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Texas Instruments DS38EP100SDX/NOPB
- Part No.:
- DS38EP100SDX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Specialized
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
DS38EP100SDX/NOPB.pdf
- Description:
- IC INTERFACE SPECIALIZED 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,197
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Product details
Overview
DS38EP100SDX/NOPB from Texas Instruments is a passive 100Ω differential equalizer IC designed for high-speed serial data paths in backplane and cable interconnects. It operates from 1 to 5 Gbps, delivers up to 7 dB boost at 2.5 GHz, requires no power or ground connections, supports CML/LV-PECL/LVDS signaling, and features symmetric I/O for bi-directional operation in FR4 or coaxial cable channels.
For engineers reviewing the DS38EP100SDX/NOPB datasheet, DS38EP100SDX/NOPB pinout, DS38EP100SDX/NOPB application, or DS38EP100SDX/NOPB equivalent, this page provides verified technical context, real-world performance metrics, validated alternative options, and design-critical layout guidance for signal integrity optimization in PCIe Gen1/Gen2 and XAUI systems.
Technical Context
The DS38EP100SDX/NOPB implements a passive bridged-T network using resistive, capacitive, and inductive elements to provide linear, frequency-dependent compensation. Its bandpass response attenuates low frequencies while boosting mid-band loss-specifically delivering 6 dB typical equalization at 2.5 GHz relative to 100 MHz-without introducing nonlinearity or protocol dependency.
It functions as a bidirectional, code-independent equalizer with 100Ω differential input/output impedance, symmetric I/O terminals (IOA+/IOA− and IOB+/IOB−), and zero DC power draw. The device operates anywhere in the data path-between transmitter and receiver-and maintains deterministic jitter reduction (≤0.15 UIp-p residual DJ at 3.8–5 Gbps) across FR4 traces up to 40 inches and HDMI/PCIe cables up to 10 meters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Bit Rate | 1 to 5 Gbps - supports full PCIe Gen1 (2.5 Gbps) and Gen2 (5 Gbps), XAUI (3.125 Gbps), and HDMI 1.3 (3.4 Gbps) data rates. |
| Equalization Boost | Up to 7 dB maximum - compensates for channel insertion loss, extending usable reach without active amplification or power supply. |
| Differential Impedance | 100 Ω - matches standard high-speed differential interfaces (CML, LV-PECL, LVDS), enabling direct integration into controlled-impedance PCB layouts. |
| Residual Deterministic Jitter | 0.1–0.15 UIp-p - measured after equalization on 30–40 inch FR4 microstrip; ensures eye opening compliance in multi-gigabit links. |
| Package | 2.2 mm × 2.5 mm WSON-6 - ultra-compact footprint enables placement adjacent to connectors or ASICs with minimal trace discontinuity. |
| Power Requirement | No power or ground required - eliminates need for local decoupling, LDOs, or routing constraints associated with active equalizers. |
| Signal Compatibility | CML, LV-PECL, LVDS - supports common high-speed logic families without level-shifting or termination redesign. |
Pinout & Package
DS38EP100SDX/NOPB is housed in a 2.2 mm × 2.5 mm, 6-pin leadless WSON package (NGF) with exposed thermal pad (DAP) left unconnected. Pin 2 and Pin 5 are No Connect (NC); DAP must remain floating per TI layout guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IOA+ | Differential Input/Output Terminal A (positive) | One leg of first 100Ω differential port; bidirectional-functions as Tx or Rx depending on system topology. |
| IOA− | Differential Input/Output Terminal A (negative) | Complementary leg of first differential port; must be routed as matched-length, 100Ω-controlled pair. |
| IOB+ | Differential Input/Output Terminal B (positive) | One leg of second 100Ω differential port; symmetric to IOA+ for full-duplex or cross-point placement flexibility. |
| IOB− | Differential Input/Output Terminal B (negative) | Complementary leg of second differential port; identical electrical behavior to IOA−; enables reversal of signal flow direction. |
