LMK04821NKDR – TEXAS INSTRUMENTS

The Texas Instruments LMK04821NKDR is a highly integrated, low-jitter, multi-channel clock synthesizer optimized for high-performance applications demanding precise clock distribution. This device features four independent, low-noise fractional-N synthesizers, each capable of generating frequencies from 1MHz to 1000MHz with a typical jitter performance of <120fs RMS. Each synthesizer incorporates a programmable output divider allowing for flexible frequency scaling. The device operates from a 3.3V single supply voltage and draws a typical current of 140mA. It's packaged in a 64-pin, 10x10mm QFN package._x000D_ _x000D_ The LMK04821NKDR's key advantage lies in its ability to generate multiple, precisely synchronized clock frequencies from a single reference, eliminating the need for multiple crystal oscillators and reducing overall board space. This makes it ideal for high-speed data converters, multi-standard communication systems (e.g., 5G NR, WiFi 6E), and other applications requiring extremely accurate and low-jitter clock signals. Its integrated features, such as spread-spectrum clock generation for EMI reduction, further enhance its suitability for demanding environments. Careful consideration should be given to the device's output drive capability and termination requirements when integrating it into a design.