Texas Instruments provides a recommended PCB layout in the datasheet, but it's also recommended to follow general high-frequency PCB design guidelines, such as using a solid ground plane, minimizing trace lengths, and using 50-ohm transmission lines for RF signals.
Proper biasing is critical for the LMX2522LQ1635. Ensure that the VCC pin is connected to a stable 3.3V power supply, and the V Tune pin is connected to a suitable tuning voltage (typically 1.2V to 2.4V). Also, make sure to follow the recommended biasing circuitry and component values provided in the datasheet.
The LMX2522LQ1635 is designed to handle up to 20 dBm of output power. However, the actual power handling capability may vary depending on the specific application, PCB layout, and thermal management. It's recommended to consult the datasheet and application notes for more information on power handling and thermal considerations.
The LMX2522LQ1635 is a programmable PLL synthesizer, and its frequency band can be programmed using a 3-wire serial interface. The device can be programmed using a microcontroller or a dedicated programming tool. Consult the datasheet and programming guide for more information on the programming protocol and register settings.
The LMX2522LQ1635 is designed to provide excellent phase noise performance, with a typical phase noise of -100 dBc/Hz at 10 kHz offset from the carrier frequency. However, the actual phase noise performance may vary depending on the specific application, PCB layout, and operating conditions. Consult the datasheet and application notes for more information on phase noise performance.
LMX2522LQ1635/NOPB datasheet
by Texas Instruments
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