| Pin 2, Pin 5 | No Connect (NC) | Must remain unconnected on PCB; landing pads isolated from all planes to prevent parasitic coupling or ESD discharge paths. |
Key Features
| Feature | Design Value |
|---|---|
| Passive Equalization Architecture | Resistive-capacitive-inductive bridged-T network eliminates need for biasing, clocking, or configuration-reducing BOM count and layout complexity. |
| Bi-directional Symmetric I/O | Identical electrical characteristics on both ports enable placement anywhere in the data path (Tx-side, Rx-side, or mid-channel) without redesign. |
| Protocol-Agnostic Operation | No dependency on line coding (8b/10b, scrambled, or NRZ); preserves signal integrity regardless of encoding scheme used by host SerDes. |
| Zero-Power Signal Conditioning | Operates without VCC or GND pins-removes risk of power rail noise injection and simplifies thermal management in dense interconnect zones. |
| FR4 and Cable Reach Extension | Validated to restore eye height >0.8 V and reduce DJ to ≤0.15 UIp-p on 40-inch 6-mil FR4 and 10-meter 24AWG PCIe cables at 5 Gbps. |
Applications
| PCIe Gen1/Gen2 Backplane Interconnect | XAUI-Based Switch Fabric |
|---|---|
|
Use Scenario: 40-inch FR4 backplane connecting line cards to switch fabric in enterprise storage chassis. IC Role / Device Role / Timing Role: Passive equalizer placed mid-channel to compensate for skin-effect and dielectric losses, restoring signal integrity before receiver CDR. Use Value: Enables reliable 5 Gbps operation over legacy FR4 infrastructure without redesigning stack-up or adding active repeaters. |
Use Scenario: 34-inch Tyco XAUI backplane in telecom switching equipment with multiple line cards and central switch card. IC Role / Device Role / Timing Role: Bidirectional equalizer deployed on both line card and switch card to maintain symmetric link margin and minimize deterministic jitter accumulation. Use Value: Achieves <0.15 UIp-p residual DJ and >0.8 V eye height at 3.125 Gbps, meeting XAUI compliance requirements without protocol-aware tuning. |
| HDMI 1.3 Cable Extender | Multi-Gigabit Industrial Serial Link |
|
Use Scenario: 10-meter 26AWG HDMI cable running between AV source and display in digital signage installations. IC Role / Device Role / Timing Role: Passive equalizer integrated at transmitter end to pre-compensate for cable attenuation and dispersion before signal launch. Use Value: Restores eye opening at 2.25 Gbps, eliminating need for active redrivers and reducing EMI from powered components near video interfaces. |
Use Scenario: 5-meter 28AWG shielded twisted-pair cable linking FPGA-based motion controller to servo drive in factory automation. IC Role / Device Role / Timing Role: Low-power equalizer embedded in controller PCB to extend reach of custom 3.4 Gbps LVDS-based serial interface. Use Value: Maintains deterministic jitter <0.1 UIp-p and supports robust lock acquisition in CDR circuits under variable temperature and EMI conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar passive equalizer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS100BR111SD/NOPB | Active 1–10.3125 Gbps equalizer with programmable gain (0–12 dB), requires 3.3 V supply and I²C configuration. | Supports higher data rates and adaptive tuning but adds power, layout, and firmware overhead. | Select when dynamic adjustment or >5 Gbps support is required; not drop-in compatible due to active architecture and pinout. |
| MAX3801ETE+ | Passive 1–4 Gbps equalizer in 16-pin TQFN; 100Ω I/O, 6 dB max boost, but larger 4 mm × 4 mm footprint and different pin assignment. | Validated for SONET/SDH and Fibre Channel; less optimized for PCIe/XAUI eye diagrams and FR4 loss profiles. | Consider for legacy telecom designs where MAXIM ecosystem integration exists; requires PCB redesign due to package size and pin mapping. |
Compared with DS38EP100SDX/NOPB, the DS100BR111SD/NOPB offers wider bandwidth and configurability at the cost of power dependency and complexity, while the MAX3801ETE+ provides similar passive operation but with lower data-rate ceiling and less compact layout-making DS38EP100SDX/NOPB optimal for space-constrained, zero-power PCIe/XAUI extensions.
