LMH0318_15 Datasheet, PDF (3/57 Pages) Texas Instruments – LMH0318 3 Gbps HD/SD SDI Reclocker with Integrated Cable Driver

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LMH0318
SNLS508 – SEPTEMBER 2015
5 Description continued
The integrated 2-to-1 MUX on the input of the LMH0318 enables selection between two video sources, while the
programmable equalizer compensates for the PC board loss to extend signal reach. With a wide range clock-
and-data recovery (CDR) circuit, the on-chip reclocker automatically detects and locks to serial data from 270
Mbps to 2.97 Gbps without the need for an external reference clock and loop filter component, thereby
simplifying board design and lowering system cost. The reclocked serial data can be routed to either the 75 Ω or
50 Ω transmitter output, or both simultaneously (1-to-2 fanout mode). The output voltage swing is compatible to
ST 424, 344, 292, and 259 standards.
A non-disruptive eye monitor allows for real-time measurement of serial data to simplify system startup or field
tuning. The LMH0318 is pin compatible with the LMH1218, 12 Gbps Cable Driver with Integrated Reclocker.
6 Pin Configuration and Functions
24-Pin WQFN
Package RTWA0024A
(Top View)
VDD 7
IN1+ 8
IN1- ₉
VSS 10
IN0+ 11
IN0- 12
DAP = GND
24 VSS
23 OUT1+
22 OUT1-
21 VDD
20 OUT0+
19 OUT0-
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