A good PCB layout for the LMH6626MA/NOPB involves keeping the input and output traces short and separate, using a solid ground plane, and placing decoupling capacitors close to the device. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane and a dedicated ground plane.
The choice of output filter components depends on the specific application requirements. A good starting point is to use a 2nd-order LC filter with a cutoff frequency around 10-20 times the output frequency. The values of L and C can be calculated using the equations provided in the datasheet or by using online filter design tools.
The maximum power dissipation of the LMH6626MA/NOPB is around 1.4W. To ensure it doesn't overheat, make sure to provide adequate heat sinking, such as a thermal pad or a heat sink, and keep the device in a well-ventilated area. Also, ensure that the device is operated within the recommended operating conditions and that the input voltage is within the specified range.
Yes, the LMH6626MA/NOPB can be used as a VCO by applying a control voltage to the Vtune pin. The frequency of oscillation will vary with the control voltage. However, the device is not optimized for VCO applications, and the frequency tuning range may be limited. For a dedicated VCO application, a specialized VCO device may be a better choice.
The LMH6626MA/NOPB has a synchronization input (Sync pin) that can be used to synchronize the device with an external clock source. The Sync pin can be driven by a logic-level signal, and the device will synchronize its output frequency to the external clock frequency. The synchronization range is typically within ±10% of the nominal output frequency.
LMH6626MA/NOPB datasheet
by Texas Instruments
