Texas Instruments DS100DF410SQ/NOPB

Overview

DS100DF410SQ/NOPB from Texas Instruments is a quad-channel 10.3125 Gbps retimer IC for high-speed serial links, integrating adaptive CTLE, 5-tap DFE, CDR, and programmable de-emphasis driver per channel. It operates on a single 2.5 V ±5% supply, delivers ≤300 ps propagation delay, and supports SFP+ and backplane applications with BER < 1×10⁻¹⁵.

For engineers reviewing the DS100DF410SQ/NOPB datasheet, DS100DF410SQ/NOPB pinout, DS100DF410SQ/NOPB application, or DS100DF410SQ/NOPB equivalent, this page provides verified functional identity, validated WQFN-48 pin mapping, confirmed 10.3125 Gbps Ethernet operation, real-world eye monitor and PRBS generator use cases, and two field-validated alternative retimers with documented technical distinctions.

Technical Context

The DS100DF410SQ/NOPB implements four independent data paths, each containing a fully adaptive CTLE (up to 34 dB boost at 5 GHz), self-calibrating 5-tap DFE, low-jitter CDR (5 MHz PLL bandwidth, <15 ms lock time), and a CML-compatible output driver with adjustable VOD (600–1300 mV_p-p) and de-emphasis (0 to –12 dB). All channels share one SMBus interface and support EEPROM-based configuration.

It operates in ref_mode 0 (no reference clock required) for 10.3125 Gbps 10GbE or ref_mode 3 (25 MHz ±100 ppm REFCLK_IN required) for multi-rate flexibility. Signal detect, lock indication, and interrupt outputs enable autonomous system bring-up and real-time link health monitoring without host intervention.

Key Specifications

Pinout & Package

DS100DF410SQ/NOPB uses a 7 mm × 7 mm WQFN-48 package with exposed thermal pad (DAP = GND). Pin layout supports flow-through routing for minimal trace stubs in high-speed layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar retimer applications.

Compared with DS100RT410SQ/NOPB, DS100DF410SQ/NOPB adds essential DFE for crosstalk-heavy environments; compared with DS125DF410SQ/NOPB, it offers optimized 10GbE performance at lower power and cost, with identical layout compatibility.

Availability

DS100DF410SQ/NOPB is available at Aetrix Electronics and suitable for front-port SFP+ modules, backplane reach extension, and switch fabric interconnect applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for DS100DF410SQ/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 computing markets.

The DS100DF410SQ/NOPB belongs to TI's high-speed retimer family designed specifically for 10GbE infrastructure-enabling robust signal integrity in optical modules, line cards, and switch fabric interconnects where jitter accumulation and channel loss limit reach.

FAQ

What is the primary function of the DS100DF410SQ/NOPB in a 10GbE system?

The DS100DF410SQ/NOPB functions as a quad-channel retimer that restores signal integrity in degraded 10.3125 Gbps serial links. It performs adaptive equalization (CTLE + DFE), clock and data recovery, and programmable de-emphasis to achieve BER < 1×10⁻¹⁵. Each channel operates independently, making DS100DF410SQ/NOPB ideal for SFP+ modules, backplanes, and switch fabric interconnects where jitter and loss must be actively managed.

Does the DS100DF410SQ/NOPB require an external reference clock?

The DS100DF410SQ/NOPB supports both reference clock–required (ref_mode 3) and reference clock–free (ref_mode 0) operation. For standard 10.3125 Gbps 10GbE, ref_mode 0 is used-no external REFCLK_IN needed. When operating in ref_mode 3, a 25 MHz ±100 ppm clock must be applied to REFCLK_IN; DS100DF410SQ/NOPB then buffers and distributes it via REFCLK_OUT for multi-device synchronization.

How does the DS100DF410SQ/NOPB handle power supply noise?

The DS100DF410SQ/NOPB tolerates supply noise up to 100 mV_P-P (50 Hz–100 Hz), 40 mV_P-P (100 Hz–10 MHz), and 10 mV_P-P (10 MHz–5 GHz) on its 2.5 V supply. This specification ensures stable CDR lock and low-jitter retiming under realistic board-level noise conditions. Proper decoupling with ≥4 X7R 100 nF capacitors near VDD pins and solid ground plane connection to the DAP are mandatory per TI layout guidelines.

Can the DS100DF410SQ/NOPB be configured without a microcontroller?

Yes. The DS100DF410SQ/NOPB supports SMBus master mode: when EN_SMB is left floating and READ_EN is pulsed low, it automatically loads configuration from an external I²C EEPROM. This enables standalone, microcontroller-free operation-ideal for optical modules and plug-and-play interconnects where host resources are constrained or unavailable during power-up.

What is the role of the LPF_CP_n and LPF_REF_n pins on the DS100DF410SQ/NOPB?

The LPF_CP_n and LPF_REF_n pins (n = 0–3) form per-channel loop filter connections for the CDR's PLL. A 22 nF ±10% capacitor must be placed between each LPF_CP_n and LPF_REF_n pair. These components directly set the PLL bandwidth (5 MHz typical), jitter transfer slope, and lock stability-making them critical for achieving sub-15 ms CDR lock time and low output jitter in DS100DF410SQ/NOPB applications.