Product details


Function Reclocker Power consumption (mW) 209 Data rate (Max) (Gbps) 11.88 Control interface Pin, SMBus, SPI Operating temperature range (C) -40 to 85 open-in-new Find other Serial digital interface (SDI) ICs

Package | Pins | Size

WQFN (RTW) 24 16 mm² 4 x 4 open-in-new Find other Serial digital interface (SDI) ICs


  • Supports ST-2082-1(12G), ST-2081-1(6G), ST-424(3G), ST-292(HD), and ST-259(SD)
  • Supports SFF8431 (SFP+) for SMPTE 2022-5/6
  • Compatible with DVB-ASI and AES10 (MADI)
  • Reference-Less Reclocker Locks to SMPTE and 10 GbE Rates: 11.88 Gbps, 5.94 Gbps, 2.97 Gbps, 1.485 Gbps, or Divide-by-1.001 Sub-Rates, 270 Mbps, and 10.3125 Gbps
  • Reference Free With Fast Lock Time
  • Adaptive Board Trace Equalizer at Input 1 (IN1)
  • Low Power: 214 mW (typical)
  • Power-Save Mode: 16 mW
  • Integrated 1:2 Fanout Outputs with De-Emphasis
  • On-Chip Loop Filter and Eye Opening Monitor
  • Powers from Single 2.5 V with On-Chip 1.8 V Regulator
  • Configurable by Control Pins, SPI, or SMBus Interface
  • 4-mm × 4-mm 24-Pin QFN Package
  • Operating Temperature Range: –40°C to +85°C

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The LMH1226 is a low-power, dual-output 12G UHD reclocker. It supports SMPTE video rates up to 11.88 Gbps and 10 GbE video over IP, enabling UHD video for 4K/8K applications. An adaptive board trace equalizer at IN1 is SFF-8431 compatible and supports both SMPTE and 10 GbE data rates.

The reclocker attenuates high frequency jitter and provides the best signal integrity. High input jitter tolerance of the reclocker improves timing margin. The reclocker has built-in loop filter and operates without the need of a precision input reference clock. A non-disruptive eye monitor allows for real time measurement of the serial data to simplify system debug and accelerate board bring-up.

The integrated 1:2 fanout provides flexibility for multiple video signals. The output drivers offer programmable de-emphasis to compensate board trace losses at its outputs. The typical power consumption of LMH1226 is 214 mW. In the absence of input signal, power is further reduced to 16 mW.

The LMH1226 is pin compatible with the LMH1219 (12G-UHD cable equalizer with integrated reclocker).

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More Information

For more information on the LMH1226 programming guide and IBIS-AMI models.  Request Now

Technical documentation

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Type Title Date
* Datasheet LMH1226 Low-Power, Dual-Output 12-G UHD Reclocker datasheet (Rev. D) Jun. 08, 2018
Application note LMH121x 12G SDI PCB Layout Guidelines Feb. 19, 2020

Design & development

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Hardware development

document-generic User guide
The LMH1219EVM Evaluation Board provides a complete high bandwidth platform to evaluate the SDI and 10 GbE signal conditioning features of the Texas Instruments LMH1219 UHD Cable Equalizer. The LMH1219EVM can be used for standard compliance testing, performance evaluation, and initial system (...)

Design tools & simulation

PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SPICE-based analog simulation program
TINA-TI TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
document-generic User guide

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