LMH0074 Datasheet, PDF (1/14 Pages) Intersil Corporation – SMPTE 259M / 344M Adaptive Cable Equalizer

LMH0074
www.ti.com
SNLS277D – AUGUST 2007 – REVISED APRIL 2013
LMH0074 SMPTE 259M / 344M Adaptive Cable Equalizer
Check for Samples: LMH0074
FEATURES
1
•2 SMPTE 259M and SMPTE 344M Compliant
• Supports DVB-ASI at 270 Mbps
• Data Rates: 125 Mbps to 540 Mbps
• Equalizes up to 400 Meters of Belden 1694A at
270 Mbps
• Manual Bypass and Output Mute with a
Programmable Threshold
• Single-Ended or Differential Input
• 50Ω Differential Outputs
• Single 3.3V Supply Operation
• Industrial Temperature Range: −40°C to +85°C
• 208mW Typical Power Consumption with 3.3V
Supply
• Footprint Compatible with the LMH0044 and
the GS9074A
DESCRIPTION
The LMH0074 SMPTE 259M / 344M 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 540 Mbps and
supports SMPTE 259M and SMPTE 344M.
The LMH0074 implements DC restoration to correctly
handle pathological data conditions. The equalizer
may be driven in either a single ended or differential
configuration.
Additional features include separate carrier detect
and output mute pins which may be tied together to
mute the output when no signal is present. A
programmable mute reference is provided to mute the
output at a selectable level of signal degradation.
APPLICATIONS
• SMPTE 259M and SMPTE 344M Serial Digital
Interfaces
• Serial Digital Data Equalization and Reception
• Data Recovery Equalization
Typical Application
Coaxial Cable
6.8 nH
75:
75:
1 PF
1 PF
37.4:
LMH0074 Adaptive
Cable Equalizer
SDI
SDO
SDI
SDO
MUTE
MUTE_REF
BYPASS
CD
AEC+
AEC-
4.7 PF
4.7 PF
Outputs
1 PF
MUTE
CD
MUTE_REF
BYPASS
1
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2
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 © 2007–2013, Texas Instruments Incorporated