3 Gbps HD/SD SDI reclocker for broadcast video chains
The Texas Instruments LMH0356SQ/NOPB is a 3 Gbps HD/SD SDI reclocker designed for professional video equipment handling SMPTE serial digital interfaces and DVB-ASI transport streams. It sits in the signal chain after the cable equalizer and before the deserializer, cleaning up jitter and retiming the data to restore eye-diagram margin. The part operates from a 3.135V to 3.465V supply and is configured through a serial control interface.
48-WQFN with exposed pad — layout and thermal notes
The package is a 48-lead WFQFN with an exposed thermal pad, 7x7 mm body (48-WQFN). Surface-mount only. No special moisture sensitivity level is stated in the listing, but a standard MSL 3 bake-and-bag process is prudent for a QFN of this pitch.
Supply rail tolerance matters for jitter performance
The specified supply range is 3.135V to 3.465V — a tight ±5% window around 3.3V. A clean, low-noise 3.3V rail is expected; any regulator feeding this reclocker should have decent accuracy and ripple rejection. The serial control interface (SPI-compatible) handles register writes for mode selection and status monitoring.