Texas Instruments DS110DF410SQE/NOPB

Overview

DS110DF410SQE/NOPB from Texas Instruments is a quad-channel, multi-rate retimer IC for high-speed serial links. It performs adaptive CTLE equalization, 5-tap DFE, CDR, and programmable de-emphasis on each channel independently. Supports 8.5–11.3 Gbps data rates (including 10GbE, Fibre Channel, InfiniBand) with ≤300 ps propagation delay and <1×10⁻¹⁵ BER over lossy backplanes and passive copper cables.

For engineers reviewing the DS110DF410SQE/NOPB datasheet, DS110DF410SQE/NOPB pinout, DS110DF410SQE/NOPB application, or DS110DF410SQE/NOPB equivalent, key selection criteria include per-channel rate independence, 34-dB adaptive EQ boost at 5 GHz, 2.5-V single-supply operation, WQFN-48 package thermal performance, and SMBus/EEPROM configurability for production deployment.

Technical Context

The DS110DF410SQE/NOPB implements a full signal conditioning data path per channel: adaptive CTLE (4-stage, 256 boost combinations), self-calibrating 5-tap DFE, wideband CDR with 5-MHz PLL bandwidth, and differential CML driver with adjustable VOD (600–1300 mV_p-p) and de-emphasis (up to –12 dB). Each channel uses independent lock detection and supports protocol-select fast-lock mode using a 25-MHz reference clock.

It operates in a single 2.5-V ±5% supply across –40°C to +85°C, delivers typical power of 180 mW/channel (720 mW total), and integrates on-chip eye monitor (EOM) and PRBS generator for real-time link validation. Loop filter pins (LPF_CP_n/LPF_REF_n) require external 22-nF capacitors per channel for stable CDR operation.

Key Specifications

Pinout & Package

DS110DF410SQE/NOPB is housed in a thermally enhanced 48-pin WQFN package (7.0 mm × 7.0 mm, 0.5-mm pitch) with exposed thermal pad (DAP) requiring ≥4 vias to ground plane. Pin functions are fully differential and channel-isolated, supporting independent configuration per lane.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DS110RT410, DS110DF410SQE/NOPB adds essential DFE for severe ISI compensation in long backplanes; compared with DS125DF410, it offers optimal power/performance trade-off for proven 10.3125-Gbps deployments without over-specifying.

Availability

DS110DF410SQE/NOPB is available at Aetrix Electronics and suitable for 10GbE line cards, Fibre Channel storage arrays, and InfiniBand switch fabrics requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for DS110DF410SQE/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 communications, industrial, and automotive markets.

The DS110DF410SQE/NOPB belongs to TI's high-speed retimer product line, designed specifically to solve signal integrity challenges in multi-gigabit serial interconnects for networking, data center, and telecom infrastructure.

FAQ

What data rates does the DS110DF410SQE/NOPB support?

The DS110DF410SQE/NOPB supports independent per-channel locking from 8.5 Gbps to 11.3 Gbps, including standard sub-rates (÷2, ÷4, ÷8) for 10GbE (10.3125 Gbps), Fibre Channel (8.5/14.025 Gbps), InfiniBand QDR (10.3125 Gbps), and SONET OC-192 (9.953 Gbps). It does not support rates below 8.5 Gbps or above 11.3 Gbps.

Does the DS110DF410SQE/NOPB require an external reference clock?

Yes, the DS110DF410SQE/NOPB requires a 25-MHz ±100 ppm reference clock applied to the REFCLK_IN pin. This clock accelerates CDR lock acquisition but is not used for PLL training. The device provides a buffered REFCLK_OUT for daisy-chaining multiple DS110DF410SQE/NOPB units on the same board.

How is the DS110DF410SQE/NOPB configured during system startup?

The DS110DF410SQE/NOPB supports two configuration modes: SMBus slave mode (EN_SMB = high) for host-processor initialization, or SMBus master mode (EN_SMB floating) to auto-load settings from an external EEPROM. Configuration registers control VOD, de-emphasis, CTLE adaptation, and DFE enablement per channel.

What is the thermal design requirement for the DS110DF410SQE/NOPB?

The DS110DF410SQE/NOPB uses a 7-mm × 7-mm WQFN package with an exposed thermal pad (DAP). For reliable operation at full load (720 mW), the DAP must be soldered to a solid ground plane using ≥4 thermal vias. Its junction-to-ambient thermal resistance (RθJA) is 26.1°C/W - PCB layout must provide adequate copper area and airflow per TI's SNLS397D layout guidelines.

Can the DS110DF410SQE/NOPB operate without DFE enabled?

Yes, the DS110DF410SQE/NOPB allows DFE to be disabled per channel via SMBus register control. When DFE is off, the device operates with CTLE+CDR+DE only - functionally equivalent to the DS110RT410. DFE is optional and should be enabled only when measured ISI exceeds CTLE correction capability, as it adds ~20 mW/channel power and slight latency.