Low-Power 3G/HD/SD SDI Adaptive Cable Equalizer - LMH0324

LMH0324 (ACTIVE)

Low-Power 3G/HD/SD SDI Adaptive Cable Equalizer

 

Recommended alternative parts

  • LMH0387  -  3G SDI Configurable I/O (EQ/Cable Driver)
  • LMH1219  -  12G SDI Cable Equalizer with Integrated Reclocker (Footprint Compatible)
  • LMH0318  -  3G SDI Reclocker with Integrated Cable Driver

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Description

The LMH0324 is a low power, dual output, extended reach adaptive cable equalizer. It is designed to equalize SDI data transmitted over 75 Ω coax cable. The equalizer operates over a wide range of data rates from 125 Mbps to 2.97 Gbps. The equalizer includes an active sensing circuitry that ensures robust performance and enhanced immunity to variations in the input signal launch amplitude.

The LMH0324 provides extended cable reach with low power consumption. It offers power management to reduce power consumption further when no input signal is present.

The LMH0324 has two differential serial data outputs, which provide flexibility for fan-out buffering. The output drivers offer programmable de-emphasis to compensate for board trace losses at the LMH0324 outputs. The operating state of the LMH0324 can be set via pin control. Additional settings of the device can be programmed via SPI or SMBus interface.

The LMH0324 is pin-compatible to the LMH1219 (12 Gbps adaptive cable equalizer with integrated reclocker). The pin compatibility allows ease of upgrade from a 3 Gbps equalizer to a 12 Gbps equalizer with integrated reclocker.

Features

  • Supports ST 424(3G), ST 292(HD), and ST 259(SD)
  • Compatible with DVB-ASI and AES10 (MADI)
  • Adaptive Cable Equalizer
  • Cable Reach (Belden 1694A):
    • 200 m at 2.97 Gbps
    • 280 m at 1.485 Gbps
    • 600 m at 270 Mbps
  • Low Power: 78 mW (typical)
  • Power Save Mode: 15 mW
  • On-chip input Termination (75 Ω single-ended)
  • Integrated Input Return Loss Network
  • Dual 100 Ω Output Drivers with De-Emphasis
  • Independent Output Power Down Control
  • Supports Signal Splitter Mode (–6 dB Launch Amplitude)
  • Cable Length Indicator
  • Digital MUTEREF Threshold
  • Powers from 2.5 V or 1.8 V Supply
  • Configurable by Control Pins, SPI or SMBus Interface
  • 4 mm × 4 mm 24-pin QFN Package
  • Operating Temperature Range: –40°C to 85°C

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Parametrics Compare all products in SDI Cable Equalizers, Drivers, Reclockers, and Cross-Points

 
Function
Supply Voltage (V)
ESD HBM (kV)
Max Data Rate (Mbps)
In / Out count
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
Pin/Package
LMH0324 LMH0344 LMH0384 LMH0395 LMH1219
Equalizer    Equalizer    Equalizer    Equalizer    Equalizer
Equalizer with Reclocker
Reclocker   
1.8
2.5   
3.3    3.3    2.5    2.5   
4.5    8    6.5    6    4.5   
2970    2970    2970    2970    11880   
1/2    1/1    1/1    1/2    2/2   
-40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85   
WQFN    WQFN
csBGA   
WQFN    WQFN    WQFN   
24WQFN: 16 mm2: 4 x 4(WQFN)    16WQFN: 16 mm2: 4 x 4(WQFN)
25csBGA: 9 mm2: 3 x 3(csBGA)   
16WQFN: 16 mm2: 4 x 4(WQFN)    24WQFN: 16 mm2: 4 x 4(WQFN)    24WQFN: 16 mm2: 4 x 4(WQFN)   
24WQFN    16WQFN
25csBGA   
16WQFN    24WQFN    24WQFN