What is SDI?

Report
Professional Video Broadcast
One Stop Shop for
Professional & Broadcast Video
Hero Products
Future Product
LMH0394
3G-SDI
Low Power
Equalizer
LMH0376
3G-SDI
Low Power
Reclocker
LMH0387
3G-SDI
Config I/O
LMH1983
A/V Clock
Generator
What is SDI?
•
•
•
Professional video
application for
uncompressed video
production and delivery
Studio
TV station
SDI and SMPTE
• SDI is an interface for uncompressed digital video
transmission over coaxial cable
• SMPTE is a professional association which establishes
standards, practices and guideline for motion picture and
TV industry
Video quality
Standard
Data rate
Aspect ratio
Video resolution
Standard Definition (SD)
SMPTE259M
DVB-ASI
270Mbps
4:3
480i (525i)
576i (625i)
High Definition (HD)
SMPTE292M
1.485Gbps
1.483Gbps
16:9
720p
1080i
1080p
3G-SDI
SMPTE424M
2.97Gbps
16:9
1080p
SVA’s SDI Family Members
SPEED /
Family
Equalizer
EQ
Reclocker
RC
Cable
Driver
CD
Serializer
SER
Deserializer
DES
Video
Timing
VT
CONFIG
I/O
3G/HD/SD
LMH0395
LMH0394
LMH0384
LMH0344
LMH0356
LMH0346
LMH0307
LMH0303
LMH0302
LMH0340
LMH0341
LMH1983
LMH1982
LMH1981
LMH0387
HD
LMH0044
LMH0034
LMH0056
LMH0046
LMH0202
LMH0002
LMH0040
LMH0050
LMH0041
LMH0051
SD
LMH0024
LMH0074
LMH0036
LMH0026
LMH0001
LMH0070
LMH0071
Target Apps
• Broadcast video cameras, video capture, conversion,
processing, editing and distribution equipment.
• Digital still & motion (prosumer) cameras
LMH0387
Configurable I/O with Integrated Return Loss
LMH0387
Flexible I/O
Solution
BNC
Return
loss
network
EQ
Programmable
as Rx or Tx
Cable
Driver
Use a single
BNC for either
input or output
Industry’s only bidirectional SDI I/O integrates EQ,
Cable Driver and return loss networks
Rx Mode (EQ)
• Cable Reach
- 120m @ 3G
- 200m @ HD
- 400m @ SD
• 100Ω LVDS Rx outputs
• Auto sleep functionality
• Cable length indicator
Tx Mode (Driver)
Return Loss
• Fast rise/fall time (70 ps) • Integrated return loss
network
• Adjustable O/P
- 7dB margin to SMPTE
amplitude
• Excellent waveshape
specification
• Plug-and-play solution
- Faster time to market with
fewer board spins
Competitive Comparison
LMH0387
LMH0387
Config IO
Gennum
GS2984
EQ
Mindspeed
M21324
EQ
Bidirectional
(EQ & Cable Driver)
YES
NO
NO
Integrated Return Loss
YES
NO
NO
Equalized Cable Length
(meters)
3G: 120
HD: 200
SD: 400
3G: 140
HD: 200
SD: 400
3G: 100
HD: 200
SD: 400
Specifications
Green = good Green = bad
Benefits of LMH0387
• 1 IC + 1 BNC (vs. 2 ICs + 2 BNCs + 2 return loss networks)
• Meet SMPTE return loss spec with margin
LMH0394
Best-in-Class Adaptive Equalizer
Longest Reach
– 3G: 200 m
– HD: 220 m
– SD: 400 m
Lowest power
– 115mW at 2.5V
Energy efficient
– 17mW in absence of signal
GS2974B
Power Consumption
210mW
GS2984
Best combination
of power & cable
reach
M21524
150mW
LMH0394
80mW
100m
130m
3 Gbps Cable Reach
160m
200m
LMH1983
3G/HD/SD Video Clock Generator with Audio Clock
• Generates SMPTE Video (3G/HD/SD) & Audio clocks
Features
• Leading jitter performance: 40psp-p output jitter
• Low system BOM: Eliminates 3 external VCXO/PLLs
• Broadcast video cameras, video capture, conversion,
processing, editing and distribution equipment.
Target Apps
– Format converters: Provides simultaneous dual 3G/HD clocks
needed by FPGAs for format conversion (3G & 3G/1.001)
– Audio embed/de-embed: Low jitter synchronous Audio and
Video clocks generated
• Digital still & motion (prosumer) cameras
– Provides multiple top of frame pulses
LMH1983 Competitive Comparison
Specifications
LMH1983
Discrete
Implementation
Gennum GS4911
A/V PLLs
LMH1983
Integrated with PLLs
GS4911
Low cost 27MHz
VCXO ($2)
Expensive 74MHz,
148MHz VCXOs
Not needed
VCXOs
Clock Cleaners
Not needed
Not needed
Expensive clock
cleaners needed
GS4915
Overall BOM cost
Design Implementation
Output jitter
Green = good Green = bad
Low
High
High
Minimal FPGA
programming
Extensive FPGA
programming to
optimize loop
parameters
Minimal FPGA
programming
40ps
Variable
240ps

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