LMH1229

具有集成時(shí)鐘恢復(fù)器的第二代 12G SDI 電纜均衡器; Adaptive cable equalizer with integrated reclocker\n \nSupports ST-2082-1(12G), ST-2081-1(6G), ST-424(3G), ST-292(HD), and ST-259(SD)\n \nCompatible with DVB-ASI and AES10 (MADI)\n \nIntegrated referenceless reclocker locks to SMPTE rates: 11.88Gbps, 5.94Gbps, 2.97Gbps, 1.485Gbps, or divide-by-1.001 sub-rates, 270Mbps\n \nTypical cable reach (Belden 1694A): \n \n100m at 11.88Gbps (4Kp60 UHD)\n \n150m at 5.94Gbps (UHD)\n \n220m at 2.97Gbps (FHD)\n \n300m at 1.485Gbps (HD)\n \n600m at 270Mbps (SD) (Under Evaluation)\n \n\n \nOn-chip 75? termination and return loss compensation network\n \nInput cable equalizer and reclocker features: \n \nImproved cable reach with stress patterns\n \nProgrammable CDR loop bandwidth settings\n \n2:1 75? input mux (LMH1239 only)\n \n\n \nOutput driver features: \n \n1:2 100? fanout output with de-emphasis\n \nReclocked 75? loop-through output with cable fault detection (up to 600m)\n \n\n \nBuilt-in PRBS generator, checker, and pathological pattern detector\n \nInternal eye opening monitor\n \nSingle 2.5V supply\n \nLow power: 375 mW (typical)\n \nPower Save mode: 63 mW\n \nConfigurable by control pins, SPI, or SMBus interface\n \n5mm × 5mm 32-pin WQFN package\n \nOperating temperature range: –40°C to +85°C;

The LMH12x9 (LMH1229, LMH1239) is a long reach adaptive cable equalizer with integrated reclocker, dual outputs, and 75? loop-through output. The device is designed to equalize data transmitted over 75? coaxial cable and operates across SMPTE data rates ranging from 125Mbps to 11.88Gbps.\n\nThe adaptive equalizer at the SDI input enables automatic loss compensation for up to 100m Belden 1694A cable reach in 4K/8K video applications where 12G-SDI (11.88Gbps) is used. The integrated reclocker attenuates high frequency jitter and fully regenerates the data using a clean, low-jitter clock. The loop filter of the reclocker is adjustable with optional external capacitor for SDI cascade applications. \n\nFor routing simplicity and debug, the LMH12x9 features a 1:3 output mux consisting of two 100? fanouts with VOD and de-emphasis control and one 75? loop-through SDI output. The 75? loop-through output is provided to extend the signal reach or enable system-level diagnostics.\n\nThe LMH12x9 features internal integrated return loss networks that meet stringent SMPTE specifications across all data rates. The LMH12x9 also has an internal eye opening monitor and a programmable pin for CDR lock indication, input carrier detect, cable fault detection, or hardware interrupts to support system diagnostics and board bring-up.\n\nThe LMH1229 is pin compatible with the LMH1297 (12G UHD-SDI bidirectional I/O with integrated reclocker) when used in cable equalizer applications. For system-level redundancy, the LMH1239 is offered with an additional integrated SDI input mux.

LMH1229

LMH12x9 12G UHD Long Reach Cable Equalizer with Integrated Reclocker

1Features ?Adaptivecableequalizerwithintegratedreclocker ?SupportsST-2082-1(12G),ST-2081-1(6G), ST-424(3G),ST-292(HD),andST-259(SD) ?CompatiblewithDVB-ASIandAES10(MADI) ?Integratedreferencelessreclockerlocksto SMPTErates:11.88Gbps,5.94Gbps,2.97Gbps, 1.485Gbps,or

LMH1229RTVR

絲印：L1229；Package：WQFN；LMH12x9 12G UHD Long Reach Cable Equalizer with Integrated Reclocker

1Features ?Adaptivecableequalizerwithintegratedreclocker ?SupportsST-2082-1(12G),ST-2081-1(6G), ST-424(3G),ST-292(HD),andST-259(SD) ?CompatiblewithDVB-ASIandAES10(MADI) ?Integratedreferencelessreclockerlocksto SMPTErates:11.88Gbps,5.94Gbps,2.97Gbps, 1.485Gbps,or

LMH1229RTVT

絲?。?a target="_blank" title="Marking" href="/l1229/marking.html">L1229；Package：WQFN；LMH12x9 12G UHD Long Reach Cable Equalizer with Integrated Reclocker

1Features ?Adaptivecableequalizerwithintegratedreclocker ?SupportsST-2082-1(12G),ST-2081-1(6G), ST-424(3G),ST-292(HD),andST-259(SD) ?CompatiblewithDVB-ASIandAES10(MADI) ?Integratedreferencelessreclockerlocksto SMPTErates:11.88Gbps,5.94Gbps,2.97Gbps, 1.485Gbps,or

LMH1981MTX/NOPB

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TSSOP14