LMH1218
- Supports ST-2082 (Proposed), ST-2081 (Proposed), SMPTE 424M, 344M, 292M, 259M, DVB-ASI, SFF-8431 (SFP+) and 10GbE Ethernet for SMPTE 2022-5/6
- Locks to Rates 11.88 Gbps, 5.94 Gbps, 2.97 Gbps, 1.485 Gbps, or Divided by 1.001 Sub-Rates, DVB-ASI (270 Mbps) and 10GbE (10.3125 Gbps)
- Reference-Free Operation With Fast Lock Time Covering All Supported or Selected Data Rates
- 75-Ω and 100-Ω Transmitter Outputs
- Integrated 2:1 Mux Input, 1:2 Demux/Fanout Outputs
- Automatic Slew Rate Based on Input Rate Detect
- On-Chip Eye Monitor
- Low 300-mW Power Consumption With Automatic Power Down on Loss of Input Signal
- Programmable Through SPI or SMBus Interface
- Single 2.5-V Supply Operation
- Small 4-mm × 4-mm 24-Pin WQFN Package
- –40°C to +85°C Operating Temperature Range
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.
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技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | LMH1218 Low Power Ultra HD Cable Driver With Integrated Reclocker datasheet (Rev. E) | PDF | HTML | 2018年 6月 12日 |
Application note | LMH121x 12G SDI PCB Layout Guidelines | 2020年 2月 19日 | ||
Application note | LMH12xx MADI Compatibility Application Note | PDF | HTML | 2018年 8月 30日 | |
User guide | LMH1218 Programming Guide (Rev. B) | 2018年 6月 12日 | ||
Technical article | Three reasons why a bidirectional I/O will simplify your next 4K video design | PDF | HTML | 2017年 9月 6日 | |
Technical article | Three things to consider when upgrading to 4K Ultra HD 12G-SDI interfaces | PDF | HTML | 2016年 4月 13日 | |
Technical article | SigCon Architect: The keys to your high-speed design | PDF | HTML | 2015年 10月 27日 | |
Application note | SDI Video Bit Rate Calculation | 2015年 4月 10日 | ||
EVM User's guide | LMH1218EVM User's Guide (Rev. A) | 2015年 3月 24日 |
設計與開發
如需其他條款或必要資源,請按一下下方的任何標題以檢視詳細頁面 (如有)。
LMH1218EVM — LMH1218 評估模組
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 (...)
SIGCONARCHITECT-WRTE — SigCon Architect With RTE v2.0.0.8
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PCIe、SAS & SATA IC
乙太網路重定時器、訊號調節器和多工器緩衝器
序列數位介面 (SDI) IC
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PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
TINA-TI — 基於 SPICE 的類比模擬程式
TIDA-00428 — 具有時鐘重整功能的 12 Gbps SDI 和 IP 視頻中繼器
封裝 | 引腳 | 下載 |
---|---|---|
WQFN (RTW) | 24 | 檢視選項 |
訂購與品質
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