Part Number: LOG104 Other Parts Discussed in Thread: OPA2335 Hi,
I would like to ask you a question about LOG104 application circuit, datasheet Page7 Fig8.
The circuit is designed with OPA2335.
My customer has been evaluating this circuit and get "16uA…
Other Parts Discussed in Thread: LOG104 Dear Sirs,
I've got an idea of improving an existing electronic part: Log104, a precision logarithmic amplifier from Burr-Brown. I came to Log104 while searching for an exponential (or antilog) converter needed…
According to the TI website, one of the features of this chip is the antilog computation. However, I don't see that it's possible when I go to the datasheet. Are there any application circuits to obtain an exponential output from this chip?
Hi Sneha,
The LMP7721 is the only option right now. It’s a CMOS process, but this is a great part.
If you are looking for log amplifiers, please take a look in LOG101 , LOG104 and LOG114 parts.
If you have additional questions, please let us know. …
Part Number: LOG112 Other Parts Discussed in Thread: LOG104 , LOG114 , LOG101 Hello everybody,
I want to use a logarithmic amplifier (LOG104, LOG104, LOG112, etc) but it seems that there is some discrepancies about le log conformity error calculation in…
Other Parts Discussed in Thread: LOG114 , LOG101 , LOG104 Are we able to offer similar functional device compared to MAX4206ETE Transimpedance Logarithmic Amplifier ?
Hello Thomas,
thank you for the detailed answer. I will opt for LOG2112 then. It seems to be an enhanced version of LOG104 with 2 amplifiers and a internal reference. 100 Hz bandwidth is just fine for me.
Best regards,
Dmitri
Hi Jane,
Unfortunately, I don't believe there is an alternate pin-to-pin compatible device to the LOG102A.
In addition to the LOG112, other logarithmic amplifiers are the LOG101, and LOG104 although they are not equivalent.
Best Regards,
Lui…
Hello Ke Su,
The LOG amplifiers from the Precision Amplifiers product group, such as the LOG104, LOG112 and LOG114, do not have Mil-Spec versions. There is one LOG amplifier product, the TL441 that does have enhanced performance and military versions…
Hello Richard,
The LOG112 datasheet output voltage including error terms is listed in Eq. 9 as:
While for the LOG114 it listed in Eq. 20 as:
The LOG112 gain term is 0.375, while the LOG114 gain is 0.5 which is correct for each model. The LOG112 includes…
