GS2974A
This product has reached its End of Life. Its data sheet is for reference only.
Please use GS2994, GS3440 and GS3140 for new designs.
The GS2974A is a high-speed BiCMOS integrated circuit designed to equalize and restore signals received over 75Ω co-axial cable.
The GS2974A is designed to support SMPTE 424M, SMPTE 292M and SMPTE 259M, and is optimized for performance at 1.485Gb/s and 2.97Gb/s.
The GS2974A features DC restoration to compensate for the DC content of SMPTE pathological test patterns.
A voltage programmable mute threshold (MCLADJ), applicable for HD and SD mode (refer to Section 5.2), is included to allow muting of the GS2974A output when an approximate selected cable length is reached for SMPTE 259M signals. This feature allows the GS2974A to distinguish between low amplitude SD-SDI signals and noise at the input of the device. The serial digital outputs of the GS2974A may be forced to a mute state by applying a voltage to the MUTE pin.
Power consumption is typically 215mW using a 3.3V power supply. The GS2974A is lead-free, and the encapsulation compound does not contain halogenated flame retardant.
This component and all homogeneous subcomponents are RoHS compliant.
功能
- 兼容 SMPTE 424M、SMPTE 292M 和 SMPTE 259M
- 自动电缆均衡
- Multi-standard operation from 143Mb/s to 2.97Gb/s
- 支持速率达 270 Mb/s 的 DVB-ASI
- Small footprint (4mm x 4mm)
- 无铅且符合 RoHS 标准
- 手动旁路（适用于具有缓慢上升/下降时间的低数据速率）
- Performance optimized for 1.485Gb/s and 2.97Gb/s
- Typical equalized length of Belden 1694A cable: 120m at 2.97Gb/s, 200m at 1.485Gb/s, and 350m at 270Mb/s
- 50Ohm differential output (internal 50Ohm pull-ups)
- Programmable mute based on max cable length adjust
- 3.3 V 单电源运行
- Operating temperature range: 0°C to +70°C
- SMPTE 424M, SMPTE 292M and SMPTE 259M Coaxial Cable Serial Digital Interfaces
应用
订购代码
- GS2974ACTE3: Lead-Free, RoHS Compliant, Tape and Reel-250 Pieces
- GS2974ACNTE3Z: Lead-Free, RoHS Compliant, Tape and Reel-2500 Pieces
- GS2974ACNE3: Lead-Free, RoHS Compliant, Tray-490 Pieces
Datasheets & Documentation
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资源
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无论您是在体育场的巨型屏幕上观看棒球比赛的动作回放、在大屏幕电视上观看电影，还是在笔记本电脑上播放视频，都期望获得高质量的视听 (AV) 体验。超高清串行数字接口 (UHD-SDI) 和高清多媒体接口 (HDMI) 是数字 AV 传输的两个标准。UHD-SDI 对通过同轴电缆或光纤传输未压缩和未加密的数字 AV 信号加以标准化。HDMI 是一种数字接口，用于将高清、高速数字多轨音频和未压缩视频信号从 HDMI 兼容源传输到视听显示器。尽管二者都可以将超高清 AV 信号从信号源传输到显示器，但 HDMI 更适合连接电脑、游戏机、蓝光/DVD 播放器、电视、投影仪等消费电子产品。 UHD-SDI 是专业室内/室外视频制作和电视广播等高端应用的首选，因为它支持远距离传输，并借助电缆两端的物理锁定机制实现可靠连接。UHD-SDI 同轴电缆可以将信号传输远达 300 英尺，而 HDMI 电缆即使在 50 英尺以内也会出现信号过渡衰减的问题。这两种接口可以通过 HDMI-SDI 或 SDI-HDMI 转换器一起使用。例如，如图 1 所示，HDMI 显示器用于 SDI 流的置信度监控，从而无需使用经过专门校准的 SDI 专用显示器。
Circuit Protection for HDMI-SDI/SDI-HDMI…
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