LMH0318
- Supports ST 424(3G), 292(HD), 259(SD), MADI, and
DVB-ASI - Locks to rates 2.97 Gbps, 1.485 Gbps, or Divided
by 1.001 sub-rates, and DVB-ASI - 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 via SPI, Or SMBus Interface
- Single 2.5 V Supply Operation
- Small 4 mm × 4 mm 24-pin QFN Package
- -40°C to +85°C Operating Temperature Range
- Footprint compatible with LMH1218 for easy
upgrade to 12G
The LMH0318 is a 3 Gbps HD/SD SDI Reclocker with Integrated Cable Driver designed to drive serial video data compatible to SMPTE-SDI and DVB-ASI standards. The clock and data recovery circuit eliminates accumulated jitter and detects the incoming data rate without requiring an external reference clock. The integrated driver with 75 ohm and 50 ohm outputs enables multiple media options such as coax and FR4 PCB.
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 clockand- 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.
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提供 LMH0318 編程指南和 IBIS-AMI 模型。立即索取
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | LMH0318 3 Gbps HD/SD SDI Reclocker with Integrated Cable Driver datasheet | PDF | HTML | 2015/9/10 | ||
| 技術文章 | Three things to consider when upgrading to 4K Ultra HD 12G-SDI interfaces | PDF | HTML | 2016/4/13 | |||
| 使用指南 | LMH0318 Programming Guide | 2015/9/16 |
設計與開發
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LMH1218EVM — LMH1218 評估模組
LMH1218EVM 評估模組提供完整的高頻寬平台，可評估德州儀器具有整合式時脈重整器之 LMH1218 UHD 纜線驅動器的 SDI/UHD 與 10 GbE 訊號調整功能。LMH1218EVM 可用於標準合規測試、性能評估和初始系統原型設計。用於 LMH1218EVM 的 SMA 和 BNC 邊緣啟動連接器，可透過市售分接纜線、轉接器及電路板 (未隨附) 介接多種系統連接器類型。這種彈性的連線方式可在 TI 具有時脈重整器的 12G SDI 纜線驅動器，以及第三方 ASIC/FPGA 主機板之間，實現整合式系統層級測試。可使用圖形使用者介面管理 LMH1218 裝置暫存器。
此 EVM (...)
SIGCONARCHITECT-SDI-PROFILES — SigCon Architect SDI Profiles
SIGCONARCHITECT-WRTE — SigCon Architect With RTE v2.0.0.8
TIDA-03028 — 具有時鐘重整功能的 3G-SDI 中繼器參考設計
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WQFN (RTW) | 24 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。