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GS1524A Scheda tecnica(PDF) 1 Page - Gennum Corporation |
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GS1524A Scheda tecnica(HTML) 1 Page - Gennum Corporation |
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1 / 16 page  GS1524A Adaptive Cable Equalizer 1 of 16 GS1524A Adaptive Cable Equalizer Data Sheet 28852 - 5 June 2009 www.gennum.com Features • 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 • Pb-free and RoHS Compliant • Pin compatible with the GS9064 Cable Equalizer • Manual bypass (useful for low data rates with slow rise/fall times) • Performance optimized for 270Mb/s and 1.485Gb/s • Typical equalized length of Belden 1694A cable: 200m at 1.485Gb/s, 350m at 270Mb/s •50Ω differential output (with internal 50Ω pull-ups) • Manual output mute or programmable mute based on max cable length adjust • Cable length indicator for SMPTE 259M inputs • Single 3.3V power supply operation • Operating temperature range: 0°C to +70°C Applications • SMPTE 292M, SMPTE 344M and SMPTE 259M Coaxial Cable Serial Digital Interfaces. Description The GS1524A is a second-generation high-speed BiCMOS integrated circuit designed to equalize and restore signals received over 75Ω co-axial cable. The GS1524A is designed to support SMPTE 292M, SMPTE 344M and SMPTE 259M, and is optimized for performance at 270Mb/s and 1.485Gb/s. The GS1524A features DC restoration to compensate for the DC content of SMPTE pathological test patterns. The device also incorporates a Cable Length Indicator (CLI) 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 GS1524A output when an approximate selected cable length is reached for SMPTE 259M signals. This feature allows the GS1524A to distinguish between low amplitude SD-SDI signals and noise at the input of the device. The bidirectional CD/MUTE pin indicates the presence of a valid signal at the input of the GS1524A in addition to functioning as a mute control input. The outputs of the GS1524A will be forced to a mute state when an invalid input reference signal is applied to the input of the device or the application layer sets the CD/MUTE pin HIGH. If the application layer forces CD/MUTE LOW, the serial digital output of the device will always be active. Power consumption is typically 265mW using a 3.3V power supply. The GS1524A is Pb-free, and the encapsulation compound does not contain halogenated flame retardant (RoHS Compliant). |
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