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LMH0387

ACTIVE

3G HD/SD SDI configurable I/O adaptive cable equalizer / cable driver

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Data sheet

LMH0387

ACTIVE
Data sheet Order now

Product details

Function Config I/O Power consumption (mW) 235 Data rate (max) (Mbps) 2970 Control interface Pin, SPI Operating temperature range (°C) -40 to 85
Function Config I/O Power consumption (mW) 235 Data rate (max) (Mbps) 2970 Control interface Pin, SPI Operating temperature range (°C) -40 to 85
TLGA (NPD) 48 49 mm² (7 mm × 7 mm)
  • ST 424, ST 292, ST 344, and ST 259 compliant(1)
  • Supports DVB-ASI at 270Mbps
  • Data rates: 125Mbps to 2.97Gbps when receiving (DC to 2.97Gbps when driving cable)
  • Equalizes up to 120 meters of Belden 1694A at 2.97Gbps, up to 200 Meters of Belden 1694A at 1.485Gbps, or up to 400 meters of Belden 1694A at 270Mbps
  • Integrated return loss network (no external components required)
  • Power saving modes
  • Cable driver selectable slew rate
  • Internally terminated 100Ω LVDS receiver outputs with programmable common mode voltage and swing
  • Programmable launch amplitude optimization for receiver
  • Cable length indication
  • Single 3.3V supply operation
  • 48-pin laminate TLGA package
  • Industrial temperature range: −40°C to 85°C

(1)Due to SMPTE naming convention, all SMPTE Engineering Documents are numbered as a two-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 see the same document.
  • ST 424, ST 292, ST 344, and ST 259 compliant(1)
  • Supports DVB-ASI at 270Mbps
  • Data rates: 125Mbps to 2.97Gbps when receiving (DC to 2.97Gbps when driving cable)
  • Equalizes up to 120 meters of Belden 1694A at 2.97Gbps, up to 200 Meters of Belden 1694A at 1.485Gbps, or up to 400 meters of Belden 1694A at 270Mbps
  • Integrated return loss network (no external components required)
  • Power saving modes
  • Cable driver selectable slew rate
  • Internally terminated 100Ω LVDS receiver outputs with programmable common mode voltage and swing
  • Programmable launch amplitude optimization for receiver
  • Cable length indication
  • Single 3.3V supply operation
  • 48-pin laminate TLGA package
  • Industrial temperature range: −40°C to 85°C

(1)Due to SMPTE naming convention, all SMPTE Engineering Documents are numbered as a two-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 see the same document.

The LMH0387 3Gbps HD/SD SDI configurable I/O adaptive cable equalizer/cable driver provides a single chip interface to a BNC. The device can be configured either in the input mode as an equalizer to receive data over coaxial cable or in the output mode as a cable driver to transmit data over coaxial cable. The same I/O pin is used both for the input and the output functions of the device, allowing the use the flexibility to use a BNC attached to the device as either an input or an output.

The device operates over a wide range of data rates from 125Mbps to 2.97Gbps (DC to 2.97Gbps when driving cable) and supports ST 424, ST 292, ST 344, and ST 259. The return loss network is integrated within the device so no external components are required to meet the SMPTE return loss specification. The LMH0387 offers designers flexibility in system design and quicker time to market.

In the input mode, the LMH0387 features include a power-saving sleep mode, programmable output common mode voltage and swing, cable length indication, launch amplitude optimization, input signal detection, and an SPI. In the output mode, the LMH0387 features include two selectable slew rates for ST 424 / 292 and ST 259 compliance, and output driver power-down control.

The device is available in a 7mm × 7mm 48-pin laminate thin laminate grid array (TLGA) package.

The LMH0387 3Gbps HD/SD SDI configurable I/O adaptive cable equalizer/cable driver provides a single chip interface to a BNC. The device can be configured either in the input mode as an equalizer to receive data over coaxial cable or in the output mode as a cable driver to transmit data over coaxial cable. The same I/O pin is used both for the input and the output functions of the device, allowing the use the flexibility to use a BNC attached to the device as either an input or an output.

The device operates over a wide range of data rates from 125Mbps to 2.97Gbps (DC to 2.97Gbps when driving cable) and supports ST 424, ST 292, ST 344, and ST 259. The return loss network is integrated within the device so no external components are required to meet the SMPTE return loss specification. The LMH0387 offers designers flexibility in system design and quicker time to market.

In the input mode, the LMH0387 features include a power-saving sleep mode, programmable output common mode voltage and swing, cable length indication, launch amplitude optimization, input signal detection, and an SPI. In the output mode, the LMH0387 features include two selectable slew rates for ST 424 / 292 and ST 259 compliance, and output driver power-down control.

The device is available in a 7mm × 7mm 48-pin laminate thin laminate grid array (TLGA) package.
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Top documentation Type Title Format options Date
* Data sheet LMH0387 3Gbps HD/SD SDI Configurable I/O Adaptive Cable Equalizer/Cable Driver datasheet (Rev. I) PDF | HTML Jun 1, 2026
Application note Simplifying 4K SDI Video Design with a Bidrectional I/O Oct 31, 2017
Selection guide Broadcast and Professional Video Interface Solutions (Rev. E) PDF | HTML Apr 5, 2017
Application note AN-2156 Configuring the LMH0387 for an Equalizer-Only Application (Rev. A) Apr 26, 2013
Application note AN-2145 Power Considerations for SDI Products (Rev. B) Apr 26, 2013
Application note AN-2146 Power Design for SDI and Other Noise-Sensitive Devices (Rev. A) Apr 26, 2013
Application note AN-1943 Understanding Serial Digital Video Bit Rates (Rev. A) Apr 26, 2013
User guide 3 Gbps HD SD SDI Configurable IO Adaptive Equalizer Driver Eval Bd User Guide Jan 26, 2012
Application note High-Speed Board Layout Challenges in FPGA/SDI Sub-Systems Nov 12, 2009
Design guide Broadcast Video Owner's Manual Nov 17, 2006

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Simulation model

LMH0387 IBIS Model

SNLM197.ZIP (1588 KB) - IBIS model
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TLGA (NPD) 48 Ultra Librarian
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