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Texas Instruments DS110DF410SQ/NOPB
- Part No.:
- DS110DF410SQ/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Specialized
- Package:
- 48-WFQFN Exposed Pad
- Datasheet:
-
DS110DF410SQ/NOPB.pdf
- Description:
- IC INTERFACE SPECIALIZED 48WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:788
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Product details
Overview
DS110DF410SQ/NOPB from Texas Instruments is a quad-channel, multi-rate retimer IC with integrated CTLE, 5-tap DFE, CDR, and programmable de-emphasis driver. It operates independently per channel across 8.5–11.3 Gbps (including sub-rates ÷2/÷4/÷8), delivers ≤300 ps propagation delay, supports 10GbE/Fibre Channel/InfiniBand/SFP+ optical and passive copper links, and targets high-speed serial interconnects in switch fabric and line card applications.
For engineers reviewing the DS110DF410SQ/NOPB datasheet, DS110DF410SQ/NOPB pinout, DS110DF410SQ/NOPB application, or DS110DF410SQ/NOPB equivalent, key selection considerations include per-channel adaptive equalization up to 34 dB at 5 GHz, adjustable transmit VOD (600–1300 mVp-p), SMBus/EEPROM configuration, on-chip eye monitor, and WQFN-48 package compatibility with backplane and midplane signal integrity requirements.
Technical Context
The DS110DF410SQ/NOPB implements a full retiming data path per channel: adaptive CTLE (4-stage, 256 boost combinations, 32 preloaded EQ table entries), self-calibrating 5-tap DFE for post-cursor ISI suppression, CDR with 5-MHz PLL bandwidth and 25-MHz reference-assisted VCO coarse tuning, and a CML output driver with analog de-emphasis (–12 dB max) and polarity inversion. All blocks operate under a single 2.5-V ±5% supply.
Each channel features independent lock detection (LOCK_n), real-time signal detect (70 mVp-p ON / 10 mVp-p OFF thresholds), PRBS generator, and eye opening monitor (EOM). Configuration is supported via SMBus slave mode or master-mode EEPROM auto-load, with strap pins (ADDR_[3:0]) shared between SMBus addressing and lock indication.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate Range | 8.5–11.3 Gbps per channel, including sub-rates ÷2/÷4/÷8 - enables protocol flexibility across 10GbE, Fibre Channel, InfiniBand, SONET. |
| Equalization | Adaptive CTLE (up to 34-dB boost at 5 GHz) + 5-tap DFE - compensates for lossy FR-4 backplanes and crosstalk-impaired channels. |
| Propagation Delay | Typical 300 ps - preserves timing budgets in low-latency switch fabric and ASIC interconnects. |
| Power Dissipation | 180 mW/channel typical (EQ+DFE+CDR+DE active) - enables dense quad-channel deployment with thermal management. |
| Output Drive | Adjustable VOD (600–1300 mVp-p) and de-emphasis (–12 dB max) - matches varying channel loss profiles without external components. |
| Supply & Temp | 2.5 V ±5% supply; –40°C to +85°C operating range - suitable for industrial and telecom infrastructure environments. |
| Jitter Performance | Input jitter tolerance 0.6 UI (10 kHz–250 MHz); output total jitter ≤10 ps (BER = 10–12) - resets system jitter budget for cascaded links. |
Pinout & Package
DS110DF410SQ/NOPB uses a 48-pin WQFN package (7.0 mm × 7.0 mm, 0.5-mm pitch) with exposed thermal pad (DAP = GND). Pin functions are validated per TI SNLS397D Rev D datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RXPn / RXNn (n=0–3) | Differential CML input pair | AC-coupled 100-Ω differential receiver inputs supporting 8.5–11.3 Gbps; enable signal detect and CTLE adaptation. |
| TXPn / TXNn (n=0–3) | Differential CML output pair | AC-coupled 100-Ω outputs with programmable VOD and de-emphasis; drive SFP+ modules or backplane traces. |
| LOCK_n / ADDR_n (n=0–3) | Shared function pin | Indicates CDR lock status at power-up; also sets SMBus address when strapped during initialization. |
| LPF_CP_n / LPF_REF_n (n=0–3) | Loop filter connection | Connect 22-nF capacitor between each CP/REF pair to stabilize CDR PLL loop dynamics per channel. |
| REFCLK_IN / REFCLK_OUT | 25-MHz reference I/O | 2.5-V input clock accelerates CDR lock; buffered output allows daisy-chaining multiple DS110DF410SQ/NOPB devices. |
| SDA / SDC / EN_SMB | SMBus interface | 3.3-V tolerant open-drain bus for register programming; EN_SMB float = master mode (EEPROM load), high = slave mode. |
