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Features
Supports SMPTE 424M, SMPTE 292M, and SMPTE 259M (C) serial digital video standards
Supports 270 Mbps, 1.483 Gbps, 1.485 Gbps, 2.967 Gbps, and 2.97 Gbps serial data rate operation
Supports DVB-ASI at 270 Mbps
Single 3.3V supply operation
370 mW typical power consumption
Two differential, reclocked outputs
Choice of second reclocked output or low-jitter, differential, data-rate clock output
Single 27 MHz external crystal or reference clock input
Manual or automatic rate select input
SD/HD operating rate indicator output
Lock Detect indicator output
Output mute function for data and clock
Auto/Manual reclocker bypass
Differential LVPECL compatible serial data inputs and outputs
LVCMOS control inputs and indicator outputs
20-pin e-TSSOP or 24-pin LLP package
Industrial temperature range: -40°C to +85°C
Footprint compatible with the LMH0046 and
LMH0026 (e-TSSOP package)
Description The LMH0346 3 Gbps HD/SD SDI Reclocker retimes serial digital video data conforming to the SMPTE 424M, SMPTE 292M, and SMPTE
259M (C) standards. The LMH0346 operates at serial data rates of 270 Mbps, 1.483 Gbps, 1.485 Gbps, 2.967 Gbps, and 2.97 Gbps.
The LMH0346 supports DVB-ASI operation at 270 Mbps.
The LMH0346 automatically detects the incoming data rate and adjusts itself to retime the incoming data to suppress accumulated
jitter. The LMH0346 recovers the serial data-rate clock and optionally provides it as an output. The LMH0346 has two differential
serial data outputs; the second output may be selected as a low-jitter, data-rate clock output. Controls and indicators are:
serial clock or second serial data output select, manual rate select input, SD/HD rate indicator output, lock detect output,
auto/manual data bypass and output mute. The serial data inputs, outputs, and serial clock outputs are differential LVPECL
compatible. The CML serial data and serial clock outputs are suitable for driving 100Ω differentially terminated networks.
The control logic inputs and outputs are LVCMOS compatible.
The LMH0346 is powered from a single 3.3V supply. Power dissipation is typically 370 mW.
The device is available in two space–saving packages: a 6.5 X 4.4 mm 20-pin e-TSSOP and an even more space–efficient 5 X
4 mm 24-pin LLP package.
Applications
SDTV/HDTV and 3 Gbps serial digital video interfaces for:
Digital video routers and switchers
Digital video processing and editing equipment
DVB-ASI equipment
Video standards and format converters
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Also Recommended
| LMH0303▲ | Also See LMH0303 Triple-rate SDI Cable Driver With Cable Detection |
| LMH0356▲ | Also See LMH0356 Triple-rate SDI Reclocker With 4:1 Mux And FR4 EQ |
| LMH0384▲ | Also See LMH0384 Triple-rate SDI Extended Reach Equalizer |
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Typical Application
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LMH0303
