GS3490
The GS3490 features integrated adaptive cable equalizerand cable driver functionality. The GS3490 can be field-configured as a SMPTE compliant cable equalizer or a SMPTE compliant cable driver.
The GS3490 is optimized for applications with limited I/O space. With its configurable EQ and Cable driver functionality, the GS3490 can be utilized as a single-device solution in applications where the interface connector can be configured as either an input or output.
The GS3490's cable equalizer is optimized for operation at 2.97Gb/s, 1.485Gb/s and 270Mb/s while providing typical cable reach of 140m at 2.97Gb/s, 250m at 1.485Gb/s and 550m at 270Mb/s.
In cable driver mode, the dual slew rate capability provides compatibility to SMPTE ST 259, SMPTE ST 292 and SMPTE ST 424 interfaces.
Features
- Connection to a single BNC connector as an adaptive cable equalizer or cable driver
- Multi-rate operation from 125Mb/s to 2.97Gb/s (performance optimized for SMPTE ST 424, SMPTE ST 292 and SMPTE ST 259 data rates)
- Supports DVB-ASI at 270Mb/s
- Integrated 100ohm differential digital data input/output termination
- Low power operation:
- 206mW typical power consumption in EQ mode
- 190mW typical power consumption in CD mode
- Operating temperature range: -40°C to +85°C
- 5mm x 5mm QFN package
- SMPTE ST 424, SMPTE ST 292 and SMPTE ST 259 interfaces requiring switching between cable equalizing or cable driving functionality
アプリケーション
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(-40°C to +85°C / 4000 cycles)
(50°C, 4000 Hrs)
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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.
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