver detection and adaptive slumber mode for power-sensitive notebooks and docking stations.

For engineers reviewing the PI3EQX1002B1ZLEX datasheet, PI3EQX1002B1ZLEX pinout, PI3EQX1002B1ZLEX application, or PI3EQX1002B1ZLEX equivalent, this device supports high-fidelity signal integrity restoration across PCB traces, cables, and connectors in USB 3.1 host/device interconnects - with real-time channel-level power state management, CML I/O compatibility, and industrial temperature operation (−40°C to +85°C).

Technical Context

The PI3EQX1002B1 implements independent linear equalization per channel using analog DC-coupled compensation, supporting four discrete EQ settings (0/R/F/1) with frequency-dependent peaking gain up to 14.6 dB at 5 GHz. Each channel features fully autonomous input-level detection that triggers mode transitions between Active, Slumber (16–19 mA), Deep Slumber (0.4–0.6 mA), Unplug (0.3–0.45 mA), and Power-Down (<50 µA).

Its control architecture uses three 4-level pins per channel (EQA/B, FGA/B, SWA/B) with internal resistor dividers enabling hardware-selectable configuration without I²C or firmware. The integrated RXDET_EN and EN pins provide external enable/disable of receiver detection and full channel shutdown, while CML I/Os maintain 100 Ω differential impedance and support AC-coupled termination options including 50 Ω to VDD, 6 kΩ to VbiasTx, or Hi-Z.

Key Specifications

Pinout & Package

Package: 30-pin TQFN (2.5 mm × 4.5 mm, ZL30 footprint), thermally enhanced with exposed center pad requiring ≥3 thermal vias to GND plane.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB 3.1 linear redriver applications.

Compared with TI TUSB211IRWBR and Renesas uPD720210, the PI3EQX1002B1ZLEX delivers true 10 Gbps Gen-2 performance with hardware-tunable EQ/FG/SW, autonomous per-channel power states, and minimal integration overhead - making it uniquely suited for low-latency, low-power, and layout-constrained USB 3.1 interconnects.

Availability

PI3EQX1002B1ZLEX is available at Aetrix Electronics and suitable for USB 3.1 docking stations, high-density notebook expansion modules, and external SSD enclosures requiring stable component supply, consistent lead-time visibility, and long-term lifecycle support.

Supply support for PI3EQX1002B1ZLEX includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal ICs, with design centers across Asia, Europe, and the U.S., serving industrial, computing, consumer, and communications markets.

The PI3EQX1002B1 belongs to Diodes' Pericom-branded high-speed interface portfolio, engineered specifically for USB, PCIe, and DisplayPort signal integrity enhancement in space- and power-constrained platforms.

FAQ

What is the function of the RXDET_EN pin?

RXDET_EN is an active-high enable input for the automatic receiver detection loop. When asserted (logic high), the device monitors input channels for LFPS patterns to detect attached loads; when deasserted (logic low), detection is disabled and the channel remains in its current power state. Internal 300 kΩ pull-up ensures default enable unless externally pulled low.

Can EQA and EQB be configured independently?

Yes - EQA controls Channel A equalization and EQB controls Channel B, with no coupling between them. Each accepts four distinct configurations (0/R/F/1) via external resistor ties or open-circuit, allowing asymmetric compensation for mismatched trace lengths or loss profiles in dual-lane USB 3.1 links.

What is the minimum input signal level required to exit Slumber Mode?

A minimum differential input amplitude of 45 mVppd (typical) at the AIP/AIN or BIP/BIN terminals is required to trigger wake-up from Slumber Mode. This threshold is defined by Vth_am in the datasheet and applies independently per channel when RXDET_EN is enabled.

Does the PI3EQX1002B1ZLEX support AC-coupled inputs and outputs?

Yes - both inputs (AIP/AIN, BIP/BIN) and outputs (AOP/AON, BOP/BON) are designed for AC-coupled operation with 75–265 nF recommended coupling capacitance. Input termination options include 50 Ω to VDD, 67 kΩ to VbiasRx/GND; output options include 50 Ω to VDD, 6 kΩ to VbiasTx, or Hi-Z.