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GS3440

Semtech
Part Number GS3440
Manufacturer Semtech
Description Extended Reach 3G/HD/SD Adaptive Cable Equalizer
Published Jan 29, 2016
Detailed Description GS3440 Extended Reach 3G/HD/SD Adaptive Cable Equalizer Key Features • SMPTE ST 424, SMPTE ST 292 and SMPTE ST 259 com...
Datasheet PDF File GS3440 PDF File

GS3440
GS3440

Overview
GS3440 Extended Reach 3G/HD/SD Adaptive Cable Equalizer Key Features • SMPTE ST 424, SMPTE ST 292 and SMPTE ST 259 compliant • Automatic cable equalization • Multi-standard operation from 125Mb/s to 2.
97Gb/s • Performance optimized for 270Mb/s, 1.
485Gb/s and 2.
97Gb/s.
Typical equalized length of Belden 1694A cable up to: Š 210m at 2.
97Gb/s Š 300m at 1.
485Gb/s Š 550m at 270Mb/s • Supports DVB-ASI at 270Mb/s • Supports MADI at 125Mb/s • Manual bypass (useful for low data rates with slow rise/fall times) • Programmable carrier detect with squelch threshold adjustment • Automatic power-down on loss of signal Š Standby power <35mW (typical) • Differential output supports DC-coupling from 1.
2V to 3.
3V CML logic • Option to compensate for 6dB flat attenuation prior to input of device • Selectable output de-emphasis: 2dB, 4dB and 6dB • Standard EIA/JEDEC logic control and status signal levels • Single 3.
3V power supply operation • 180mW power consumption (typical) • Wide operating temperature range of -40ºC to +85ºC • Small footprint QFN package (4mm x 4mm) Š Footprint compatible with the GS2974A, GS2974B, GS2984 and GS2994 • Pb-free and RoHS compliant Applications • SMPTE ST 424, SMPTE ST 292 and SMPTE ST 259 coaxial cable serial digital interfaces Description The GS3440 is a high-speed BiCMOS device designed to equalize and restore signals received over 75Ω coaxial cable.
The device is designed to support SMPTE ST 424, SMPTE ST 292 and SMPTE ST 259, and is optimized for performance at 270Mb/s, 1.
485Gb/s and 2.
97Gb/s.
The GS3440 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 carrier.
A voltage programmable threshold, set via the SQ_ADJ pin, forces CD high when the input signal amplitude falls below the threshold.
This allows the GS3440 to distinguish between low...


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