LMH1983SQ/NOPB

The Texas Instruments LMH1983SQ/NOPB is a programmable audio/video (A/V) clock generator designed for broadcast and professional applications. This device integrates multiple PLLs to generate simultaneous A/V clocks, supporting standards like SMPTE serial digital video (SDI) and digital audio AES3/EBU.

Key electrical specifications include a 3.3V single supply operation and an I2C interface for control. The device operates across a temperature range of -40°C to 85°C. It features four PLLs for flexible clock generation, including specific frequencies for PLL1 (27 or 13.5 MHz), PLL2 (148.5 or 74.25 MHz), PLL3 (148.5/1.001 or 74.25/1.001 MHz), and PLL4 (98.304 MHz).

Packaged in a 40-WQFN (6x6) format, the LMH1983SQ/NOPB is designed for surface mount applications. It offers features such as flexible PLL bandwidth optimization, soft resynchronization, and digital holdover or free-run on loss of reference. Status flags are provided for loss of reference and PLL lock.

This clock generator is suitable for applications requiring stringent output jitter specifications, making it ideal for any SDI transmitter. Its integrated nature helps replace multiple PLLs and VCXOs typically used in professional video and audio systems.