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DATA SHEET
LMH1297 12G UHD-SDI Bidirectional I/O With Integrated Reclocker
1 Features
- User-configurable adaptive cable equalizer or cable driver with integrated reclocker
- Supports ST-2082-1 (12G), ST-2081-1 (6G),
ST-424 (3G), ST-292 (HD), and ST-259 (SD) - Compatible with DVB-ASI and AES10 (MADI)
- Integrated reclocker locks to SMPTE rates of 11.88 Gbps, 5.94 Gbps, 2.97 Gbps, 1.485 Gbps, or divide-by-1.001 sub-rates and 270 Mbps
- On-chip 75-Ω termination and return loss compensation network
- EQ (equalizer) mode:
- Adaptive cable equalizer with integrated reclocker
- 100-Ω output driver with de-emphasis
- Reclocked 75-Ω loop-through output
- EQ mode cable reach
(Belden 1694A, SDI_OUT disabled):
- 75 m at 11.88 Gbps
- 120 m at 5.94 Gbps
- 200 m at 2.97 Gbps
- 300 m at 1.485 Gbps
- 600 m at 270 Mbps
- Cable driver (CD) mode:
- Dual differential output cable drivers with integrated reclocker
- Adaptive PCB input equalizer
- Reclocked 100-Ω loopback output
- Automatic pre-emphasis and slew rate control on 75-Ω outputs
- Polarity inversion on 75-Ω and 100-Ω outputs
- Automatic power save in absence of input signal
- Power dissipation: 25 mW (typical)
- Power-down control through ENABLE pin
- Single 2.5-V supply
- EQ mode power dissipation: 275 mW (typical)
- CD mode power dissipation: 305 mW (typical)
- Programmable through pins, SPI, or SMBus interface
- –40°C to +85°C operating temperature range
- 5-mm × 5-mm, 32-Pin QFN package
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