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Texas Instruments DS32EV400SQ/NOPB
- Part No.:
- DS32EV400SQ/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Specialized
- Package:
- 48-WFQFN Exposed Pad
- Datasheet:
-
DS32EV400SQ/NOPB.pdf
- Description:
- IC INTERFACE SPECIALIZED 48WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:136
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Product details
Overview
DS32EV400SQ/NOPB from Texas Instruments is a programmable quad CML equalizer IC for high-speed serial links, delivering up to 14 dB equalization at 3.2 Gbps, 0.12 UI residual deterministic jitter with 40" FR4 traces, and individual channel enable/signal detect functionality. It supports DisplayPort, XAUI, and InfiniBand interfaces in backplane and cable-receiver applications.
For engineers reviewing the DS32EV400SQ/NOPB datasheet, DS32EV400SQ/NOPB pinout, DS32EV400SQ/NOPB application, or DS32EV400SQ/NOPB equivalent, key selection criteria include per-channel SMBus-programmable boost (8 levels), AC/DC-coupled input compatibility, 2.5V/3.3V single-supply operation, low-power standby mode, and 7 mm × 7 mm 48-pin WQFN packaging.
Technical Context
The DS32EV400SQ/NOPB implements four independent CML-based equalization channels, each integrating a limiting amplifier, DC offset correction, and programmable gain control. Its equalization architecture compensates for frequency-dependent loss in FR4 traces and twin-axial cables up to 40 inches at 3.2 Gbps.
Control is implemented via either hardware pins (BST_2:0, FEB, EN_n, SD_n) or SMBus interface (7-bit address 0xAC, registers 0x00–0x08). Signal detect thresholds (SD_ON/SD_OFF) and output amplitude (400–760 mVP-P) are configurable per channel via SMBus, while boost level defaults to pin-strapped mode when FEB is high.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Equalization Range | Up to 14 dB loss compensation at 3.2 Gbps - enables reliable link extension over lossy 40" FR4 or 10 m twin-axial cable. |
| Data Rate Support | DC to 3.2 Gbps - covers DisplayPort 1.1/1.2, XAUI, and InfiniBand DDR/QDR signaling rates. |
| Residual Jitter | 0.12 UIP-P deterministic jitter at 3.2 Gbps - ensures robust eye opening after equalization on long FR4 runs. |
| Supply Voltage | Single 2.5V ±5% or 3.3V ±10% - simplifies power delivery and supports mixed-voltage system integration. |
| Power Consumption | 360–490 mW typical at 2.5V (all channels active) - enables thermal management in dense high-speed interconnect modules. |
| Input Coupling | Supports both AC- and DC-coupled NRZ data paths - accommodates PRBS-31 and 8b/10b encoded signals without external biasing. |
| ESD Rating | 9 kV HBM - meets industrial-grade robustness requirements for board-level handling and field deployment. |
Pinout & Package
DS32EV400SQ/NOPB uses a 7 mm × 7 mm, 48-pin WQFN package with exposed thermal pad (DAP = GND). Pin assignment follows TI's standard layout for high-speed CML I/O and LVCMOS control signals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN_0+ / IN_0− to IN_3+ / IN_3− | CML differential inputs (4 channels) | On-chip 100 Ω differential termination - eliminates need for external resistors in most AC-coupled designs. |
| OUT_0+ / OUT_0− to OUT_3+ / OUT_3− | CML differential outputs (4 channels) | On-chip 50 Ω source termination to VDD - compatible with 50 Ω single-ended PCB routing to downstream receivers. |
| BST_2, BST_1, BST_0 | Equalizer boost select (3-bit) | Selects one of eight global boost levels when FEB = high - sets uniform compensation across all channels. |
| FEB | Boost control mode select | High = pin-strapped boost; Low = SMBus-per-channel boost - enables flexible configuration for heterogeneous channel loss profiles. |
| EN0–EN3 | Per-channel enable inputs | LVCMOS inputs with internal pull-up - allow individual channel power gating to reduce dynamic power in partial-link scenarios. |
| SD0–SD3 | Per-channel signal detect outputs | LVCMOS outputs indicating presence/absence of valid input signal - supports automatic channel activation when tied to ENn. |
