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LMH1297RTVR

12G-SDI cable driver/reclocker, WQFN-32

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Manufacturer Part：

LMH1297RTVR

Package：

WQFN-32 (5x5mm)

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Description

Product Overview

The LMH1297RTVR from TI is a 12G-SDI cable driver and reclocker supporting SD/HD/3G/6G/12G-SDI data rates with adaptive equalization in WQFN-32 for broadcast video.

Key Specifications

Package WQFN-32 (5x5mm)

Features

  • See datasheet for complete specifications
  • Industry-standard package

Applications

  • Industrial control
  • Consumer electronics
  • Communication equipment
  • Power management

The LMH1297RTVR from TI is a 12G-SDI cable driver and reclocker supporting SD/HD/3G/6G/12G-SDI data rates with adaptive equalization in WQFN-32 for broadcast video.

The LMH1297RTVR is a 12G-SDI cable driver and reclocker from TI in WQFN-32 (5x5mm). It supports SD-SDI (270Mbps), HD-SDI (1.485Gbps), 3G-SDI (2.97Gbps), 6G-SDI (5.94Gbps), and 12G-SDI (11.88Gbps) data rates per SMPTE ST-2082. The cable driver section takes a single-ended or differential input and drives an SMPTE-compliant 800mV signal into 75-ohm coaxial cable. The output slew rate and amplitude are programmable via SPI to compensate for different cable lengths. The reclocker section extracts the clock from the incoming SDI data stream using a PLL (Phase-Locked Loop) and re-times the data to remove jitter accumulated from cable transmission. The PLL bandwidth is programmable (narrow for long cables, wide for short cables) to optimize jitter tolerance vs. jitter transfer. Auto-rate detection identifies the SDI standard automatically. The LOS (Loss of Signal) output indicates when no valid SDI input is detected. The CD (Carrier Detect) output indicates valid SDI signal presence. Power consumption is 450mW at 12G-SDI. Applications include broadcast video equipment, routers, and frame synchronizers.

Pin Name Type Function
1-4 SDI_P/SDI_N Input SDI input differential pair
5-8 SDO_P/SDO_N Output SDI output differential pair
9-12 VDD/GND Power 3.3V supply and ground
13-16 SPI_SCK/SPI_MOSI/SPI_CS Input SPI control interface
17-20 LOS/CD/LOCK Output Status outputs (Loss of signal, carrier detect, lock)
21-24 RATE_SEL/GEN_LOCK Input Rate selection and genlock control
25-32 RECLK_OUT/THERMAL Output Reclocked output and thermal pad
  • Industrial control
  • Consumer electronics
  • Communication equipment
  • Power management
    • Manufacturer Part Number Package Notes
    Texas Instruments LMH1298RTVR WQFN-32 SDI equalizer + cable driver combo
    Macom M23562 QFN-32 12G-SDI reclocker
    Semtech GS12381-INE3 QFN-32 12G-SDI reclocker, auto-rate
    Texas Instruments LMH0346RTVR WQFN-24 3G-SDI cable driver, lower speed
    Semtech GS6150-INE3 QFN-32 12G-SDI adaptive cable equalizer
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