Availability
DS38EP100SDX/NOPB is available at Aetrix Electronics and suitable for PCIe Gen2 backplanes, XAUI switch fabrics, HDMI cable extenders, and industrial multi-gigabit serial links requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for DS38EP100SDX/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, with decades of expertise in signal integrity and timing products.
The DS38EP100SDX/NOPB belongs to TI's Power-Saver equalizer product line, engineered specifically for passive, zero-power compensation of transmission losses in FR4 backplanes and copper cables-targeting cost-sensitive, thermally constrained, and high-reliability applications.
FAQ
Does DS38EP100SDX/NOPB require a power supply or ground connection?
No, DS38EP100SDX/NOPB is a fully passive device and requires no power supply or ground connection. It operates solely through its internal resistive-capacitive-inductive network, eliminating the need for decoupling capacitors, voltage regulators, or PCB routing for power rails-reducing design complexity and board area. This zero-power characteristic is confirmed in the TI datasheet SNLS278C Section 1 "FEATURES" and Absolute Maximum Ratings table.
What is the maximum supported data rate for DS38EP100SDX/NOPB?
The DS38EP100SDX/NOPB is specified for operation from 1 to 5 Gbps, with guaranteed performance including ≤0.15 UIp-p residual deterministic jitter at 5 Gbps over 30-inch FR4 traces. TI validates this range across multiple protocols including PCIe Gen2 (5 Gbps), XAUI (3.125 Gbps), and HDMI 1.3 (3.4 Gbps), as documented in the Electrical Characteristics and Typical Performance Characteristics sections of SNLS278C.
Can DS38EP100SDX/NOPB be used with LVDS, CML, and LV-PECL signals?
Yes, DS38EP100SDX/NOPB supports CML, LV-PECL, and LVDS signaling standards. Its 100Ω differential input/output impedance and symmetric I/O structure ensure compatibility without level shifting or termination changes. The datasheet explicitly lists "Equalizes CML, LV-PECL, LVDS Signals" in the FEATURES section and confirms 1000–3600 mVp-p input swing tolerance, covering standard voltage ranges for all three families.
Is DS38EP100SDX/NOPB bidirectional, and how does that affect placement?
Yes, DS38EP100SDX/NOPB is fully bidirectional due to its symmetric I/O architecture (IOA+/IOA− and IOB+/IOB−). Signals receive identical equalization whether flowing from IOA to IOB or IOB to IOA-enabling placement anywhere in the data path: transmitter-side, receiver-side, or mid-channel. This flexibility is validated in TI's Simplified Application Diagram and Application Information section, allowing optimal routing without directional constraints.
What package type and dimensions does DS38EP100SDX/NOPB use?
DS38EP100SDX/NOPB uses a 6-pin WSON package (TI package code NGF) measuring 2.2 mm × 2.5 mm with an exposed thermal pad (DAP). Pin 2 and Pin 5 are No Connect (NC), and the DAP must remain unconnected per TI layout guidelines. This compact footprint is documented in the PACKAGE OPTION ADDENDUM and MECHANICAL DATA NGF0006A drawing on ti.com.
DS38EP100SDX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- Displays
- Interface:
- Coax Cable and Female Connector
- Voltage - Supply:
- -
- Supplier Device Package:
- 6-WSON (2.2x2.5)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
DS38EP100SDX/NOPB FAQ
1.How can I place an order for DS38EP100SDX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for DS38EP100SDX/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 DS38EP100SDX/NOPB reliable?
The price and inventory of DS38EP100SDX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS38EP100SDX/NOPB is usually 5 days.
3.What payment methods are accepted for DS38EP100SDX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS38EP100SDX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS38EP100SDX/NOPB?
DS38EP100SDX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS38EP100SDX/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 DS38EP100SDX/NOPB?
For technical support, including DS38EP100SDX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS38EP100SDX/NOPB requirements.
6.How does Aetrix verify that DS38EP100SDX/NOPB is sourced from the original manufacturer or authorized distributors?
All DS38EP100SDX/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 DS38EP100SDX/NOPB meets industry standards.
7.What is the process for return or replacement of DS38EP100SDX/NOPB?
All DS38EP100SDX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with DS38EP100SDX/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 DS38EP100SDX/NOPB part is unused and in its original packaging.
Return procedure for DS38EP100SDX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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