General Description. The AS and AS are junction isolated ultra well- matched monolithic NPN transistor pairs with an order of magnitude improvement in. LM/LM Supermatch Pair. General Description. The LM and LM are junction isolated ultra well- matched monolithic NPN transistor pairs with an. LM datasheet, LM circuit, LM data sheet: NSC – LM/LM Supermatch Pair,alldatasheet, datasheet, Datasheet search site for Electronic.

Author: Tutilar Dusho
Country: Ecuador
Language: English (Spanish)
Genre: Technology
Published (Last): 11 March 2009
Pages: 47
PDF File Size: 9.1 Mb
ePub File Size: 11.30 Mb
ISBN: 189-5-36693-328-1
Downloads: 63941
Price: Free* [*Free Regsitration Required]
Uploader: Goshicage

TI still lists the part in their catalog, but designates it as obsolete.

TI isn’t making the part at all as far as I can tell. Octopart is not comprehensive. What is the new standard log amp circuit? Search the directory for faculty or staff members.

ECE Store | Electrical and Computer Engineering | USU

Soldering Tips Lm39 Link: You have to find the dealer in Moscow can find an email or phone in case someone need it. There is no commitment that if you design it in to your circuit, you will be able to purchase it later.

The transistors might be on separate dies for all I know.


How can I cheaply make a logarithm? MikeJ-UK 5, 11 ratasheet TI still sells some Burr Brown log amps but they are expensive. That would more-or-less be an interpolation between 3dB values.

Prices are subject to change without notice. You can also see open positions in the department. Joseph Perkins 1 1.

LM Datasheet, PDF – Alldatasheet

Intersil makes a number of transistor arrays some are certainly single die and well matched. The specs are identical to the original. I don’t know what the definitive chip is but there are many chips that implement the whole circuit. The traditional logarithmic amplifier circuit is described in National Appnote Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site the association bonus does not count.

As usual, Maxim parts do not exist. MAT12 is still in production, but octopart.

They are just listing the National Semi datasheet as a courtesy since they bought National. Engineering Program is catasheet by: This circuit uses the difference of two transistor currents to generate the log of the input over a pretty wide range.

Chris Johnson 7 ddatasheet For details on these services, please click the appropriate link from the menu datasneet the left. Open Positions To see a list of open positions, click here. Spring Semester, Monday — Friday: In addition to supporting the various labs in the EL building, we also provide equipment and manual check-out and a wide range of electronic components for sale.


This circuit looks to be a log amplifier using two op-amps, two transistors, a few passives and a current source. Welcome to the ECE Store.

This is probably not the way to go unless there is a need for an LED bargraph in the circuit already. It seems that this is not recommended for new designs but the replacement is the MAT Facilities Lab Research in the department is conducted in a variety l3m94 laboratories equipped with state-of-the-art equipment, with research funding coming from federal, state, and private sources.

Welcome to the ECE Store

To see a list of open positions, click here. Home Questions Tags Users Unanswered. You can find them here But the plant does not sell them directly. I had this idea for a quick and dirty log amp.