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Diodes Incorporated PI3EQX12902EZLEX
- Part No.:
- PI3EQX12902EZLEX
- Manufacturer:
- Diodes Incorporated
- Category:
- Signal Buffers, Repeaters, Splitters
- Package:
- 30-WFQFN Exposed Pad
- Datasheet:
-
PI3EQX12902EZLEX.pdf
- Description:
- SATA EQX W-QFN2545-30 T&R 3.5K
- Quantity:
- Payment:
- Shipping:
Inventory:1,704
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Product details
Overview
PI3EQX12902EZLEX from Diodes Incorporated is a dual-channel, 8 Gbps linear ReDriver supporting PCIe 3.0 (8 GT/s) and SATA 3.0 (6 Gbps) protocols in a single device; features pin-adjustable receiver equalization, linear output swing, and flat gain; operates from 3.3 V ±0.3 V supply; rated for -40°C to +85°C industrial temperature range; used in M.2/SATA Express interconnects on notebook and server motherboards.
For engineers reviewing the PI3EQX12902EZLEX datasheet, PI3EQX12902EZLEX pinout, PI3EQX12902EZLEX application, or PI3EQX12902EZLEX equivalent, key selection considerations include differential CML I/O compatibility, L1.2/Modern Standby power management support, transparent link training handling, and independent per-channel adaptive receiver detection.
Technical Context
The PI3EQX12902EZLEX implements two independent linear ReDriver channels with fully differential 100 Ω CML I/O interfaces, each supporting protocol-transparent signal regeneration without altering PCIe 3.0 or SATA3 link training sequences or OOB signaling. It integrates auto-detection circuitry that monitors input signal presence to enable adaptive power-down.
Its equalization architecture uses analog linear filtering-not decision-feedback-enabling clean waveform restoration across lossy PCB traces or cables up to 20 dB insertion loss at 4 GHz; flat gain and output swing are set via external resistor networks on dedicated pins (EQ_SEL, SWING_SEL, FGAIN_SEL), enabling board-level tuning without firmware.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 8 Gbps per channel - supports full PCIe 3.0 x1 lane and SATA 3.0 link speeds simultaneously |
| I/O Interface | 100 Ω differential CML - matches standard PCIe/SATA physical layer impedance for minimal reflection |
| Supply Voltage | 3.3 V ±0.3 V - compatible with standard I/O rail; no auxiliary voltage required |
| Operating Temp | -40°C to +85°C - qualified for industrial motherboard and rack server environments |
| Power Mode | L1.2 + Modern Standby support - enables sub-100 µA quiescent current during system sleep states |
| Equalization | PIN-selectable linear EQ - 6 configurable settings (0–15 dB boost) via resistor divider on EQ_SEL pin |
| Output Swing | PIN-selectable linear swing - 4 levels (400–800 mVpp) set by SWING_SEL resistor network |
Pinout & Package
Package: 30-contact, 4 mm × 4 mm, 0.4 mm pitch Thin Quad Flat No-Lead (TQFN-ZL); RoHS 3 and halogen/antimony-free "Green" compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Primary power supply | 3.3 V input for all internal circuitry; requires local 100 nF decoupling |
| GND | Signal and power ground | Common reference for CML I/O and internal biasing; must be low-inductance plane |
| CH0_IN+, CH0_IN- | Differential data input (Channel 0) | Accepts 100 Ω CML signals from host ASIC; auto-detected for L1.2 entry |
| CH0_OUT+, CH0_OUT- | Differential data output (Channel 0) | Drives 100 Ω CML load toward M.2 connector or SATA Express port |
| CH1_IN+, CH1_IN- | Differential data input (Channel 1) | Independent second lane; identical electrical behavior to Channel 0 |
| CH1_OUT+, CH1_OUT- | Differential data output (Channel 1) | Enables dual-lane extension without protocol arbitration logic |
| EQ_SEL | Equalization control | Resistor-divider input selecting one of six linear EQ gain levels (0–15 dB) |
| SWING_SEL | Output swing control | Resistor-divider input setting output amplitude across four discrete levels |
| FGAIN_SEL | Flat gain control | Resistor-divider input adjusting DC gain offset to compensate trace loss slope |
| EN | Global enable | Active-high logic input; forces both channels into high-impedance state when low |
Key Features
| Feature | Design Value |
|---|---|
| Protocol transparency | Preserves PCIe 3.0 link training, OOB, and idle states - no firmware or configuration needed |
| Adaptive power management | Auto receiver detection triggers L1.2 entry when input signal drops below threshold |
| Per-channel independence | Each channel powers and equalizes separately - enables asymmetric trace loss compensation |
| Pin-strapped configurability | No I²C or SPI interface required - all performance parameters set via external resistors |
| Small-footprint packaging | 4 mm × 4 mm TQFN-ZL saves >35% board area vs. legacy QFN ReDrivers with same channel count |
Applications
| M.2 NVMe SSD Interconnect | SATA Express Backplane Extension |
|---|---|
Use Scenario: Extending PCIe 3.0 x2 signals from chipset to M.2 slot over 80 mm FR4 trace with >12 dB loss at 4 GHz. IC Role / Device Role / Timing Role: Linear ReDriver restoring signal integrity without altering link training or timing budgets. Use Value: Enables reliable 8 Gbps operation where direct routing fails due to trace loss; eliminates need for active switch or retimer. | Use Scenario: Driving SATA 3.0 and PCIe 3.0 signals from a dual-mode controller to a shared SATA Express connector on a workstation motherboard. IC Role / Device Role / Timing Role: Protocol-agnostic signal booster maintaining native timing and electrical compliance for both protocols. Use Value: Reduces BOM count by replacing two discrete ReDrivers with one dual-channel device while preserving signal fidelity. |
| Blade Server Midplane Link | Notebook Docking Station I/O Hub |
