LM2904: LM2904 max output current

Hi Vladimir,

you might also want to have a look at this appnote:

appnote50.pdf

Kai

Dear Kai, thank you
Generally speaking, the circuit using LM2904D and LOC110 works quite well for me too - I have already tested it. Just doubt the output current of LM2904D. I would not want to use an expensive amplifier.

A newer (and also cheap) op-amp that you could look at is the TLV9002. It will support 12mA output current and doesn't have some of the other quirks that come with using the LM2904. The LM2904 can provide 12mA output current but you will also take a significant hit on the output swing.

Best,
Paul

Hi Vladimir,

the LM2904 IS a very good OPAmp, but it's a dino...

According to figure 8 of datasheet the maximum output voltage at 10mA source current is 3.5V typically, when using a supply voltage of 5V.

Kai

Hi Vladimir,

The LM2904 will be able to provide 12mA output current, but you will have to see if the output swing limitation is too much for your application and there may be some concerns over temperature as well.

From your schematic, it looks like you're sourcing current, which is the better direction to have the LM2904 provide current. The sink characteristic is a little worse. I would also recommend that you take a look at this app note which describes some of the quirks of this part:
www.ti.com/.../getliterature.tsp

Best,
Paul

Dear Paul,
Dear Kai!
Thank you.

Output voltage of LM2904D will be no more than 3V in my case. The output current will be no more than 10 mA.

Sincerely,
Vladimir Naumenkov
www.agat.by