GS12241
The GS12241 is a low-power, multi-rate re-timing Cable Equalizer supporting rates up to 12G UHD-SDI. It is designed to equalize and restore signals received over 80m coaxial cable at 12G, compensate for DC content of SMPTE pathological signals, and re-time the incoming data. The device supports SMPTE ST 2082-1 (12G UHD-SDI), ST2081-1 (6G UHD-SDI), ST 424 (3G SDI), ST 292-1 (HD-SDI), and ST 259 (SD-SDI) signals and is optimized for performance at 11.88Gbps. In addition to standard SMPTE rates, the device also supports re-timing of DVB-ASI at 270Mbps, and MADI at 125Mbps. The two trace drivers have highly configurable pre-emphasis and swing controls to compensate for long trace and connector losses.
Features
- 75Ω cable input interface with on-chip termination
- SMPTE ST 2082-1, ST 2081-1, ST 424, ST 292-1 and ST 259 compliant input/output
- Multi-standard operation from 1Mb/s to 11.88Gb/s
- In addition to standard SMPTE rates, the device also supports re-timing of DVB-ASI at 270Mb/s, and MADI at 125Mb/s
- 3D Input Signal Eye Monitor
- PRBS generator and checker
- Automatic cable equalization—typical equalized cable lengths of Belden 1694A cable:
- 80m at 11.88Gbps
- 100m at 5.94Gbps
- 190m at 2.97Gbps
- 260m at 1.485Gbps
- 450m at 270Mbps and 125Mbps
- Cable equalizer mode features:
- Automatic power down on loss of signal
- Programmable carrier detect with squelch threshold adjustment
- Programmable launch swing compensation for non-compliant source
- Manual and automatic cable equalizer bypass
- Trace driver features:
- Integrated 100Ω, differential output termination
- Extends output DC-coupling support with 1.2V to 2.5V output supply range
- Trace driver data output pre-emphasis to compensate for up to 20” FR4 at 11.88Gb/s
- Manual or automatic re-timer bypass
- Manual or automatic mute or disable on LOS
- CDR features:
- Manual or automatic rate modes
- Wide Loop bandwidth control
- Re-timing at the following data rates: 125Mbps, 270Mbps, 1.485Gbps, 2.97Gbps, 5.94Gbps, and 11.88Gbps—this includes the f/1.001 rates
- Single 1.8V power supply for analog and digital core
- GSPI serial control and monitoring interface
- Four configurable GPIO pins for control or status monitoring
- Wide operating temperature range: -40ºC to +85ºC
- Small 6mm x 4mm 40-pin QFN
- Pin compatible with the GS12141, GS12142, and GS3241
- Pb-free/Halogen-free/RoHS and WEEE compliant package
- Next Generation 3D / 2D HFR HDTV and 2K D-Cinema, UHDTV1 and 4K D-Cinema end-equipment: Cameras, Monitors, Switchers, etc.
- Next Generation 3G, 6G, and 12G UHD-SDI infrastructures designed in support of UHDTV1, UHDTV2, 4K D-Cinema and 3D HFR and HDR production image formats.
アプリケーション
Pb(Lead)-Free/RoHS-Green Info
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関連情報
To see more videos Videos
Whether you are watching an action replay of a baseball game on a giant screen at a stadium, a movie on your large-screen TV or streaming a video on your laptop computer, a high-quality audiovisual (AV) experience is always expected. Ultra-High-Definition Serial Digital Interface (UHD-SDI) and High-Definition Multimedia Interface (HDMI) are two standards for digital AV transmission. UHD-SDI standardizes the transmission of uncompressed and unencrypted digital AV signals over coaxial or fiber optic cables. HDMI is a digital interface for transmitting high-definition, high-speed digital multi-track audio and uncompressed video signals from HDMI-compliant sources to AV displays. Even though they both can transport ultra-high-definition AV signals from a source to a display, HDMI is preferred to connect consumer gadgets such as computers, gaming consoles, Blu-ray/DVD players, televisions, projectors, etc. UHD-SDI is preferred for high-end applications such as professional indoor/outdoor video production and television broadcasts because it supports long-range transmission and a rugged connection with the help of a physical lock mechanism at each end of the cable. UHD-SDI coaxial cable can transfer signals up to 300 feet, whereas HDMI cables struggle with excessive signal degradation even within 50 feet. These two interfaces can be used together via an HDMI-SDI or SDI-HDMI converter. For example, as shown in figure 1, an HDMI display would be used for confidence monitoring of an SDI stream to avoid the need to use specially calibrated SDI-specific displays.
Circuit Protection for HDMI-SDI/SDI-HDMI…
今すぐ読む
I designed my first product using the Serial Digital Interface (SDI) back in 1996, and little did I know that this fledgling coax-based video interface standard would dominate my career for the next 20+ years. Back then, SDI was limited to carrying Standard Definition (SD) digital video at 270 Megabits per second (Mbps), but would evolve to higher and higher data rates to carry High Definition 720p, 1080i and 1080p, and most recently 4K Ultra High Definition (UHD) video, at cable lengths that were not thought possible. The convenience of a low cost single conductor coaxial copper cable, capable of carrying 4K video up to 100m has meant that SDI has become the de facto AV connectivity of choice in markets such as broadcast, Pro AV, medical and surveillance.
今すぐ読む