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
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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