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.