
Semtech Corporation
Description
The GS2989 is a high-speed BiCMOS integrated circuit designed to drive one to four 75Ω coaxial cables.
The GS2989 may drive data rates up to 2.97Gb/s and provides two selectable slew rates in order to achieve compliance to SMPTE 424M, SMPTE 292M and SMPTE 259M.
The GS2989 accepts industry-standard differential input levels including LVPECL and CML.
FEATUREs
• SMPTE 424M, SMPTE 292M and SMPTE 259M
compliant
• Supports DVB-ASI at 270Mb/s
• Supports data rates from 270Mb/s to 2.97Gb/s
• Wide common-mode range input buffer
✦ 100mV sensitivity
✦ supports DC-coupling to industry-standard
differential logic
✦ on-chip 100Ω differential data input termination
• Input signal trace equalization
• Dual differential coaxial-cable-driving outputs
✦ selectable slew rates
✦ adjustable output swing from 500mVpp to
1800mVpp
✦ independent DISABLE controls for each output
• Robust output signal presence function
• Excellent output eye quality
• Power supply operation at 3.3V or 2.5V
• 110mW power consumption (2.5V supply)
• Operating temperature range: -40°C to +85°C
• Small footprint QFN package (4mm x 4mm)
✦ new dual-output pin out
✦ use the GS2988 for a single-output variant that is
drop-in compatible to the GS2978
• Pb-free and RoHS compliant
APPLICATIONs
• SMPTE 424M, SMPTE 292M and SMPTE 259M coaxial
cable serial digital interfaces