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Double HMC797APM5E with HMC980LP4E bias controller

Question asked by MarcZ on Oct 27, 2017
Latest reply on Nov 16, 2017 by MarcZ

Hi everyone,

 

I would like to design a circuit with 2 x HMC797APM5E with 2 x bias controllers (the right one seems to be the HMC980LP4E).

 

This is my needs :

- Amplify DC to over 20GHz signal

- Input : 0 to 350mV and need an output 0 to 5Vmin (so P1dB min +24dBm)

- Would like the cleanest signal as possible, stay in linearity part.

 

No single amplifier is capable of doing this Gain for this Band, so I need to do a daisy chain with 2 amplifiers. The HMC797 seems to be the right choice.

 

I read in documentations and application notes that an active bias controller ensures a proper sequencing, level and security for the amplifier.

The application note AN-1393 is very helpful with some example circuits (http://www.analog.com/media/en/technical-documentation/application-notes/AN-1363.pdf )

 

What circuits of this application note should I follow to make it work with the HMC797? 

Perform a daisy chain using the TRIGOUT of the first HMC980, is this the right thing to do?

What would be your precautions for this kind of circuit?

 

Thank you very much,

Marc

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