The GS1524 is a second-generation high-speed bipolar integrated circuit designed to equalize and restore signals received over 75 ohm co-axial cable at data rates from 143Mb/s up to 1.485Gb/s. The GS1524 is designed to support SMPTE 292M, SMPTE 344M and SMPTE 259M, and is optimized for performance at 270Mb/s and 1.485Gb/s.
The GS1524 features DC restoration to compensate for the DC content of SMPTE pathological test patterns. The GS1524 also incorporates a Cable Length Indicator that provides an indication of the amount of cable being equalized for data rates up to 360Mb/s.
A voltage programmable mute threshold (MCLADJ) is included to allow muting of the GS1524 output when an approximate selected cable length is reached for SMPTE 259M signals. This feature allows the GS1524 to distinguish between low amplitude SD SDI signals and noise at the input of the device. The CD/MUTE pin provides an indication of the GS1524 mute status in addition to functioning as a mute control input. The output of the GS1524 may be forced to an active or a mute by applying a voltage to the CD/MUTE pin.
Power consumption is typically 265mW using a 3.3V power supply.
SMPTE 292M, SMPTE 344M and SMPTE 259M compliant
automatic cable equalization
multi-standard operation from 143Mb/s to 1.485Gb/s
supports DVB-ASI at 270Mb/s
manual bypass (useful for low data rates with slow rise/fall times)
performance optimized for 270Mb/s and 1.485Gb/s
typical maximum equalized length of Belden 1694A cable: 140m at 1.485Gb/s, 350m at 270Mb/s
