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LMH0384

ACTIVE

3G HD/SD SDI extended reach and configurable adaptive cable equalizer

Product details

Function Equalizer Supply voltage (V) 3.3 Power consumption (mW) 230 Data rate (max) (Mbps) 2970 Control interface Pin, SPI Operating temperature range (°C) -40 to 85
Function Equalizer Supply voltage (V) 3.3 Power consumption (mW) 230 Data rate (max) (Mbps) 2970 Control interface Pin, SPI Operating temperature range (°C) -40 to 85
WQFN (RUM) 16 16 mm² 4 x 4
  • Compliant With ST 424, ST 292, ST 344, and ST
    259
  • 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
  • Compliant With ST 424, ST 292, ST 344, and ST
    259
  • 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

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.

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.

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Technical documentation

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Type Title Date
* Data sheet LMH0384 3-Gbps HD - SD SDI Extended Reach and Configurable Adaptive Cable Equalizer datasheet (Rev. G) PDF | HTML 30 Jun 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-1972 Board Layout Challenges in Serial Digital Interface (Rev. C) 26 Apr 2013
Application note AN-1988 LMH0340 / LMH0341 SerDes Family LVDS Timing Overview (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
Application note Replacing the CLC012 Adaptive Cable Equalizer with the LMH0074 (Rev. A) 26 Apr 2013
Application note Replacing the CLC014 Adaptive Cable Equalizer with the LMH0074 (Rev. A) 26 Apr 2013
User guide SD384SPIEVK - Eval Bd for LMH0384 Cable Equalizer with SPI GUI User Guide 27 Jan 2012
EVM User's guide SD384EVK - Evaluation Board for LMH0384 Cable Equalizer User Guide 26 Jan 2012
Application note High-Speed Board Layout Challenges in FPGA/SDI Sub-Systems 12 Nov 2009
Application note Getting Signal Launch Right for High Speed Sub-systems 03 Aug 2009
Design guide Broadcast Video Owner's Manual 17 Nov 2006

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