jayleung
Member level 5
a question for pcb
Hi, everyone. I have a question about the PCB layout for a 3-stage single chip PA.
As shown in the attached picture, the PA is in QFN package, with 3 stage amplifier inside. Each stage has its own gate and drain pins.
In order to reduce the footprint area, I would like to connect all gate pins together, as well as connect all drain pins together, so can I just add one set of the by-pass capacitors, like in (b), to the gate and to the drain pin? Since the DC power to each gate or drain is the same, one set of the by-pass capacitor would be enough for filtering?
Also, can I just make the PCB layout like (c)?
Hi, everyone. I have a question about the PCB layout for a 3-stage single chip PA.
As shown in the attached picture, the PA is in QFN package, with 3 stage amplifier inside. Each stage has its own gate and drain pins.
In order to reduce the footprint area, I would like to connect all gate pins together, as well as connect all drain pins together, so can I just add one set of the by-pass capacitors, like in (b), to the gate and to the drain pin? Since the DC power to each gate or drain is the same, one set of the by-pass capacitor would be enough for filtering?
Also, can I just make the PCB layout like (c)?