LMH1297

LMH1297 SNLS545E – MARCH 2017 – REVISED JULY 2022 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 2 App...