SNLS308G April   2009  – June 2015 LMH0384

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 DC Electrical Characteristics
    6. 6.6 AC Electrical Characteristics
    7. 6.7 Timing Requirements
    8. 6.8 Switching Characteristics
    9. 6.9 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Block Description
      2. 7.3.2 Mute Reference (MUTEREF)
      3. 7.3.3 Carrier Detect (CD) and Mute
      4. 7.3.4 Auto Sleep
      5. 7.3.5 Input Interfacing
      6. 7.3.6 Output Interfacing
    4. 7.4 Device Functional Modes
    5. 7.5 Programming
      1. 7.5.1 SPI Write
      2. 7.5.2 SPI Read
      3. 7.5.3 Output Driver Adjustments
      4. 7.5.4 Launch Amplitude Optimization
      5. 7.5.5 Cable Length Indicator (CLI)
      6. 7.5.6 Application of CLI: Extending 3G Reach
      7. 7.5.7 Explanation of Extended 3G Reach Mode State Machine ()
    6. 7.6 Register Maps
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Replacing the LMH0344
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
    3. 8.3 Dos and Don'ts
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

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1 Features

  • Compliant With ST 424, ST 292, ST 344, and ST 259(1)
  • Supports DVB-ASI at 270 Mbps
  • Wide Range of Data Rates: 125 Mbps to 2.97 Gbps
  • Equalizes up to 140 Meters of Belden 1694A at 2.97 Gbps, up to 200 Meters of Belden 1694A at 1.485 Gbps, or Up to 400 Meters of Belden 1694A at 270 Mbps
  • Power Save Mode With Auto Sleep Control (35 mW Typical Power Consumption in Power Save Mode)
  • Optional SPI Register Access
  • Manual Bypass and Output Mute With a Programmable Threshold
  • Internally Terminated 100-Ω LVDS Outputs With SPI Programmable Output Common-Mode Voltage and Swing
  • Programmable Launch Amplitude Optimization in SPI Mode
  • Cable Length Indicator in SPI Mode
  • Single 3.3-V Supply Operation
  • 16-Pin WQFN  Package
  • Industrial Temperature Range: −40°C to +85°C
  • Footprint Compatible With the LMH0344, LMH0044, and LMH0074 in Pin Mode

2 Applications

  • ST 424, ST 292, ST 344, and ST 259 Serial Digital Interfaces(1)
  • Serial Digital Data Equalization and Reception
  • Data Recovery Equalization (1)
(1) Due to SMPTE naming convention, all SMPTE Engineering Documents will be numbered as a 2-letter prefix and a number. Documents and references with the same root number and year are functionally identical; for example ST 424-2006 and SMPTE 424M-2006 refer to the same document.

3 Description

The LMH0384 3-Gbps HD - SD SDI Extended Reach and Configurable Adaptive Cable Equalizer is designed to equalize data transmitted over cable (or any media with similar dispersive loss characteristics). The equalizer operates over a wide range of data rates from 125 Mbps to 2.97 Gbps and supports ST 424, ST 292, ST 344, and ST 259 standards.

The LMH0384 device includes active sensing features and design enhancements including longer cable equalization, lower output jitter, configurable pin mode and SPI modes, a power-saving sleep mode, and programmable output common-mode voltage and swing. The LMH0384 implements DC restoration to correctly handle pathological data conditions.

The LMH0384 includes an auto sleep mode to power down the device when no input signal is detected. Other features include separate carrier detect and output mute pins which may be tied together to mute the output when no input signal is present, and a programmable mute reference which may be used to mute the output at a selectable level of signal degradation.

The LMH0384 supports two modes of operation. In pin mode (non-SPI mode) the LMH0384 is footprint compatible with the LMH0344 and legacy SDI equalizers. In the optional SPI mode, the LMH0384 provides register access to all of its features along with a cable length indicator, programmable output common-mode voltage and swing, and launch amplitude optimization.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
LMH0384 WQFN (16) 4.00 mm × 4.00 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Functional Block Diagram

LMH0384 30083002.gif

4 Revision History

Changes from F Revision (April 2013) to G Revision

  • Added, updated, or renamed the following sections: Device Information Table, Pin Configuration and Functions; Specifications; Applications and Implementation; Detailed Description; Layout;Device and Documentation Support; Mechanical, Packaging, and Ordering InformationGo
  • Added "(logic zero)" to Pin 14 - MUTE - in Pin Descriptions – Pin Mode (non-SPI) / SPI_EN = GND / LMH0344 Compatible table.Go
  • Added note "Typical pullup or pulldown for digital pin is 100 kΩ. The tolerance is between 69K to 131K" to DC Electrical CharacteristicsGo

Changes from E Revision (April 2013) to F Revision

  • Changed layout of National Data Sheet to TI formatGo
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