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LMH1219 Adaptive Cable Equalizer

Texas Instruments offers its LMH1219, 12G-SDI adaptive cable equalizer with integrated reclocker

Image of Texas Instruments' LMH1219 Adaptive Cable EqualizerTexas Instruments' LMH1219 is a low-power, dual-input and dual-output, adaptive equalizer with integrated reclocker. It supports SMPTE video rates up to 11.88 Gbps and 10 GbE video over IP, enabling UHD video for 4K/8K applications. An extended reach adaptive cable equalizer at IN0 is designed to equalize data transmitted over a 75Ω coaxial cable and operates over a wide range of data rates from 125 Mbps to 11.88 Gbps. An adaptive board trace equalizer at IN1 is SFF-8431 compatible and supports both SMPTE and 10 GbE data rates.

The integrated reclocker attenuates high-frequency jitter and provides the best signal integrity. The high-input jitter tolerance of the reclocker improves timing margin. The reclocker has a built-in loop filter, and operates without the need of a precision input reference clock. A non-disruptive eye monitor allows real time measurement of the serial data to simplify system debug and accelerate board bring-up.

The integrated 2:1 mux and 1:2 fanout provide flexibility for multiple video signals. The output drivers offer programmable de-emphasis to compensate board trace losses at its outputs. The integrated return loss network meets stringent SMPTE specifications across all data rates. The typical power consumption of the LMH1219 is 250 mW. In the absence of input signal, power is further reduced to 27 mW.

The LMH1219 is pin compatible to the LMH1226 (12G UHD reclocker) and the LMH0324 (3G adaptive cable equalizer).

Features
  • Supports ST-2082-1(12G), ST-2081-1(6G), ST-424(3G), ST-292(HD), and ST-259(SD)
  • Supports SFF8431 (SFP+) for SMPTE 2022-5/6
  • Compatible with DVB-ASI and AES10 (MADI)
  • Integrated reference-less reclocker locks to SMPTE and 10GbE rate: 11.88 Gbps, 5.94 Gbps, 2.97 Gbps, 1.485 Gbps, or divide-by-1.001 sub-rates, 270 Mbps and 10.3125 Gbps
  • Cable reach (Belden 1694A):
    • 75 m at 11.88 Gbps (4Kp60 UHD)
    • 120 m at 5.94 Gbps (UHD)
    • 200 m at 2.97 Gbps (FHD)
    • 280 m at 1.485 Gbps (HD)
    • 600 m at 270 Mbps (SD)
  • Adaptive cable equalizer at input 0 (IN0)
  • Adaptive board trace equalizer at input 1 (IN1)
  • Low power: 250 mW (typical)
  • Power-saving mode: 27 mW
  • Integrated input return loss network
  • 2:1 input mux, 1:2 fanout output with de-emphasis
  • Supports signal-splitter mode (-6 dB launch amplitude)
  • On-chip loop filter capacitor and eye monitor
  • Powers from single 2.5 V with on-chip 1.8 V regulator
  • Configurable by control pins, SPI, or SMBus interface
  • 4 mm x 4-pin QFN package
  • Operating temperature range: -40°C to 85°C

LMH1219 Adaptive Cable Equalizer

ImageManufacturer Part NumberDescriptionApplicationsInterfaceAvailable QuantityView Details
IC INTERFACE SPECIALIZED 24WQFNLMH1219RTWTIC INTERFACE SPECIALIZED 24WQFNCable EqualizationSerial1158 - Immediate
10001 - Factory Stock
View Details

Associated Parts

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
IC VIDEO RECLOCKER 24WQFNLMH1226RTWTIC VIDEO RECLOCKER 24WQFN907 - Immediate
6462 - Factory Stock
View Details
IC INTERFACE SPECIALIZED 24WQFNLMH0324RTWTIC INTERFACE SPECIALIZED 24WQFN6809 - Immediate
10001 - Factory Stock
View Details
Published: 2016-07-13