Key Features
| Feature | Design Value |
|---|---|
| Per-channel adaptive CTLE + DFE | Enables robust operation over 40-inch FR-4 striplines with >30-dB loss; eliminates need for external equalization ICs. |
| Low-latency retiming | 300-ps propagation delay ensures minimal impact on system timing closure in high-frequency switch fabrics. |
| On-chip eye monitor (EOM) | Provides real-time horizontal/vertical eye opening metrics for field tuning and production test without external BERT. |
| Programmable output polarity | Allows correction of board-level trace inversions without hardware redesign or layer re-spin. |
| Single 2.5-V supply operation | Reduces power delivery complexity versus dual-supply retimers; simplifies PCB layout and BOM. |
Applications
| 10GbE Switch Fabric Interconnect | Fibre Channel Line Cards |
|---|---|
|
Use Scenario: Retiming 10.3125-Gbps signals between ASICs and SFP+ cages across lossy midplane connectors in modular switches. IC Role / Device Role / Timing Role: Quad-channel retimer restoring signal integrity and jitter performance after 20+ inch FR-4 routing and connector insertion loss. Use Value: Enables reliable 10GbE link operation with BER < 1×10–15 despite >25-dB channel loss at Nyquist frequency. |
Use Scenario: Extending reach of 8.5-Gbps Fibre Channel links from host adapter ASICs to optical transceivers in storage area network (SAN) line cards. IC Role / Device Role / Timing Role: Independent per-lane retiming with adaptive CTLE/DFE to suppress crosstalk-induced ISI in dense multi-lane PCB layouts. Use Value: Eliminates need for expensive low-loss laminates while maintaining FC-PI-4 compliance and hot-plug interoperability. |
| InfiniBand EDR Backplane Links | SONET OC-192 / OTU2 Systems |
|
Use Scenario: Reconditioning 25.78125-Gbps (x2 subrate) InfiniBand EDR signals across 30-inch backplane traces in HPC blade servers. IC Role / Device Role / Timing Role: Subrate-aware retimer locking to 12.890625-Gbps lanes using ÷2 division; provides deterministic latency and jitter cleanup. Use Value: Achieves required 0.3-UI jitter tolerance at receiver input while supporting legacy IB QDR/DDR compatibility. |
Use Scenario: Retiming 10.709-Gbps SONET OC-192 or OTU2 signals in telecom transport shelf line cards with legacy FR-4 backplanes. IC Role / Device Role / Timing Role: Protocol-transparent retimer meeting GR-253-CORE jitter transfer and generation requirements for synchronous optical networks. Use Value: Meets Telcordia GR-1312-CORE mask for output jitter (≤1.5 UIpp) without external clock clean-up circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar retimer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS110RT410 | No DFE; CTLE+CDR+DE only; supports same 8.5–11.3 Gbps range but lacks decision feedback for severe post-cursor ISI. | Better suited for shorter channels (<15-inch FR-4) where CTLE alone suffices; lower power (120 mW/channel). | Select DS110RT410 when cost and power are prioritized over maximum channel loss compensation capability. |
| DS125DF410 | Higher rate range (9.8–12.5 Gbps); identical CTLE+DFE+CDR+DE architecture but optimized for 12.5-Gbps protocols like CPRI and 100GbE KR4. | Required for 12.5-Gbps applications (e.g., 100G Ethernet CAUI-4); not backward-compatible with 8.5-Gbps SONET OC-192. | Choose DS125DF410 only when targeting ≥12.5-Gbps standards; DS110DF410 remains optimal for 8.5–11.3 Gbps legacy and mixed-protocol systems. |
Compared with DS110RT410, DS110DF410SQ/NOPB adds critical DFE functionality for long backplanes, while DS125DF410 extends upper-rate support at the expense of 8.5-Gbps compatibility-making DS110DF410SQ/NOPB the precise fit for multi-standard 10GbE/Fibre Channel/SONET infrastructure requiring both robust equalization and broad subrate coverage.
Availability
DS110DF410SQ/NOPB is available at Aetrix Electronics and suitable for 10GbE switch fabric interconnects, Fibre Channel line cards, InfiniBand backplane links, and SONET OC-192 systems requiring stable component supply across extended product lifecycles.
Supply support for DS110DF410SQ/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 company specializing in analog, embedded processing, and high-speed interface solutions for industrial, communications, and enterprise infrastructure markets.