| SDA / SDC / CS | SMBus interface pins | 3.3V-tolerant LVCMOS with internal pull-ups - enable register-level control of boost, SD thresholds, and output amplitude without additional level-shifting. |
Key Features
| Feature | Design Value |
|---|---|
| Quad-channel independent equalization | Four fully isolated CML data paths with dedicated enable, signal detect, and SMBus-configurable parameters - enables asymmetric link tuning in multi-lane systems. |
| 8-level programmable boost | Configurable via hardware pins or per-channel SMBus registers - matches equalization strength to trace length, connector loss, or cable type without firmware changes. |
| AC/DC-coupled input support | Valid for long-run PRBS-31 and balanced 8b/10b patterns - eliminates baseline wander and DC drift issues in extended backplane applications. |
| Low-power standby mode | Reduces channel power to ≤30 mW at 2.5V when EN_n = low - cuts total device quiescent power by >90% during link idle periods. |
| Signal detect with programmable thresholds | SD_ON/SD_OFF thresholds adjustable from 30–90 mVP-P via SMBus registers 0x05–0x06 - prevents false detection in noisy high-speed environments. |
Applications
| DisplayPort Source Extension | XAUI Backplane Re-timer |
|---|---|
Use Scenario: Extending DisplayPort 1.2 source output over 40" FR4 PCB traces to drive multiple monitors or docking stations. IC Role / Device Role / Timing Role: Quad equalizer placed between GPU serializer and edge connectors - restores signal integrity degraded by board-level interconnect loss. Use Value: Enables full-bandwidth 4K@60Hz transmission without requiring higher-cost active cables or re-spinning baseboard layout. | Use Scenario: Re-timing XAUI lanes across a 12-slot telecom line card with 24" FR4 backplane routing. IC Role / Device Role / Timing Role: Per-lane CML equalizer and limiting amplifier - compensates deterministic jitter induced by via stubs and impedance discontinuities. Use Value: Achieves <0.2 UI residual jitter at 3.125 Gbps, meeting IEEE 802.3ae XAUI compliance margin for 10G Ethernet switching fabric. |
| InfiniBand QDR Interconnect | Multi-Protocol High-Speed I/O Subsystem |
Use Scenario: Boosting signal integrity in InfiniBand QDR (20 Gbps aggregate) switch ASIC-to-module links using twin-axial cables. IC Role / Device Role / Timing Role: Quad-channel equalizer placed at module receiver side - corrects frequency-dependent attenuation and phase distortion in 24 AWG twin-ax. Use Value: Supports 10 m cable reach at full QDR rate with BER <10−12, eliminating need for custom pre-emphasis on the transmitter ASIC. | Use Scenario: Serving as unified equalization engine for FPGA-based high-speed I/O subsystem supporting DisplayPort, XAUI, and custom protocols. IC Role / Device Role / Timing Role: Configurable quad equalizer with SMBus register access - allows runtime adaptation to different protocol data rates and media types. Use Value: Reduces BOM count and PCB footprint versus discrete equalizers per protocol, while enabling field-upgradable link tuning via host processor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad high-speed equalizer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS100DF410 | Integrated CDR with 4-channel equalization; supports up to 12.5 Gbps; requires external reference clock. | Targeted at PCIe Gen3/4 and SAS-3 retiming where clock recovery is mandatory. | Choose DS100DF410 when deterministic jitter cleanup requires full CDR functionality, not just equalization. |
| MAX3801 | Quad CML equalizer with fixed 12 dB boost; no SMBus interface; 2.5V-only supply; 56-pin TQFP package. | Used in legacy telecom backplanes where pin-strapped simplicity and cost outweigh configurability needs. | Choose MAX3801 only for cost-sensitive, static-layout applications lacking SMBus infrastructure or voltage flexibility. |
Compared with DS100DF410 and MAX3801, DS32EV400SQ/NOPB uniquely balances programmability (SMBus + pin control), dual-supply operation, and compact WQFN packaging - making it optimal for DisplayPort/XAUI systems requiring field-adjustable equalization without CDR overhead.
