The LMH1218 device is a low-power cable driver with integrated reclocker to drive serial video data compatible to SMPTE-SDI, SMPTE 2022-5/6, 10GbE Ethernet, and DVB-ASI standards. The LMH1218 supports up to 11.88 Gbps to enable Ultra High Definition Video for 4K/8K applications. With 75-Ω and 50-Ω transmitter outputs, the LMH1218 enables multiple media options such as coax, fiber, and FR-4 PCB.
The integrated 2-to-1 MUX on the input of the LMH1218 enables selection between two video sources, while the programmable equalizer compensates for the printed-circuit 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 11.88 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 SFF-8431 (SFP+), ST-2082/1 (Proposed), SMPTE 424M, 344M, 292M, and 259M standards.
A non-disruptive eye monitor allows for real-time measurement of serial data to simplify system start-up or field tuning. The LMH1218 can be programmed using SPI or SMBus Interface.
The LMH1218 IBIS-AMI model is available. Request now
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | LMH1218 Low Power Ultra HD Cable Driver With Integrated Reclocker datasheet (Rev. E) | PDF | HTML | Jun 12, 2018 |
| Application note | LMH121x 12G SDI PCB Layout Guidelines | Feb 19, 2020 | ||
| Application note | LMH12xx MADI Compatibility Application Note | PDF | HTML | Aug 30, 2018 | |
| User guide | LMH1218 Programming Guide (Rev. B) | Jun 12, 2018 | ||
| Technical article | Three reasons why a bidirectional I/O will simplify your next 4K video design | PDF | HTML | Sep 6, 2017 | |
| Technical article | Three things to consider when upgrading to 4K Ultra HD 12G-SDI interfaces | PDF | HTML | Apr 13, 2016 | |
| Technical article | SigCon Architect: The keys to your high-speed design | PDF | HTML | Oct 27, 2015 | |
| Application note | SDI Video Bit Rate Calculation | Apr 10, 2015 |
For additional terms or required resources, click any title below to view the detail page where available.
The LMH1218EVM evaluation module provides a complete high bandwidth platform to evaluate the SDI/UHD and 10 GbE signal conditioning features of the Texas Instruments LMH1218 UHD Cable Driver with Integrated Reclocker. The LMH1218EVM can be used for standard compliance testing, performance (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| WQFN (RTW) | 24 | Ultra Librarian |
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