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GS3140 数据表(PDF) 1 Page - Gennum Corporation

部件名 GS3140
功能描述  Digital cable length indication
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制造商  GENNUM [Gennum Corporation]
网页  http://www.gennum.com
标志 GENNUM - Gennum Corporation

GS3140 数据表(HTML) 1 Page - Gennum Corporation

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Semtech
Proprietary & Confidential
GS3140
Final Data Sheet
Rev.1
PDS-060939
May 2015
GS3140
Multi-Rate Adaptive 3G SDI
Equalizer
www.semtech.com
Key Features
Multi-standard operation at rates between 1Mb/s and
2.97Gb/s
SMPTE ST 424, SMPTE ST 292 and SMPTE ST 259
compliant
AES10 (MADI) compatible
Industry leading cable reach, with automatic cable
equalization for different lengths of cable
Performance optimized for 125Mb/s, 270Mb/s,
1.485Gb/s, and 2.97Gb/s. Typical equalized length of
Belden 1694A cable up to:
200m at 2.97Gb/s
280m at 1.485Gb/s
500m at 270Mb/s
1.8V core power supply
Typical power consumption of 84mW when
DC-coupled at 1.2V with OUTPUT_SWING = 0011b
(see Table 4-2)
Ultra-low power mode for shorter cable reach
applications
Upstream launch swing compensation from 250mVppd
to 1Vppd in approximately 50mVppd steps (Default
750mVppd)
Auto/Manual bypass (useful for low data rates with
slow rise/fall times)
Robust, noise-immune signal detection with squelch
threshold adjustment
Auto/Manual control of SLEEP/MUTE/DISABLE OUTPUT
modes
Data Rate detection and indication
<MADI, MADI, SD, HD, 3G differentiation
Digital cable length indication (CLI)
Differential output supports DC-coupling from
1.2V to 2.5V CML logic and AC-coupling for other logic
families
Programmable/Rate-dependent output de-emphasis
level and delay
Host interface for status and control
3kV HBM ESD protection on all pins
Wide operating temperature range of -40ºC to +85ºC
Small footprint QFN–COL package
(16-pin, 4mm x 4mm)
Pb-free and RoHS compliant
Pin-compatible with the GS6140
Applications
SMPTE ST 424, SMPTE ST 292, SMPTE ST 259 and AES10
coaxial cable serial digital interfaces
Description
The GS3140 is a high-speed BiCMOS device designed to
equalize and restore signals received over cable.
The device is designed to support SMPTE ST 424, SMPTE ST
292, SMPTE ST 259 and AES10 (MADI), and it is optimized
for performance at 125Mb/s, 270Mb/s, 1.485Gb/s, and
2.97Gb/s.
The device supports MADI serial signals at 125Mb/s with
peak-to-peak launch amplitude between 300mVppd and
600mVppd (with AES10 spec rise and fall times) and
800mVppd±10% (with SD-SDI rise and fall times).
The GS3140 features DC restoration to compensate for the
DC content of SMPTE pathological signals.
Loss of Signal (LOS) is detected when the input carrier is lost
or signal amplitude falls below a programmable threshold.
This is further processed by a filter programmable up to
1.6s before LOS status is asserted. The device can be
programmed to automatically sleep/mute/disable the
output on loss of signal.
An interrupt pin (INT) indicates LOS by default, and can be
programmed to signal various other statuses.
When the BYPASS control bit is set, the equalizing and DC
restore stages are disengaged. This is useful for signals
launched at the source with low data rates and/or slow rise
and fall times.


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