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Product details

Parameters

Function Cable driver, Cable driver with reclocker Power consumption (mW) 315 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 (RTV) 32 25 mm² 5 x 5 open-in-new Find other Serial digital interface (SDI) ICs

Features

  • Supports ST-2082-1 (12G), ST-2081-1 (6G), ST-424 (3G), ST-292 (HD), and ST-259 (SD)
  • Compatible with DVB-ASI and AES10 (MADI)
  • Integrated reclocker locks to SMPTE rates of 11.88 Gbps, 5.94 Gbps, 2.97 Gbps, 1.485 Gbps or divide-by-1.001 sub-rates and 270 Mbps
  • Integrated Eye Opening Monitor (EOM)
  • Dual differential output cable drivers
  • On-chip 75-Ω termination and return loss compensation network
  • Adaptive PCB input equalizer
  • Reclocked 100-Ω loop-back output
  • Automatic slew rate control on 75-Ω outputs
  • Automatic pre-emphasis and output amplitude on 75-Ω outputs
  • Programmable de-emphasis and output amplitude on 100-Ω output
  • Polarity inversion on 75-Ω and 100-Ω outputs
  • Automatic power save in absence of input signal
    • Power Consumption: 25 mW (Typical)
  • Power-Down Control Through ENABLE Pin
  • Single 2.5-V Supply
    • Power consumption: 305 mW (typical)
  • Programmable through pins, SPI, or SMBus interface
  • –40°C to +85°C operating temperature range
  • 5-mm × 5-mm, 32-pin WQFN package

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Description

LMH1228 device is a 12G UHD-SDI low power dual output cable driver with integrated reclocker. It supports SMPTE video rates up to 11.88 Gbps, enabling UHD video for 4K/8K applications. With a wide range clock-and-data recovery (CDR) circuit, the on-chip reclocker automatically detects and locks to all SMPTE video rates up to 11.88 Gbps. The additional reclocked 100-Ω driver output on the host-side can be used for monitoring or signal distribution purposes.

The on-chip reclocker attenuates high-frequency jitter and fully regenerates the data using a clean, low-jitter clock. The reclocker has a built-in loop filter and does not require any input reference clock. The LMH1228 also has an internal eye opening monitor and a programmable pin for CDR lock indication, input signal detect, or hardware interrupts to support system diagnostics and board bring-up.

The LMH1228 is powered from a single 2.5-V supply. It is offered in a small footprint 5 mm × 5 mm 32-pin WQFN package. The LMH1228 is pin compatible with the LMH1208 (12G Dual Cable Driver).

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More Information

For more information on the LMH1228 programming guide and IBIS-AMI models.  Request Now

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 4
Type Title Date
* Datasheet LMH1228 12G UHD-SDI Dual Output Cable Driver With Integrated Reclocker datasheet (Rev. D) May 12, 2020
Application note LMH121x 12G SDI PCB Layout Guidelines Feb. 19, 2020
Application note Simplifying 4K SDI Video Design with a Bidrectional I/O Oct. 31, 2017
Technical articles Three reasons why a bidirectional I/O will simplify your next 4K video design Sep. 06, 2017

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
399
Description
The LMH1297EVM is an evaluation module (EVM) designed for high-speed performance and functional evaluation of the Texas Instruments LMH1297 12-G UHD-SDI bidirectional I/O with integrated reclocker. With this kit, you can quickly evaluate the cable reach and output signal integrity supported (...)
Features
  • User-configurable adaptive cable equalizer or cable driver with integrated reclocker
  • Supports ST-2082-1 (12 G), ST-2081-1 (6 G), ST-424 (3 G), ST-292 (HD), ST-259 (SD)
  • Integrated reclocker locks to SMPTE video rates of 11.88 Gbps, 5.94 Gbps, 2.97 Gbps, 1.485 Gbps or divide-by-1.001 Sub-Rates and 270 (...)

Design tools & simulation

SIMULATION TOOL Download
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 (...)
Features
  • 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
  • (...)
SIMULATION TOOL Download
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 (...)

CAD/CAE symbols

Package Pins Download
WQFN (RTV) 32 View options

Ordering & quality

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