TI LMH1228RTVR

The LMH1228 device is a 12G UHD - SDI low - power dual - output cable driver with a clock recovery unit. It supports SMPTE video rates up to 11.88Gbps, thus enabling a highly integrated and high - performance solution for ultra - high - definition video in 4K/8K applications. There are a variety of clock and data recovery (CDR) circuits, so the on - chip clock recovery unit can automatically detect and lock to various SMPTE video rates up to 11.88Gbps. Another clock - recovered 100Ω driver output on the host side can be used for monitoring or signal distribution purposes. The on - chip clock recovery unit can attenuate high - frequency jitter and completely regenerate data using a clean, low - jitter clock. This clock recovery unit has a built - in loop filter and does not require any input reference clock. The LMH1228 also features an internal eye - diagram opening monitor and programmable pins to enable CDR lock indication, input signal detection, or hardware interference, thereby supporting system diagnosis and board startup. The LMH1228 operates from a single 2.5V power supply. It comes in a small - size 5mm × 5mm 32 - pin WQFN package. The LMH1228 is pin - compatible with the LMH1208 (12G dual cable driver).

• 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 clock recovery locked to SMPTE rates of 11.88Gbps, 5.94Gbps, 2.97Gbps, 1.485Gbps, or 1/1.001 divided sub-rates and 270Mbps
• Integrated Eye Opening Monitor (EOM)
• Dual differential output cable drivers
• On-chip 75Ω termination and return loss compensation network
• Adaptive PCB input equalizer
• Clock recovery 100Ω loopback output
• Automatic slew rate control on 75Ω outputs
• Automatic pre-emphasis and output amplitude on 75Ω outputs
• Programmable de-emphasis and output amplitude on 100Ω outputs
• Polarity inversion on 75Ω and 100Ω outputs
• Automatic power-saving mode with no input signal, power consumption: 25mW (typical)
• Power-down control via enable pin
• 2.5V single supply, power consumption: 305mW (typical)
• Programmable via pin, SPI, or SMBus interface
• Operating temperature range: -40°C to +85°C
• 5mm×5mm 32-pin WQFN package

• SMPTE-compatible serial digital interface
• UHDTV/4K/8K/HDTV/SDTV video
• Broadcast video routers, switches, distribution amplifiers, and monitors
• Digital video processing and editing