LMK04828BISQ/NOPB – TEXAS INSTRUMENTS

The Texas Instruments LMK04828BISQ/NOPB is a highly integrated, low-jitter, multi-channel clock synthesizer optimized for high-speed serial data applications. This device features four independent, low-noise fractional-N synthesizers, each capable of generating clock frequencies up to 1.5 GHz with a typical jitter performance of <100 fs RMS. The LMK04828 operates from a 2.5V to 3.3V supply voltage and incorporates integrated voltage regulators, simplifying power supply design. It's packaged in a 64-pin, 7x7 mm QFN (quad flat no-lead) package, marked with the 'NOPB' suffix indicating lead-free, RoHS compliant construction._x000D_ _x000D_ Key advantages include its exceptional phase noise and jitter characteristics crucial for high-bandwidth applications like 100GbE, PCIe Gen 5, and high-speed ADC/DAC interfaces. The independent synthesizer channels allow for flexible clock distribution and precise frequency generation for multiple data streams, minimizing system-level jitter accumulation. Its integrated features, including spread-spectrum clock generation, further enhance EMI performance. The LMK04828's small form factor and low power consumption make it suitable for space-constrained designs requiring high clocking precision. Designers should note that achieving optimal performance requires careful consideration of PCB layout and termination techniques to minimize signal integrity issues at high frequencies.