The DS110DF410SQ/NOPB belongs to TI's high-speed retimer product line, designed specifically to restore signal integrity in multi-gigabit serial links across telecom, datacom, and storage systems with emphasis on low latency, adaptive equalization, and protocol flexibility.
FAQ
What data rates does the DS110DF410SQ/NOPB support?
The DS110DF410SQ/NOPB supports per-channel data rates from 8.5 Gbps to 11.3 Gbps, including all standard sub-rates achieved by dividing the base rate by 2, 4, or 8. This covers 10GbE (10.3125 Gbps), Fibre Channel (8.5 Gbps), InfiniBand QDR (10.3125 Gbps), SONET OC-192 (9.953 Gbps), and OTU2 (10.709 Gbps). The DS110DF410SQ/NOPB achieves this through its wide-range VCO and protocol-select lock mode, ensuring reliable operation across heterogeneous protocol environments.
Does the DS110DF410SQ/NOPB require an external reference clock?
Yes, the DS110DF410SQ/NOPB requires a 25-MHz ±100 ppm reference clock applied to the REFCLK_IN pin. This clock is used solely to accelerate CDR lock acquisition by calibrating the VCO coarse tuning setting; it is not part of the data path PLL and does not need phase alignment with the serial data. The device provides a buffered REFCLK_OUT for daisy-chaining multiple DS110DF410SQ/NOPB units on the same board, eliminating need for additional oscillators.
How is the DS110DF410SQ/NOPB configured-SMBus or EEPROM?
The DS110DF410SQ/NOPB supports both SMBus slave mode (register writes via SDA/SDC) and SMBus master mode (auto-configuration from external EEPROM). In master mode, the device reads configuration data upon power-up when READ_EN transitions low; EN_SMB must be left floating. Strap pins ADDR_[3:0] set the SMBus address in slave mode and double as LOCK_n indicators. This dual-mode flexibility allows factory programming via EEPROM or dynamic runtime tuning via host processor-both fully supported for the DS110DF410SQ/NOPB.
What is the purpose of the LPF_CP_n and LPF_REF_n pins on the DS110DF410SQ/NOPB?
The LPF_CP_n and LPF_REF_n pins on the DS110DF410SQ/NOPB form the loop filter connections for each channel's CDR PLL. A 22-nF ±10% capacitor must be placed between each CP_n and REF_n pair to stabilize the control loop dynamics and ensure jitter transfer compliance. These pins directly interface with the internal charge pump and reference buffer; incorrect capacitor value or placement causes unstable lock behavior or excessive output jitter. Each of the four DS110DF410SQ/NOPB channels has its own dedicated LPF network for independent loop optimization.
Can the DS110DF410SQ/NOPB operate without DFE enabled?
Yes, the DS110DF410SQ/NOPB can operate with DFE disabled-its CTLE and CDR blocks function independently. The DFE is a manually enabled feature (via SMBus register) intended for channels suffering severe post-cursor ISI (e.g., >30-inch FR-4 or high-crosstalk backplanes). When disabled, the DS110DF410SQ/NOPB consumes less power (~120 mW/channel) and exhibits slightly faster lock time. However, for maximum reach extension in lossy environments, enabling the 5-tap DFE is essential-and confirmed functional for all supported data rates in the DS110DF410SQ/NOPB datasheet.
DS110DF410SQ/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 48-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Ethernet
- Interface:
- I2C
- Voltage - Supply:
- 2.375V ~ 2.625V
- Supplier Device Package:
- 48-WQFN (7x7)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
DS110DF410SQ/NOPB FAQ
1.How can I place an order for DS110DF410SQ/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for DS110DF410SQ/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 DS110DF410SQ/NOPB reliable?
The price and inventory of DS110DF410SQ/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS110DF410SQ/NOPB is usually 5 days.
3.What payment methods are accepted for DS110DF410SQ/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS110DF410SQ/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS110DF410SQ/NOPB?
DS110DF410SQ/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS110DF410SQ/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 DS110DF410SQ/NOPB?
For technical support, including DS110DF410SQ/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS110DF410SQ/NOPB requirements.
6.How does Aetrix verify that DS110DF410SQ/NOPB is sourced from the original manufacturer or authorized distributors?
All DS110DF410SQ/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 DS110DF410SQ/NOPB meets industry standards.
7.What is the process for return or replacement of DS110DF410SQ/NOPB?
All DS110DF410SQ/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with DS110DF410SQ/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 DS110DF410SQ/NOPB part is unused and in its original packaging.
Return procedure for DS110DF410SQ/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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