Availability
DS32EV400SQ/NOPB is available at Aetrix Electronics and suitable for DisplayPort source extensions, XAUI backplane re-timing, and InfiniBand QDR interconnects requiring stable component supply and long-term production continuity.
Supply support for DS32EV400SQ/NOPB 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and high-speed interface solutions for industrial, automotive, and communications markets.
The DS32EV400SQ/NOPB belongs to TI's high-speed signal conditioning product line, designed specifically to extend reach and improve signal integrity in multi-gigabit serial links such as DisplayPort, XAUI, and InfiniBand.
FAQ
What is the maximum supported data rate for DS32EV400SQ/NOPB?
The DS32EV400SQ/NOPB is characterized and specified for operation up to 3.2 Gbps, with verified performance including 14 dB equalization and 0.12 UI residual deterministic jitter at that rate over 40" FR4 traces. It supports lower rates (1 Gbps, 2.5 Gbps) with correspondingly reduced jitter - e.g., 0.05 UI at 1 Gbps - but 3.2 Gbps is its maximum rated speed per the official SNLS280F datasheet.
Does DS32EV400SQ/NOPB require an external clock or reference signal?
No, DS32EV400SQ/NOPB does not require an external clock or reference signal. It is a pure analog equalizer with no clock-data recovery (CDR) function. All timing is recovered implicitly through the limiting amplifier's decision threshold; the device operates synchronously with the incoming data stream without needing a separate clock input.
Can DS32EV400SQ/NOPB be used with AC-coupled inputs?
Yes, DS32EV400SQ/NOPB explicitly supports AC-coupled inputs per the datasheet, including compatibility with long-run PRBS-31 patterns. Its internal DC offset correction block actively nulls baseline wander, allowing reliable operation with series capacitors on IN_n+ and IN_n− without external bias networks.
How is per-channel equalization configured on DS32EV400SQ/NOPB?
Per-channel equalization on DS32EV400SQ/NOPB is configured exclusively via the SMBus interface when the FEB pin is held low. Registers 0x03 and 0x04 control boost settings for channels 0–1 and 2–3 respectively, with three bits per channel selecting one of eight levels - enabling independent optimization for mismatched trace lengths or media types across the quad interface.
What package type and thermal characteristics does DS32EV400SQ/NOPB have?
DS32EV400SQ/NOPB uses a 7 mm × 7 mm, 48-pin WQFN package with exposed thermal pad (DAP). Its thermal resistance θJA is 30°C/W with no airflow, and it operates across –40°C to +85°C ambient. The DAP must be soldered to a solid ground plane to meet power dissipation requirements - especially critical when operating all four channels at 3.3V (up to 700 mW).
DS32EV400SQ/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 48-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Signal Processing
- Interface:
- Serial
- Voltage - Supply:
- 2.5V, 3.3V
- Supplier Device Package:
- 48-WQFN (7x7)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
DS32EV400SQ/NOPB FAQ
1.How can I place an order for DS32EV400SQ/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for DS32EV400SQ/NOPB 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 DS32EV400SQ/NOPB reliable?
The price and inventory of DS32EV400SQ/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS32EV400SQ/NOPB is usually 5 days.
3.What payment methods are accepted for DS32EV400SQ/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS32EV400SQ/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS32EV400SQ/NOPB?
DS32EV400SQ/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS32EV400SQ/NOPB 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 DS32EV400SQ/NOPB?
For technical support, including DS32EV400SQ/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS32EV400SQ/NOPB requirements.
6.How does Aetrix verify that DS32EV400SQ/NOPB is sourced from the original manufacturer or authorized distributors?
All DS32EV400SQ/NOPB 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 DS32EV400SQ/NOPB meets industry standards.
7.What is the process for return or replacement of DS32EV400SQ/NOPB?
All DS32EV400SQ/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with DS32EV400SQ/NOPB, 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 DS32EV400SQ/NOPB part is unused and in its original packaging.
Return procedure for DS32EV400SQ/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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