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GS6042 Datasheet(PDF) 1 Page - Semtech Corporation |
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GS6042 Datasheet(HTML) 1 Page - Semtech Corporation |
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1 / 21 page  1 of 21 Proprietary and Confidential GS6042 Final Data Sheet Rev. 3 PDS-060055 May 2014 Gennum Products GS6042 6G UHD-SDI/3G/HD/SD Adaptive Cable Equalizer www.semtech.com Key Features • Supports data rates from 125Mb/s to 6.25Gb/s • SMPTE ST 2081 (proposed), SMPTE ST 424, SMPTE ST 292, and SMPTE ST 259 compliant • Automatic cable equalization • Typical equalized length of Belden 1694A cable: 80m at 5.94Gb/s 210m at 2.97Gb/s 300m at 1.485Gb/s 500m at 270Mb/s • Supports DVB-ASI at 270Mb/s • Supports MADI at 125Mb/s • Manual bypass control • Programmable carrier detect with squelch threshold adjustment • Automatic power-down on loss of signal • Differential output supports DC-coupling from +1.2V to +3.3V CML logic • Optional 6dB flat band gain on input • Selectable output de-emphasis: 2dB, 6dB, and 8dB • Standard EIA/JEDEC logic for control/status signals • Single +3.3V power supply operation • 180mW power consumption (35mW in sleep) • Operating temperature range: -40ºC to +85ºC • Small footprint QFN package (4mm x 4mm) Footprint compatible with the GS2974A, GS2974B, GS2984, GS2994, and GS3440 • Pb-free and RoHS compliant Applications • SMPTE ST 2081 (proposed), SMPTE ST 424, SMPTE ST 292, and SMPTE ST 259 coaxial cable serial digital interfaces • Serialized 8b/10b encoded video streams up to 6.25Gb/s Description The GS6042 is a high-speed BiCMOS device designed to optimally equalize and restore signals received over 75 Ω coaxial cable. The device supports data rates up to 6.25Gb/s while being optimized for the proposed SMPTE ST 2081, as well as SMPTE ST 424, SMPTE ST 292, and SMPTE ST 259. The GS6042 features DC restoration to compensate for the DC content of SMPTE pathological signals. The Carrier Detect output pin (CD) indicates whether an input signal has been detected. It can be connected directly to the SLEEP pin to enable automatic sleep on loss of input. A CD threshold is set via the SQ_ADJ pin, allowing the GS6042 to distinguish between small amplitude SDI signals and noise at the input of the device. The equalizing and DC restore stages are disengaged and no equalization occurs when the BYPASS pin is HIGH. This is useful for signals launched at the signal source with low data rates and/or slow rise/fall times. The GS6042 features a gain selection pin (GAIN_SEL) which can be used to compensate for 6dB flat attenuation prior to the input of the device. The differential output can be DC-coupled to Semtech’s reclockers and cable drivers, as well as industry-standard CML logic by changing the voltage applied to the VCC_O pin. In general, DC-coupling to any termination voltage between +1.2V and +3.3V is supported. The GS6042 also features programmable output de-emphasis with three user-selectable operating levels to support long PCB traces at the output of the device. Power consumption of the GS6042 is typically 180mW when its output is DC-coupled at +1.2V. The GS6042 is Pb-free, and the encapsulation compound does not contain halogenated flame retardant. This component and all homogeneous subcomponents are RoHS compliant. |
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