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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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GS2974A Datenblatt(PDF) 1 Page - Gennum Corporation |
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GS2974A Datenblatt(HTML) 1 Page - Gennum Corporation |
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1 / 16 page  1 of 16 GS2974A HD-LINX™ III Adaptive Cable Equalizer www.gennum.com Data Sheet 42216 - 3 January 2009 GS2974A HD-LINX™ III Adaptive Cable Equalizer Features • SMPTE 424M, SMPTE 292M and SMPTE 259M compliant •Automatic cable equalization • 0.3UI Maximum Output Jitter at 2.97Gb/s • Multi-standard operation from 143Mb/s to 2.97Gb/s • Supports DVB-ASI at 270Mb/s • Small footprint (4mm x 4mm) • Pb-free and RoHS compliant • Manual bypass (useful for low data rates with slow rise/fall times) • Performance optimized for 1.485Gb/s and 2.97Gb/s • Typical equalized length of Belden 1694A cable: 120m at 2.97Gb/s, 200m at 1.485Gb/s, and 350m at 270Mb/s •50Ω differential output (internal 50Ω pull-ups) • Programmable mute based on max cable length adjust • Single 3.3V power supply operation • Operating temperature range: 0°C to +70°C Applications • SMPTE 424M, SMPTE 292M and SMPTE 259M Coaxial Cable Serial Digital Interfaces. Description The GS2974A is a high-speed BiCMOS integrated circuit designed to equalize and restore signals received over 75Ω co-axial cable. The GS2974A is designed to support SMPTE 424M, SMPTE 292M and SMPTE 259M, and is optimized for performance at 1.485Gb/s and 2.97Gb/s. The GS2974A features DC restoration to compensate for the DC content of SMPTE pathological test patterns. A voltage programmable mute threshold (MCLADJ), applicable for SD mode (refer to Section 4.3), is included to allow muting of the GS2974A output when an approximate selected cable length is reached for SMPTE 259M signals. This feature allows the GS2974A to distinguish between low amplitude SD-SDI signals and noise at the input of the device. The serial digital outputs of the GS2974A may be forced to a mute state by applying a voltage to the MUTE pin. Power consumption is typically 215mW using a 3.3V power supply. The GS2974A is lead-free, and the encapsulation compound does not contain halogenated flame retardant. This component and all homogeneous subcomponents are RoHS compliant. GS2974A Functional Block Diagram CABLE LENGTH ADJUSTOR CARRIER DETECT MUTE EQUALIZER DC RESTORE OUTPUT AGC CD MUTE SDO BYPASS SDO SDI SDI MCLADJ |
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Ähnliche Beschreibung - GS2974A |
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