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Making a 40db log amplifier

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mhtplsh

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I want to make one 40db log amplifier. Kindly suggest the circuit.
 

Re: log amplifier

i dont understand what u r trying to ask....... log amplifier gives the log value of a input..... can u make ur question a little clear.....
 

Re: log amplifier

just look ;
Analog Devices AD8307 logarithmic amplifier
i want to do almost similar with readily available components.
 

Re: log amplifier

well
so you want to design an log amplifier with 40 dB swing.........
are you trying it out with discrete components or Hspice, Pspice models and other things...........
 

Re: log amplifier

I got one circuit with transistors & ic's. Then single IC circuit like above can also be used provided the IC is available. Hence was looking for some options from fellow members.
 

Re: log amplifier

check out this link...........


**broken link removed**


it is relevant to ur doubt and its discussion has been centred on the dynamic range so it would aid u to understand better........... i think this would clarify your doubt........
 

log amplifier



I think this will help u, good luck.
 

Re: log amplifier

**broken link removed**

The topic or post you requested does not exist (it was removed)



**broken link removed**[/quote]

This r commercial units & r available in min 2 ghz. I can make detector & hence simple log amplifier can also do the job as mentioned with the above IC.
 
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Re: log amplifier

try here
**broken link removed**
 
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