GS3140 Multi-Rate Adaptive 3G SDI Equalizer 3kV HBM ESD protection on all pins Key Features Wide operating temperature range of -40C to +85C Multi-standard operation at rates between 1Mb/s and 2.97Gb/s Small footprint QFNCOL package (16-pin, 4mm x 4mm) SMPTE ST 424, SMPTE ST 292 and SMPTE ST 259 compliant Pb-free and RoHS compliant AES10 (MADI) compatible Pin-compatible with the GS6140 Industry leading cable reach, with automatic cable equalization for different lengths of cable Applications Performance optimized for 125Mb/s, 270Mb/s, SMPTE ST 424, SMPTE ST 292, SMPTE ST 259 and AES10 1.485Gb/s, and 2.97Gb/s. Typical equalized length of coaxial cable serial digital interfaces Belden 1694A cable up to: 200m at 2.97Gb/s Description 280m at 1.485Gb/s The GS3140 is a high-speed BiCMOS device designed to equalize and restore signals received over cable. 500m at 270Mb/s 1.8V core power supply The device is designed to support SMPTE ST 424, SMPTE ST 292, SMPTE ST 259 and AES10 (MADI), and it is optimized Typical power consumption of 84mW when for performance at 125Mb/s, 270Mb/s, 1.485Gb/s, and DC-coupled at 1.2V with OUTPUT SWING = 0011 b 2.97Gb/s. (see Table 4-2) Ultra-low power mode for shorter cable reach The device supports MADI serial signals at 125Mb/s with applications peak-to-peak launch amplitude between 300mV and ppd 600mV (with AES10 spec rise and fall times) and Upstream launch swing compensation from 250mV ppd ppd 800mV 10% (with SD-SDI rise and fall times). ppd to 1V in approximately 50mV steps (Default ppd ppd The GS3140 features DC restoration to compensate for the 750mV ) ppd DC content of SMPTE pathological signals. Auto/Manual bypass (useful for low data rates with slow rise/fall times) Loss of Signal (LOS) is detected when the input carrier is lost or signal amplitude falls below a programmable threshold. Robust, noise-immune signal detection with squelch This is further processed by a filter programmable up to threshold adjustment 1.6s before LOS status is asserted. The device can be Auto/Manual control of SLEEP/MUTE/DISABLE OUTPUT programmed to automatically sleep/mute/disable the modes output on loss of signal. Data Rate detection and indication An interrupt pin (INT) indicates LOS by default, and can be <MADI, MADI, SD, HD, 3G differentiation programmed to signal various other statuses. Digital cable length indication (CLI) When the BYPASS control bit is set, the equalizing and DC Differential output supports DC-coupling from restore stages are disengaged. This is useful for signals 1.2V to 2.5V CML logic and AC-coupling for other logic launched at the source with low data rates and/or slow rise families and fall times. Programmable/Rate-dependent output de-emphasis level and delay Host interface for status and control GS3140 1 of 40 www.semtech.com Final Data Sheet Rev.1 Semtech PDS-060939 May 2015 Proprietary & ConfidentialThe differential output can be DC-coupled to Semtechs The device comes in a 16-pin, 4mm x 4mm QFNCOL reclockers and cable drivers, as well as industry-standard package. +1.2V, +1.8V and +2.5V CML logic by changing the voltage Power consumption of the GS3140 is typically 84mW when applied to the VCC O pin. DC-coupled to a +1.2V termination voltage with The GS3140 also features programmable output OUTPUT SWING = 0011 (see Table 4-2). b de-emphasis with eight user-selectable operating levels to The GS3140 is Pb-free, and the encapsulation compound support long PCB traces at the output of the device. The does not contain halogenated flame retardant. output swing can be programmed, via the user interface, This component and all homogeneous subcomponents are from approximately 250mV to 1V in 50mV steps. ppd ppd ppd RoHS compliant. INT CS SCLK SDIN SDOUT VCC A Control and Status VCC O DDO SDI Output Trace Equalizer DC Restore Driver DDO SDI VCC D VEE A AGC VEE O AGC AGC GS3140 Functional Block Diagram GS3140 2 of 40 www.semtech.com Final Data Sheet Rev.1 Semtech Proprietary & Confidential PDS-060939 May 2015