Logarithmic Amplifier Symbol
The following table summarizes the details of this symbol.
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Description
|
-
Output voltage is the natural logarithm of the input voltage.
-
Uses the natural logarithm.
-
The use of
|Vin|avoids the logn(-V) problem. -
If Vin is equal to zero, Vin
= E-9 is used to avoid logn(0). -
Because logxA
= lognA / lognX, obtain
logxA = lognA/logx by using a gain block (amplifier) set to 1/lognX.
|
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Library name
|
logAmp
|
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Transfer function
|
|
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Properties (Defaults)
|
None
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Input impedance
|
Infinite
|
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Output impedance
|
Zero
|
|
Frequency response
|
Flat
|
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