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# Antilog

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log and antilog
15 Threads found on edaboard.com: Antilog

## analogue divider circuit needed

log(V1/V2)=log(V1)-log(V2)=D 100*antilog(D)=100*(V1/V2) search for logarithmic and anti logarithmic amplifier circuits or ICs.

## Analog Exp (Antilog) vs Log

I don't see a log function plot in the third curve, only y = -exp(-x). It would be of course generated by an antilog circuit, as you apparently did. Nice try to fool people at edaboard.

## verilog code of logarithmic function

I want to write verilog code ,of mathematical function like log(x),x^y,antilog(x),sin or cosine function....how i can write?

## About designing an op-amp circuit where Vout will be the root of input voltage.

In Pspice, a square root circuit can be easily "designed" by using ABM (analog behaviour modelling). For a real hardware circuit, you can refer to analog multipliers, see an example in the AD633 datasheet Or use a suitable combination of log/antilog circuits. The basic conce

## Period to frequency convertion in pic microcontrollers

The fast way is to... take the logarithm of your number. (Any base) Subtract from zero (the log of 1). Or change the sign. Take the antilog. This gives you the reciprocal of your original number. It's easier if your pic has a logarithm table.

## Help me with a voltage division circuit

There are basically two types of analog dividers: - based on four quadrant multipliers (e.g. AD734) - based on log/antilog circuits The log/antilog designs are slower and restricted to single quadrant operation but offer a higher dynamic range. AD538 is an example of an integrated version, but this circuits can be also build from OPs and trans

## exponential curve to linear curve circuit implementation

The log/antilog circuit doesn't work as shown and the transfer characteristic isn't calculated correctly. It would work for sqrt(x*y). But to calculate x*y, the adder must have a gain factor of 1 for both inputs. So the output has an unwanted offset of 1*Vbe. For a temperature indepent log/antilog multiplier, you need a third log stage with a const

## Need matched pair transistor

Hai all, I am looking for Quad matched pair transistor for analog divition. Need minimum 3 matched pair, two for log and one for antilog. I found MAT14, Do you have any other part, Thanks Grittin

## Circuit of Antilog Amplifier.

In logarithmic or antilogarithmic Amplifier using OPAMP (IC 741) sometimes we use a diode and sometimes we use a transistor.. Which one is mostly used?? Please explain..

## What is the simplest analog divider circuit?

an arithmetic divider that operates ideally at any frequency Keep on dreaming. From the existing analog multiplier/divider variants, only "gilbert cell" (gm multiplier) is wideband. Log/antilog offers higher dynamic range but is restricted to MHz bandwidth at best, hall sensor multipliers (rather unusual) possibly achieve a sim

can anyone say me how to realize log and antilog in same fpga hardware using lookup table(LUT),interpolation steps.please send me the codes and other detail to execute my final yr project.

## How to design nonlinear functions in cmos

hi! i know of no paper but op amps with diodes produce nonlinear outputs. try searching for log and antilog amps in google. Ü - al

## multiplication function by Op Amp. HOW!

Hi Abo_Ayat, I assume you need "true" multiplication, i.e., not for modulation/demodulation or similar applications. One method is using logarithmic amplifiers for both signals, then summing and finally an antilog amplifier. This method uses Op Amps and external transistors. Regards Z

## Log & Antilog amplifiers

Hi all, I have some questions related to log and antiloge amplifiers. 1- how does the log and antilog amplifier circuits look like? 2- what does the two circuits do? 3- how does the circuits work? 4- the applications of both log and antilog amplifiers? 5- examples of where we can find these circuits? I hope to hear from you soon

## logarithmic amplifier and antilog amplifier

hi there, please help me, what is wave form from the output signal of logarithmic amplifier and antilog amplifier? where do we use those kinds of amplifier? what makes them called logarithmic and antilog amplifiers? thank you :)