Semtech GS3490

Configurable 3G-SDI Adaptive Cable Equalizer/Cable Driver

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

Applications

SMPTE ST 424, SMPTE ST 292 and SMPTE ST 259 interfaces requiring switching between cable equalizing or cable driving functionality.