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Product details

Parameters

Function Cable driver, Reclocker, Reclocker with cable driver Power consumption (mW) 300 Data rate (Max) (Gbps) 2.97 Control interface 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

Features

  • Supports ST 424(3G), 292(HD), 259(SD), MADI, and
    DVB-ASI
  • Locks to rates 2.97 Gbps, 1.485 Gbps, or Divided
    by 1.001 sub-rates, and DVB-ASI
  • Reference-free Operation with Fast Lock Time
    covering all Supported or Selected Data Rates
  • 75 Ω and 100 Ω Transmitter Outputs
  • Integrated 2:1 Mux Input, 1:2 Demux/Fanout
    Outputs
  • Automatic Slew Rate Based on Input Rate Detect
  • On-chip Eye Monitor
  • Low 300 mW Power Consumption With Automatic
    Power Down On Loss Of Input Signal
  • Programmable via SPI, Or SMBus Interface
  • Single 2.5 V Supply Operation
  • Small 4 mm × 4 mm 24-pin QFN Package
  • -40°C to +85°C Operating Temperature Range
  • Footprint compatible with LMH1218 for easy
    upgrade to 12G
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Description

The LMH0318 is a 3 Gbps HD/SD SDI Reclocker with Integrated Cable Driver designed to drive serial video data compatible to SMPTE-SDI and DVB-ASI standards. The clock and data recovery circuit eliminates accumulated jitter and detects the incoming data rate without requiring an external reference clock. The integrated driver with 75 ohm and 50 ohm outputs enables multiple media options such as coax and FR4 PCB.

The integrated 2-to-1 MUX on the input of the LMH0318 enables selection between two video sources, while the programmable equalizer compensates for the PC board loss to extend signal reach. With a wide range clockand- data recovery (CDR) circuit, the on-chip reclocker automatically detects and locks to serial data from 270 Mbps to 2.97 Gbps without the need for an external reference clock and loop filter component, thereby simplifying board design and lowering system cost. The reclocked serial data can be routed to either the 75 Ω or 50 Ω transmitter output, or both simultaneously (1-to-2 fanout mode). The output voltage swing is compatible to ST 424, 344, 292, and 259 standards.

A non-disruptive eye monitor allows for real-time measurement of serial data to simplify system startup or field tuning. The LMH0318 is pin compatible with the LMH1218, 12 Gbps Cable Driver with Integrated Reclocker.

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More Information

For more information on the LMH0318 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 LMH0318 3 Gbps HD/SD SDI Reclocker with Integrated Cable Driver datasheet Sep. 10, 2015
User guide LMH0324-18EVM User Guide (Rev. A) Jun. 11, 2018
Technical articles Three things to consider when upgrading to 4K Ultra HD 12G-SDI interfaces Apr. 13, 2016
User guide LMH0318 Programming Guide Sep. 16, 2015

Design & development

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

Hardware development

EVALUATION BOARD Download
499
Description

The LMH1218EVM evaluation module provides a complete high bandwidth platform to evaluate the SDI/UHD and 10 GbE signal conditioning features of the Texas Instruments LMH1218 UHD Cable Driver with Integrated Reclocker. The LMH1218EVM can be used for standard compliance testing, performance (...)

Features
  • Locks to standard SDI (2.97 Gbps, 1.485 Gbps, or divide-by-1.001 sub-rates), DVB-ASI (270 Mbps), ST-2081 (5.94 Gbps proposed), ST-2082 (11.88 Gbps proposed), and 10 GbE data rates
  • Integrated 2:1 50 Ω mux on input and 1:2 fan-out (one 75 Ω and one 50 Ω) output drivers with de-emphasis supporting (...)

Design tools & simulation

SIMULATION MODEL Download
SNLM143.PDF (25 KB) - IBIS Model
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 (...)

Reference designs

REFERENCE DESIGNS Download
3G-SDI Repeater With Reclocking Function Reference Design
TIDA-03028 — This verified reference design is functionally an SDI repeater/signal conditioning solution for 3G SDI applications. This reference design is compatible with SMPTE ST-424, ST-292, and ST-259 electrical requirements.
document-generic Schematic

CAD/CAE symbols

Package Pins Download
WQFN (RTW) 24 View options

Ordering & quality

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