HMC3653 Reverse Isolation when power is off

Hi Ivan,

                  The measurement you request has not been taken. I'm assuming you mean dc power, not RF power correct? It's not something that would be normally considered as part of normal operation of the amplifier.

Regards,

Jim B

Hi Jim,

Sorry for this confusion. I meant S21 graph at Vcc=5 V, Vpd=0 V. Do you have such measurements?

Regards,
Ivan

Hi Ivan,

               The condition with VPD = 0 and VCC = 5V was not measured. I do have data with VPD varied from 4.5 V to 5.5 V. 

I have attached that data.

When VPD = 0V, ICC = ~4mA, so the Part is turned off an essentially there is no gain.

Regards,

Jim B

PDF

Hi Jim, Thank you!

Is there any chance that you could measure S21 vs frequency at Vcc=5 V, Vpd=0 V?

Regards,
Ivan

Hi Ivan,

                I don't have a board available so, it may be a week or so to get the data.

Regards,

Jim B

Hi Jim,

I'll be glad if you could measure and get the data.

Regards,
Ivan

Hi Ivan,

                  I found a board in the cabinet. 0V VPD data is attached

Regards,

Jim B

HMC3653_VPD_0V.S2P

Hi Jim,

Thank you! I would like to get turn on and turn off time when toggle Vpd. Could you please provide it as well?

Regards,
Ivan

Jim, Don P knows how to do this measurement. He just did it for me for another part using ADL6012 to detect the output envelope, probably still set up in the lab

Hi Ivan,

               I Will have the turn on turn off time using VPD measured. Is there a particular frequency I should target for the RF?

Regards,

Jim B

Hi Ivan,

               I Will have the turn on turn off time using VPD measured. Is there a particular frequency I should target for the RF?

Regards,

Jim B

Hi Jim,

There is no matter which frequency can be used for the measurements.

Regards,
Ivan

Hi Jim,

Were you able to take turn on/off time vs Vpd toggled measurements?

Regards,
Ivan

Hi Ivan,

                  This is currently being worked on. I will post the data once the task is completed.

Regards,

Jim B

Hi Ivan,

                  Attached is the pulse measurement you requested. Not sure why there is a dip in the RF pulse. Couldn't resolve it.

Regards,

Jim B

PDF