SEMTECH GS12241-INE3

GS12241 is a low-power, multi-rate reclocking cable equalizer supporting rates up to 12G UHD-SDI. It is designed to equalize and recover signals received over 80 meters of coaxial cable at 12G, compensate for the DC content of SMPTE pathological signals, and reclock input data. An integrated eye monitor provides non-destructive, mission-mode analysis of the equalized input signal. The 256x128 resolution scan matrix enables precise signal analysis to accelerate prototyping and facilitate field analysis. Built-in macro support enables customizable cross-section analysis and rapid horizontal and vertical eye opening measurements. With high phase coherence between scans and configurable spatial and temporal thresholds, algorithms can be deployed in the field to analyze long-term signal quality variations (bathtub curves), reducing costly system installation and commissioning time caused by intermittent errors. Two independently controlled trace drivers feature highly configurable pre-emphasis and swing control to compensate for long trace and connector losses. Pre-emphasis pulse width can be optimized to compensate for transmission line frequency response perturbations caused by via connectors and stubs. GS12241 is pin-compatible with the GS12141 single-input and GS12142 dual-input 12G UHD-SDI multi-rate reclocking cable equalizers, as well as the GS3241 3G SDI multi-rate reclocking cable equalizer.

• 75Ω cable input interface with on-chip termination
• Input/output compliant with SMPTE ST 2082-1, ST 2081-1, ST 424, ST 292-1, and ST 259
• Multi-standard operation from 1Mb/s to 11.88Gb/s
• In addition to standard SMPTE rates, the device supports retiming of DVB-ASI at 270Mb/s and MADI at 125Mb/s
• 3D input signal eye monitor
• PRBS generator and checker
• Automatic cable equalization — typical equalized cable length (1694A cable): 80m at 11.88Gb/s, 100m at 5.94Gb/s, 190m at 2.97Gb/s, 260m at 1.485Gb/s, 450m at 270Mb/s and 125Mb/s
• Cable equalizer mode features: automatic power-down on loss of signal, programmable carrier detect with squelch threshold adjustment, programmable transmit swing compensation for non-compliant sources, manual and automatic cable equalizer bypass
• Trace driver features: integrated 100Ω differential output termination, extended output DC-coupling support via 1.2V to 2.5V output supply range, trace driver data output pre-emphasis to compensate for up to 20-inch FR4 loss at 11.88Gb/s
• Manual or automatic retimer bypass
• Manual or automatic mute or disable on LOS
• CDR features: manual or automatic rate mode, wide loop bandwidth control, retiming at the following data rates: 125Mb/s, 270Mb/s, 1.485Gb/s, 2.97Gb/s, 5.94Gb/s, and 11.88Gb/s — including f/1.001 rates
• Single 1.8V supply for analog and digital core
• GSPI serial control and monitoring interface
• Four configurable GPIO pins for control or status monitoring
• Wide operating temperature range: -40°C to +85°C
• Compact 6mm x 4mm 40-pin QFN package
• Pin-compatible with GS12141, GS12142, and GS3241
• Lead-free/halogen-free/RoHS and WEEE compliant package

• Next-generation 12G UHD-SDI infrastructure, designed to support UHDTV1, UHDTV2, 4K D-Cinema, and 3D HFR and HDR production image formats
• Typical applications: monitors, switchers, distribution amplifiers, and routers