Hello,
I’m currently designing a biasing circuit for the HMC943APM5E and have a couple of questions regarding gate current (Ig), which I couldn’t find specified in the datasheet.
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Gate Current Information Missing?
The datasheet doesn’t specify the gate current (Ig), which is typically necessary for properly designing a bias circuit. My current biasing circuit is capable of handling up to 300 mA for Gate current Ig.
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Is this sufficient?
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Does the absence of Ig in the datasheet imply that it is negligible or doesn't matter ?
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Am I misunderstanding something in terms of how Ig should factor into the design for this device?
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Gate Current Control Without Performance Impact
Assuming Ig is non-negligible, is there a recommended method to limit or control gate current without degrading the amplifier's performance? For example, would using a series resistor or current limiter on the gate line negatively impact stability or linearity?
I’d appreciate any clarification or design recommendations based on experience with this part.
