Working with the ADPA1107 in a pulsed drain configuration. I need to create a -2.7V bias for the gate.
Is there a recommended way to achieve this bias voltage and have it as stable as possible?
Thus far I have been trying to do this with a switch-mode DC-DC converter however the switching noise is a problem. The current supply I am using has at best about 250mV (peak to peak) of switching noise. I am worried that this will be a problem in operation as there is only a small margin for the gate bias before it reaches its "off" condition. Also will the switching noise damage the amplifier? or will the RF gain become a function of these voltage transients?
Thanks