LMH0303_13 Datasheet, PDF (1/19 Pages) Texas Instruments – 3 Gbps HD/SD SDI Cable Driver with Cable Detect

LMH0303
www.ti.com
SNLS285G – APRIL 2008 – REVISED APRIL 2013
3 Gbps HD/SD SDI Cable Driver with Cable Detect
Check for Samples: LMH0303
FEATURES
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•2 SMPTE 424M, SMPTE 292M, SMPTE 344M, and
SMPTE 259M Compliant
• Data Rates to 2.97 Gbps
• Supports DVB-ASI at 270 Mbps
• Cable Detect on Output
• Loss of Signal Detect at Input
• Output Driver Power Down Control
• Typical Power Consumption: 130 mW in SD
Mode and 155 mW in HD Mode
• Power Save Mode Typical Power
Consumption: 4 mW
• Single 3.3V Supply Operation
• Differential Input
• 75Ω Differential Output
• Selectable Slew Rate
• Industrial Temperature Range: −40°C to +85°C
• 16-pin WQFN Package
• Footprint Compatible With the LMH0302
APPLICATIONS
• SMPTE 424M, SMPTE 292M, SMPTE 344M, and
SMPTE 259M Serial Digital Interfaces
• Digital Video Routers and Switches
• Distribution Amplifiers
DESCRIPTION
The LMH0303 3 Gbps HD/SD SDI Cable Driver with
Cable Detect is designed for use in SMPTE 424M,
SMPTE 292M, SMPTE 344M, and SMPTE 259M
serial digital video applications. The LMH0303 drives
75Ω transmission lines (Belden 1694A, Belden 8281,
or equivalent) at data rates up to 2.97 Gbps.
The LMH0303 includes intelligent sensing capabilities
to improve system diagnostics. The cable detect
feature senses near-end termination to determine if a
cable is correctly attached to the output BNC. Input
loss of signal (LOS) detects the presence of a valid
signal at the input of the cable driver. These sensing
features may be used to alert the user of a system
fault and activate a deep power save mode, reducing
the cable driver's power consumption to 4 mW. These
features are accessible via an SMBus interface.
The LMH0303 provides two selectable slew rates for
SMPTE 259M and SMPTE 424M / 292M compliance.
The output amplitude is adjustable ±10% in 5 mV
steps via the SMBus.
The LMH0303 is powered from a single 3.3V supply.
Power consumption is typically 130 mW in SD mode
and 155 mW in HD mode. The LMH0303 is available
in a 16-pin WQFN package.
Typical Application
SDI In
SD/HD
LMH0356
3G/HD/SD
SDI Reclocker
ENABLE
SDI
Clock or
Second
Data Output
LMH0303
3G/HD/SD
SDI Cable Driver
FAULT
SDA SCL
SDI Out
SMBus
Data
SMBus
Clock
Microcontroller
or
FPGA
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2008–2013, Texas Instruments Incorporated