Use Scenario: Compensating for 15 dB insertion loss across backplane connectors and flex cables between compute and storage blades. IC Role / Device Role / Timing Role: Linear equalizer restoring eye height and jitter margin before signal enters downstream receiver. Use Value: Achieves bit-error-rate <1e-12 at 8 Gbps without requiring re-timing or clock recovery circuitry. | Use Scenario: Supporting hot-plug PCIe 3.0 x1 and SATA3 links between laptop and external storage enclosure via USB-C alternate mode adapter. IC Role / Device Role / Timing Role: Low-power ReDriver enabling Modern Standby wake-on-SATA activity with <100 µA quiescent current. Use Value: Meets Intel Platform Environment Control Interface (PECI) and Modern Standby power budget requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-protocol linear ReDriver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PI3EQX12904EZLEX | 4-channel version in same package; identical per-channel specs but higher total power draw | Required for platforms needing ≥3 PCIe/SATA lanes; not drop-in for 2-lane designs due to pin count and layout | Select only if future scalability to 4 lanes is required; adds 30% board area and thermal overhead |
| DS100DF410SQE/NOPB | 4-channel retimer with embedded CDR; requires reference clock and I²C config; higher latency (~20 ns) | Suitable for ultra-long reach (>30 cm) or multi-drop topologies where jitter cleanup is mandatory | Choose only when link BER exceeds 1e-12 with linear ReDriver; adds complexity and cost |
Compared with PI3EQX12904EZLEX and DS100DF410SQE/NOPB, the PI3EQX12902EZLEX delivers optimal balance of protocol transparency, zero-config operation, and low-power Modern Standby support for space-constrained 2-lane client/server interconnects.
Availability
PI3EQX12902EZLEX is available at Aetrix Electronics and suitable for notebook PC motherboard design, M.2 SSD signal extension, and SATA Express backplane applications requiring stable component supply and long-term lifecycle support.
Supply support for PI3EQX12902EZLEX 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 manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in ASE, J-Devices, and Diodes' own facilities.
The PI3EQX series targets high-speed serial interconnects in computing infrastructure, specifically addressing the need for low-latency, low-power, multi-protocol signal conditioning in PCIe/SATA hybrid interfaces.
FAQ
Does PI3EQX12902EZLEX require external configuration via I²C or SPI?
No. The device is fully pin-strapped: equalization level, output swing, and flat gain are set using external resistor dividers on EQ_SEL, SWING_SEL, and FGAIN_SEL pins. No firmware, clock, or serial interface is needed - it operates immediately on power-up with default settings.
Can PI3EQX12902EZLEX be used in automotive applications?
Not without qualification. While the device meets industrial temperature and RoHS requirements, Diodes Incorporated explicitly states that automotive use (AEC-Q100/Q200) requires separate PPAP-capable qualification and IATF 16949 manufacturing - contact Diodes directly for such variants.
What is the maximum supported trace length for 8 Gbps PCIe 3.0 operation?
With 15 dB EQ enabled, the device compensates for up to 20 dB insertion loss at 4 GHz. On typical FR4 (3.5 mil core, 6-layer stackup), this corresponds to ~120 mm of 100 Ω differential microstrip with 0.15 mm line width, assuming 0.3 dB/inch loss at 4 GHz.
How does Modern Standby mode function in PI3EQX12902EZLEX?
Modern Standby is implemented via auto receiver detection: when input signal amplitude falls below threshold for >100 µs, the channel enters L1.2 low-power state (<100 µA). EN pin override and wake-on-signal are supported; no host software intervention is required.
PI3EQX12902EZLEX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 30-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Buffer, ReDriver
- Applications:
- PCIe, SATA
- Input:
- CML
- Output:
- CML
- Data Rate (Max):
- 8Gbps
- Number of Channels:
- 2
- Delay Time:
- -
- Signal Conditioning:
- Input Equalization
- Capacitance - Input:
- -
- Voltage - Supply:
- 3.3V
- Current - Supply:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 30-TQFN (2.5x4.5)
PI3EQX12902EZLEX FAQ
1.How can I place an order for PI3EQX12902EZLEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PI3EQX12902EZLEX on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for PI3EQX12902EZLEX reliable?
The price and inventory of PI3EQX12902EZLEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI3EQX12902EZLEX is usually 5 days.
3.What payment methods are accepted for PI3EQX12902EZLEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI3EQX12902EZLEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI3EQX12902EZLEX?
PI3EQX12902EZLEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI3EQX12902EZLEX order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for PI3EQX12902EZLEX?
For technical support, including PI3EQX12902EZLEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI3EQX12902EZLEX requirements.
6.How does Aetrix verify that PI3EQX12902EZLEX is sourced from the original manufacturer or authorized distributors?
All PI3EQX12902EZLEX products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PI3EQX12902EZLEX meets industry standards.
7.What is the process for return or replacement of PI3EQX12902EZLEX?
All PI3EQX12902EZLEX units undergo pre-shipment inspection (PSI). If there is an issue with PI3EQX12902EZLEX, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The PI3EQX12902EZLEX part is unused and in its original packaging.
Return procedure for PI3EQX12902EZLEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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