1 Features
1• ST 424, ST 292, ST 344, ST 259, and DVB-ASI
Compliant(1)
• Equalized Cable Lengths (Belden 1694A): 200
Meters at 2.97 Gbps, 220 Meters at 1.485 Gbps,
and 400 Meters at 270 Mbps
• Ultra-low Power Consumption: 140 mW (Dual
Outputs), 115 mW (Single Output)
• Dual Differential Outputs; Second Output Can Be
Independently Powered Down
• Power-Save Mode With Auto Sleep Control (17-
mW Typical Power Consumption in Power-Save
Mode)
• Designed for Crosstalk Immunity
• Output De-Emphasis to Compensate for FR4
Board Trace Losses
• Digital and Analog Programmable MUTEREF
Threshold
• Optional SPI Register Access and Pin Mode
Operation
• Input Data Rates: 125 Mbps to 2.97 Gbps
• Internally Terminated 100-Ω LVDS Outputs With
Programmable Output Common-Mode Voltage
and Swing
• Programmable Launch Amplitude Optimization
• Cable Length Indicator
• Single 2.5-V Supply Operation
• 24-Pin WQFN Package
• Industrial Temperature Range: −40°C to +85°C

2 Applications
• ST 424, ST 292, ST 344, and ST 259 Serial
Digital Interfaces(1)
• Broadcast Video Routers, Switchers, and
Distribution Amplifiers

3 Description
The LMH0395 3-Gbps HD/SD SDI Dual Output Low
Power Extended Reach Adaptive Cable Equalizer is
designed to equalize data transmitted over cable (or
any media with similar dispersive loss
characteristics). The equalizer operates over a wide
range of data rates from 125 Mbps to 2.97 Gbps and
supports ST 424, ST 292, ST 344, ST 259, and DVBASI
standards.
The LMH0395 device provides extended cable reach
with improved immunity to crosstalk and ultra low
power consumption. The equalizer includes active
sensing circuitry that ensures robust performance and
enhanced immunity to variations in the input signal
launch amplitude. The LMH0395 offers power
management to further reduce power consumption
when no input signal is present.
The LMH0395 has two differential serial data outputs,
increasing flexibility and eliminating the need for a
fanout buffer on the output in many applications. The
outputs may be independently enabled and
controlled. The output drivers offer programmable deemphasis
for up to 40 inches of FR4 trace losses.
The LMH0395 supports two modes of operation. In
pin mode, the LMH0395 operates with control pins to
set its operating state. In SPI mode, an optional SPI
serial interface can be used to access and configure
multiple LMH0395 devices in a daisy-chain
configuration.