1 Features
1• 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

2 Applications
• SMPTE Compatible Serial Digital Interface (SDI)
• Broadcast Video Routers, Switchers, and Monitors
• DVB-ASI and Distribution Amplifiers
• Digital Video Processing and Editing

3 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.