AnsweredAssumed Answered

Biasing HMC460LC5

Question asked by jpb124 on Oct 24, 2016
Latest reply on Nov 3, 2016 by kkaya

I am having an issue biasing the HMC460LC5.

First, after setting both the gate and drain voltages to 0V, when I decrease the gate voltage towards pinchoff, the gate current increases to 14mA  by the time I get to -2V which is well beyond its rated max 2.5mA.

 

Second, If I continue and try to set the drain voltage, the drain current increases as I increase the voltage. It goes beyond the 75mA operating bias current well before reaching the 8V bias voltage, around 5V.

 

I am using the Hittite eval board with 50ohm terminated RF in and out.

Did I damage the part and now it's not functional or am I doing something wrong?

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