I want to use TLE2426 for CMOY power rail splitter.

I am not sure of its device name designation. While I know C, I and M indicates temperature tolerance, what is E4?

For example,

TLE2426IP
TLE2426IPE4

I have looked into its datasheet but no information about 'E4'. Is it an optional pin for noise reduction?

Keep us posted on your progress!

Thanks jazzy939. A chat with you twitched my senses for more DIY amps

both are the same PDIP (8 pin IC) package. Get the cheaper one.

Most likely different batches.


Btw do take note that these are PDIPs, not the usual TO-92 most designers choose to use. You can modify it very easily by clipping off the unnecessary pins and bend the other three pins you want straight to simulate a TO-92.


All PDIP TLE2426 have noise reduction pin. It's probably used as a rail to ground filtration. If you're already having caps rail to ground after the TLE2426, you won't really need to use this.

This post has been edited by LittleGhost: Dec 3 2010, 01:56 PM

I getting free from TI, so whichever doesn't really matter.

I'm comfortable with PDIP, no problem.

Need another advice from you guys, I want to use a microcontroller (PIC16F887) to be in charge of gain or volume. While I guess there must be some chip that takes digital signals and control its passing analogue signal, any idea which chip is available for our use?

PGA2310

If you like high end volume control, give a wait for AMB's δ1 article!
http://www.amb.org/forum/delta1-relay-base...board-t439.html

Or here:
http://www.flickr.com/photos/linux-works/4549698704/

Interesting links chchyong! Thanks!

Thanks. I swear I should have asked much earlier. Didn't know we have great resource here.

Anyway, I actually remember seeing a very simple chip which simply modifies the volume by its a input signal voltage. PGA2310 is quite complex. Have you used it successfully?

Looks nice and I'll be waiting for his full description once it's done

Maybe it's the inferior DS1802. You can interface your PIC ADC to track an analog pot (can be mono), and then interface it to the DS1802. Problem is that it does not perform as well as other options. Thing with the DS1802, it's also very easy to use without a PIC if you only use push buttons.

Honestly since you know how to use a PIC, go with better chips. In fact, just like what I did in the past while being amazed by the PICO amp with the digital pot, head over the big sites and run through their catalog. You'll be surprised by how many different chips that can cater to your needs if you're well versed in using the PIC.



For people like me who prefer big ass amps, small chip digital pots are not favorable when you can use a set of relays with matched resistors instead. This is of course a superior option however it takes up a lot of space. Also, most if not all digital pots are simply opamps with variable gain. I don't like my signal to go through a lowly OPA2132

Okay, sounds convincing. I'll make an order of PGA2310 tomorrow. It's do-able but it just seems to take several IO ports of my PIC already. Well, for the sound quality, worth a try.

If using DS1802, cant obtain the maximum setting for this PGA2310. The DS1802 just provides 64 steps.. But PGA has 255 steps.. Hmm need configure PIC in SPI mode interface...

This post has been edited by mess o' wrecko: Dec 8 2010, 04:00 PM

SPI no problem for modern PICs

is there a link where I can learn how to make an amp

here you go:
http://www.google.com.my/search?sourceid=c...ie=UTF-8&q=cmoy

so ma huan :\

Not really, if you can case it nicely and have a
very good marketing skill, you can commercialize
it and sell at RM799 like others did.

the ma huan is the most enjoyable part of the process

i mean the mahuan bout the buying the stuff
>.>
somemore no place to solder