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Is it possible to make a Logarithmic Amp with operating bandwidth of multiple gig Hertz?

user5035537
Prodigy 10 points
Other Parts Discussed in Thread: LOG114

I was trying to contact the customer support for availability of an ultra-wide-band Log Amp, the available ones are operating with max frequency of several tens of MHz. What are the challenges/opportunities we have to build a log amplifier to provide log operation of an input signal ranging from 100MHz to 7 or 9 GHz?

Note this is required to be a log amplifier (like LOG114), not a log detector like the ones used in power estimation and RSSI of microwave or radar systems.

  • 0
    TI__Genius 11135 points
    Mustafa

    We don't have anything that will operate in that frequency range and its unlikely anyone else has a solution either. This is a difficult circuit design...that's why we don't have one yet.

    Sorry we couldn't be more help.

    Dennis