LMH0394

ACTIVE

3G HD/SD SDI low power extended reach adaptive cable equalizer

Product details

Function Equalizer Supply voltage (V) 2.5 Power consumption (mW) 115 Data rate (max) (Mbps) 2970 Control interface Pin, SPI Operating temperature range (°C) -40 to 85
Function Equalizer Supply voltage (V) 2.5 Power consumption (mW) 115 Data rate (max) (Mbps) 2970 Control interface Pin, SPI Operating temperature range (°C) -40 to 85
WQFN (RUM) 16 16 mm² 4 x 4
  • ST 424, ST 292, ST 344, ST 259, and DVB-ASI
    Compliant(1)
  • Equalized Cable Lengths (Belden 1694A): 200
    Meters at 2.97 Gbps, 220 Meters at 1.485 Gbps,
    and 400 Meters at 270 Mbps
  • Ultra Low Power Consumption: 115 mW (Normal
    Operation)
  • Power-Save Mode With Auto Sleep Control
    (17-mW Typical Power Consumption in Power-
    Save Mode)
  • Designed for Crosstalk Immunity
  • Output De-Emphasis to Compensate for FR4 Board
    Trace Losses
  • Digital and Analog Programmable MUTEREF
    Threshold
  • Optional SPI Register Access
  • Input Data Rates: 125 Mbps to 2.97 Gbps
  • Internally Terminated 100-Ω LVDS Outputs With
    Programmable Output Common-Mode Voltage and
    Swing
  • Programmable Launch Amplitude Optimization
  • Cable Length Indicator
  • Single 2.5-V Supply Operation
  • 16-pin WQFN Package
  • Industrial Temperature Range: −40°C to +85°C
  • Footprint Compatible with the LMH0384 and also
    the LMH0344, LMH0044, and LMH0074 in Pin
    Mode
  • ST 424, ST 292, ST 344, ST 259, and DVB-ASI
    Compliant(1)
  • Equalized Cable Lengths (Belden 1694A): 200
    Meters at 2.97 Gbps, 220 Meters at 1.485 Gbps,
    and 400 Meters at 270 Mbps
  • Ultra Low Power Consumption: 115 mW (Normal
    Operation)
  • Power-Save Mode With Auto Sleep Control
    (17-mW Typical Power Consumption in Power-
    Save Mode)
  • Designed for Crosstalk Immunity
  • Output De-Emphasis to Compensate for FR4 Board
    Trace Losses
  • Digital and Analog Programmable MUTEREF
    Threshold
  • Optional SPI Register Access
  • Input Data Rates: 125 Mbps to 2.97 Gbps
  • Internally Terminated 100-Ω LVDS Outputs With
    Programmable Output Common-Mode Voltage and
    Swing
  • Programmable Launch Amplitude Optimization
  • Cable Length Indicator
  • Single 2.5-V Supply Operation
  • 16-pin WQFN Package
  • Industrial Temperature Range: −40°C to +85°C
  • Footprint Compatible with the LMH0384 and also
    the LMH0344, LMH0044, and LMH0074 in Pin
    Mode

The LMH0394 3-Gbps HD/SD SDI Low Power Extended Reach 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, ST 259, and DVB-ASI standards.

The LMH0394 provides extended cable reach with improved immunity to crosstalk and ultra low power consumption. The equalizer includes active sensing circuitry that ensures robust performance and enhanced immunity to variations in the input signal launch amplitude. The output driver offers programmable de-emphasis for up to 40” of FR4 trace losses. The LMH0394 includes power management to further reduce power consumption when no input signal is present.

The LMH0394 supports two modes of operation. In pin mode, the LMH0394 operates with control pins to set its operating state, and is footprint compatible with the LMH0384, LMH0344, and legacy SDI equalizers. In SPI mode, an optional SPI serial interface can be used to access and configure multiple LMH0394 devices in a daisy-chain configuration. This allows users to program the output common-mode voltage and swing, output de-emphasis level, input launch amplitude, and power management settings. Users may also access a cable length indicator and all pin mode features.

The LMH0394 3-Gbps HD/SD SDI Low Power Extended Reach 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, ST 259, and DVB-ASI standards.

The LMH0394 provides extended cable reach with improved immunity to crosstalk and ultra low power consumption. The equalizer includes active sensing circuitry that ensures robust performance and enhanced immunity to variations in the input signal launch amplitude. The output driver offers programmable de-emphasis for up to 40” of FR4 trace losses. The LMH0394 includes power management to further reduce power consumption when no input signal is present.

The LMH0394 supports two modes of operation. In pin mode, the LMH0394 operates with control pins to set its operating state, and is footprint compatible with the LMH0384, LMH0344, and legacy SDI equalizers. In SPI mode, an optional SPI serial interface can be used to access and configure multiple LMH0394 devices in a daisy-chain configuration. This allows users to program the output common-mode voltage and swing, output de-emphasis level, input launch amplitude, and power management settings. Users may also access a cable length indicator and all pin mode features.

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Technical documentation

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Type Title Date
* Data sheet LMH0394 3G HD/SD SDI Low Power Extended Reach Adaptive Cable Equalizer datasheet (Rev. M) PDF | HTML 31 Jul 2015
Application note 3G-SDI Cable Equalizer Compatibility Guide – TI / MACOM 13 Sep 2017
Application note 3G-SDI Cable Equalizer Compatibility Guide – TI / Semtech 13 Sep 2017
Selection guide Broadcast and Professional Video Interface Solutions (Rev. E) 05 Apr 2017
Application note AN-1943 Understanding Serial Digital Video Bit Rates (Rev. A) 26 Apr 2013
Application note AN-2145 Power Considerations for SDI Products (Rev. B) 26 Apr 2013
Application note AN-2146 Power Design for SDI and Other Noise-Sensitive Devices (Rev. A) 26 Apr 2013
EVM User's guide SD394EVK - Evaluation Board for LMH0394 Cable Equalizer 27 Jan 2012
EVM User's guide SD394SPIEVK - Evaluation Board for LMH0394 Cable Equalizer 27 Jan 2012
Application note High-Speed Board Layout Challenges in FPGA/SDI Sub-Systems 12 Nov 2009
Design guide Broadcast Video Owner's Manual 17 Nov 2006

Design & development

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Evaluation board

SD394EVK — SD394EVK - Evaluation Board for LMH0394 Cable Equalizer

The SD394EVK is an evaluation board designed to demonstrate the performance and capabilities of the LMH0394 3G HD/SD SDI Low Power Extended Reach Adaptive Cable Equalizer.

The board accepts 75Ω input signals conforming to the SMPTE 424M, SMPTE 292M, or SMPTE 259M standards. The LMH0394 will restore (...)

User guide: PDF
Not available on TI.com
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Simulation tool

TINA-TI — SPICE-based analog simulation program

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 (...)
User guide: PDF
Package Pins CAD symbols, footprints & 3D models
WQFN (RUM) 16 Ultra Librarian

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