Texas Instruments LMH1218 低功耗超高清电缆驱动器
德州仪器 LMH1218 是一款集成时钟恢复器的低功耗超高清电缆驱动器。该时钟恢复器用于驱动兼容 SMPTE-SDI、SMPTE 2022-5/6、10GbE 以太网和 DVB-ASI 标准的串行视频数据。这一驱动器支持高达 11.88Gbps 的数据传输率,可在 4K/8K 应用中实现超高清视频显示。LMH1218 具有 75Ω 和 50Ω 的发送器输出,支持诸如同轴电缆、光纤及 FR-4 PCB 等多种介质选项。LMH1218 输入端集成了 2 对 1 多路复用器,支持在两个视频源之间进行选择。可编程均衡器对 PC 板损耗进行补偿,以扩大信号范围。该片上时钟恢复器借助宽范围时钟和数据恢复(CDR)电路,在无需外部参考时钟和环路滤波器组件的情况下,自动检测并锁定 270Mbps 至 11.88Gbps 的串行数据,从而简化了电路板设计并降低了系统成本。特性
- 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 11.88Gbps, 5.94Gbps, 2.97Gbps, 1.485Gbps, or Divided by 1.001 sub-rates, DVB-ASI (270Mbps) and 10GbE (10.3125Gbps)
- Reference-free operation with fast Lock time covering all supported or selected data rates
- 75Ω and 100Ω transmitter outputs
- Integrated 2:1 input, 1:2 Demux/Fanout outputs
- Automatic slew rate based on input rate detect
- On-chip eye monitor
- Low 300mW power consumption with automatic power down on loss of input signal
- Programmable via SPI, Or SMBus interface
- Single 2.5V supply operation
- Small 4mm × 4mm 24-pin QFN package
- -40°C to +85°C operating temperature range
应用
- UHDTV/4K/8K/HDTV/SDTV video
- Digital video routers and switches
- Digital video processing and editing
- DVB-ASI and distribution amplifiers
- 10GbE for SMPTE 2022-5/6
Functional Block Diagram
TI Reference Designs Library
发布日期: 2015-06-24
| 更新日期: 2022-03-11
