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Circuitos integrados de interfaz digital serie (SDI)

LMH1208

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Controlador de cable dual UHD-SDI de 12 G

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LMH1208

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Detalles del producto

Function Cable driver Supply voltage (V) 2.5 Power consumption (mW) 255 Data rate (max) (Mbps) 11880 Control interface Pin, SMBus, SPI Operating temperature range (°C) -40 to 85
Function Cable driver Supply voltage (V) 2.5 Power consumption (mW) 255 Data rate (max) (Mbps) 11880 Control interface Pin, SMBus, SPI Operating temperature range (°C) -40 to 85
WQFN (RTV) 32 25 mm² 5 x 5
  • Supports ST-2082-1 (12G), ST-2081-1 (6G), ST-424 (3G), ST-292 (HD), and ST-259 (SD)
  • Compatible with DVB-ASI and AES10 (MADI)
  • Dual differential output cable drivers
  • On-chip 75-Ω termination and return loss compensation network
  • Host-side equalized 100-Ω loop-back output
  • Programmable slew rate control on 75-Ω outputs
  • Programmable pre-emphasis and output amplitude on 75-Ω outputs
  • Programmable de-emphasis and output amplitude on 100-Ω output
  • Polarity inversion on 75-Ω and 100-Ω outputs
  • Automatic power save in absence of input signal
    • Power consumption: 25 mW (Typical)
  • Power-down control through ENABLE pin
  • Single 2.5-V supply
    • Power consumption: 200 mW (typical)
  • Programmable through pins, SPI, or SMBus interface
  • –40°C to +85°C operating temperature range
  • 5-mm × 5-mm, 32-pin WQFN package
  • Supports ST-2082-1 (12G), ST-2081-1 (6G), ST-424 (3G), ST-292 (HD), and ST-259 (SD)
  • Compatible with DVB-ASI and AES10 (MADI)
  • Dual differential output cable drivers
  • On-chip 75-Ω termination and return loss compensation network
  • Host-side equalized 100-Ω loop-back output
  • Programmable slew rate control on 75-Ω outputs
  • Programmable pre-emphasis and output amplitude on 75-Ω outputs
  • Programmable de-emphasis and output amplitude on 100-Ω output
  • Polarity inversion on 75-Ω and 100-Ω outputs
  • Automatic power save in absence of input signal
    • Power consumption: 25 mW (Typical)
  • Power-down control through ENABLE pin
  • Single 2.5-V supply
    • Power consumption: 200 mW (typical)
  • Programmable through pins, SPI, or SMBus interface
  • –40°C to +85°C operating temperature range
  • 5-mm × 5-mm, 32-pin WQFN package

LMH1208 device is a 12G UHD-SDI low power dual output cable driver. It supports SMPTE video rates up to 11.88 Gbps, enabling UHD video for 4K/8K applications. The additional equalized 100-Ω driver output on the host-side can be used for monitoring or signal distribution purposes.

The programmable PCB input equalizer provides high frequency boost to reduce inter symbol interference (ISI) induced by PCB board trace. The integrated 75-Ω termination and return loss network at both cable driver outputs facilitate overall system design in meeting stringent SMPTE return loss requirements.

Input Signal Detect determines the presence of a valid signal at the input of the cable driver. This sensing feature may be used to alert the user of a system fault and activate a Power Save Mode, reducing the power consumption of the cable driver. The LMH1208 provides selectable slew rates for data rates up to 11.88 Gbps. The output slew rate and amplitude can be controlled by pin, SPI, or SMBus control.

The LMH1208 is powered from a single 2.5-V supply. It is offered in a small footprint 5 mm × 5 mm 32-pin WQFN package. The LMH1208 is pin compatible with the LMH1228 (12G Dual Cable Driver with Integrated Reclocker).

LMH1208 device is a 12G UHD-SDI low power dual output cable driver. It supports SMPTE video rates up to 11.88 Gbps, enabling UHD video for 4K/8K applications. The additional equalized 100-Ω driver output on the host-side can be used for monitoring or signal distribution purposes.

The programmable PCB input equalizer provides high frequency boost to reduce inter symbol interference (ISI) induced by PCB board trace. The integrated 75-Ω termination and return loss network at both cable driver outputs facilitate overall system design in meeting stringent SMPTE return loss requirements.

Input Signal Detect determines the presence of a valid signal at the input of the cable driver. This sensing feature may be used to alert the user of a system fault and activate a Power Save Mode, reducing the power consumption of the cable driver. The LMH1208 provides selectable slew rates for data rates up to 11.88 Gbps. The output slew rate and amplitude can be controlled by pin, SPI, or SMBus control.

The LMH1208 is powered from a single 2.5-V supply. It is offered in a small footprint 5 mm × 5 mm 32-pin WQFN package. The LMH1208 is pin compatible with the LMH1228 (12G Dual Cable Driver with Integrated Reclocker).
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Más información

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Documentación técnica

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* Data sheet LMH1208 12G UHD-SDI Dual Output Cable Driver datasheet (Rev. C) PDF | HTML 12 may 2020
Application note LMH121x 12G SDI PCB Layout Guidelines 19 feb 2020
Application note LMH12xx MADI Compatibility Application Note PDF | HTML 30 ago 2018
Application note Simplifying 4K SDI Video Design with a Bidrectional I/O 31 oct 2017
Technical article Three reasons why a bidirectional I/O will simplify your next 4K video design PDF | HTML 06 sep 2017

Diseño y desarrollo

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Placa de evaluación

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Herramienta de simulación

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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 (...)
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Herramienta de simulación

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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 (...)
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WQFN (RTV) 32 Ver opciones
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