The LMH1219 is a low-power, dual-input and dual-output, adaptive equalizer with
integrated reclocker. It supports SMPTE video rates up to 11.88 Gbps and 10 GbE video over IP,
enabling UHD video for 4K/8K applications. An extended reach adaptive cable equalizer at IN0 is
designed to equalize data transmitted over 75 Ω coaxial cable and operates over a wide range of
data rates from 125 Mbps to 11.88 Gbps. An adaptive board trace equalizer at IN1 is SFF-8431
compatible and supports both SMPTE and 10 GbE data rates.
The integrated reclocker attenuates high frequency jitter and provides the best signal
integrity. High input jitter tolerance of the reclocker improves timing margin. The reclocker has a
built-in loop filter, and operates without the need of a precision input reference clock. A
non-disruptive eye monitor allows real time measurement of the serial data to simplify system debug
and accelerate board bring-up.
The integrated 2:1 Mux and 1:2 Fanout provide flexibility for multiple video signals. The
output drivers offer programmable de-emphasis to compensate board trace losses at its outputs. The
integrated return loss network meets stringent SMPTE specifications across all data rates. The
typical power consumption of LMH1219 is 250 mW. In the absence of input signal, power is further
reduced to 16 mW.
The LMH1219 is pin compatible to LMH1226 (12G UHD reclocker) and LMH0324 (3G adaptive
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