LMH1228 LMH1228 12G UHD-SDI Dual Cable Driver with Integrated Reclocker | TI.com

LMH1228
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
LMH1228 12G UHD-SDI Dual Cable Driver with Integrated Reclocker

 

More Information

For more information on the LMH1228  Request Now

Description

LMH1228 device is a 12G UHD-SDI low power dual output cable driver with integrated reclocker. It supports SMPTE video rates up to 11.88 Gbps, enabling UHD video for 4K/8K applications. With a wide range clock-and-data recovery (CDR) circuit, the on-chip reclocker automatically detects and locks to all SMPTE video rates up to 11.88 Gbps. The additional reclocked 100-Ω driver output on the host-side can be used for monitoring or signal distribution purposes.

The on-chip reclocker attenuates high-frequency jitter and fully regenerates the data using a clean, low-jitter clock. The reclocker has a built-in loop filter and does not require any input reference clock. The LMH1228 also has an internal eye opening monitor and a programmable pin for CDR lock indication, input signal detect, or hardware interrupts to support system diagnostics and board bring-up.

The LMH1228 is powered from a single 2.5-V supply. It is offered in a small footprint 5 mm × 5 mm 32-pin WQFN package. The LMH1228 is pin compatible with the LMH1208 (12G Dual Cable Driver).

Features

  • Supports ST-2082-1 (12G), ST-2081-1 (6G), ST-424 (3G), ST-292 (HD), and ST-259 (SD)
  • Compatible With DVB-ASI and AES10 (MADI)
  • Integrated Reclocker Locks to SMPTE Rates of 11.88 Gbps, 5.94 Gbps, 2.97 Gbps, 1.485 Gbps or Divide-by-1.001 Sub-Rates and 270 Mbps
  • Integrated Eye Opening Monitor (EOM)
  • Dual Differential Output Cable Drivers
  • On-Chip 75-Ω Termination and Return Loss Compensation Network
  • Adaptive PCB Input Equalizer
  • Reclocked 100-Ω Loop-Back Output
  • Automatic Slew Rate Control on 75-Ω Outputs
  • Automatic Pre-Emphasis and Output Amplitude on 75-Ω Outputs
  • Programmable De-Emphasis and Output Amplitude on 100-Ω Output
  • Polarity Inversion on 75-Ω and 100-Ω Outputs
  • Automatic Power Save in Absence of Input Signal
    • Power Consumption: 25 mW (Typical)
  • Power-Down Control Through ENABLE Pin
  • Single 2.5-V Supply
    • Power Consumption: 305 mW (Typical)
  • Programmable Through Pins, SPI, or SMBus Interface
  • –40°C to +85°C Operating Temperature Range
  • 5-mm × 5-mm, 32-pin WQFN Package

All trademarks are the property of their respective owners.

Parametrics

Compare all products in Serial digital interface (SDI) Email Download to Excel
Part number Order Function Data rate (Max) (Gbps) Power consumption (mW) Control interface Package Group Package size: mm2:W x L (PKG) Operating temperature range (C)
LMH1228 Order now Cable driver
Cable driver with reclocker    
11.88     315     Pin
SMBus
SPI    
WQFN | 32     32WQFN: 25 mm2: 5 x 5 (WQFN | 32)     -40 to 85    
LMH1208 Order now Cable driver     11.88     255     Pin
SMBus
SPI    
WQFN | 32     32WQFN: 25 mm2: 5 x 5 (WQFN | 32)     -40 to 85