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LM358 alternative

I use the LM358 by the bucket load because they are cheap. I also use the LM358A for the better offset voltage spec.

I'm always on the look out for an alternative with lower offset that is still cheap. I've just come across the LM2904A/LM2904AV from TI. The V version runs at 32V same as the LM358. The offset voltage is better, 1mV typical compared to 3mV and worst case 2mV as opposed to

7mV for the LM358. Basically the same spec as the LM158A.

They are cheap as well. We pay about $0.07 for the LM358 and these are $0.09.

Reply to
Raveninghorde
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Not all of us have the luxary to buy at mass volume to get that price!

Jamie

Reply to
Jamie

For the price, the LM358 is likely the best. LM358 and LM2904 are identical except for max voltage allowed. There is a Fairchild datasheet that covers both. The LM258 has a slightly lower offset. If you really need lower offset then join the 21st century since about any modern device will do. Most are now SOIC-8. A LM358 replacement with better specs would be OPA2277 for just one example.

Reply to
bw

et.

y

le.

LM358 is just half an LM324. The LM2904 looks like it's just an automotive qualified LM358.

Reply to
Fred Bloggs

You can buy the LM358M for $0.06 apiece if you're willing to buy $150 worth. Not exactly a king's ransom.

Best regards, Spehro Pefhany

--
"it's the network..."                          "The Journey is the reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com
Reply to
Spehro Pefhany

Who is giving that price? (please, please, please..)

Reply to
David Eather

TI's website lists LM358ADR for $0.11 @ 1K.

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The LM2904AV list price was actually higher, $0.21. So, there might be some negotiation room in both.

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If you want something gorgeous and totally NOT affordable, consider the LT1013:

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Vo =3D 150uV (max), etc.

-- Cheers, James Arthur

Reply to
dagmargoodboat

As I stated TI do better versions of the LM2904:

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OPA2277 is over 10x the cost of the LM2904AV. It's too expensive for a lot of applications.

You're forgeting the definition of engineering. An engineer does for a dime what any idiot can do for a dollar.

Reply to
Raveninghorde

These guys:

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I've bought from them before.

Best regards, Spehro Pefhany

--
"it's the network..."                          "The Journey is the reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com
Reply to
Spehro Pefhany

Can you be sure of what you're buying?

Reply to
krw

Don't know, but what I did buy from them (a couple thousand dollars worth of Fairchild optos) was okay.

Reply to
Spehro Pefhany

Thanks

Reply to
David Eather

A reel of floor-sweepings can ruin your whole day.

Reply to
krw

BTDTGTTS. 8-( And dealing with Chinese and other offshore sources can ruin more than your day. Counterfeits, old parts, deliberately mixed wrong parts, etc. etc. I once got a shipment of PCB-mount fuseholders from Taiwan that literally had scrap metal floor sweepings added the bag to make up the weight.

AFAIK, those guys are legit. Here's their line card:

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Anybody else deal with them?

Reply to
Spehro Pefhany

On a sunny day (Tue, 20 Sep 2011 14:06:20 -0400) it happened Spehro Pefhany wrote in :

OTOH I just got some beautiful graphics LCDs from China. Blue dots on white backlight. But expensive. Wired it up, the backlight is so bright that I switched it of again, have to read that datasheet again, maybe I am putting in too much current in the LED backlight, +5 - 75 Ohm - LCD - ground. ??? White LEDs getting better too? Drops 1.56 V over 75 Ohm makes 20 mA??? The green ones need > 300mA for this sort of brightness. Good stuff.

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Ordered Sept 12, dropped in the mailbox today Sept 20. I am impressed.

Reply to
Jan Panteltje

Not in my place, it seems lately it's quite the opposite! ;)

Jamie

Reply to
Jamie

I found some at Mouser for 0.16 , that's the beast I could do.

Jamie

Reply to
Jamie

LM324s are usually almost the same price and have twice as many (crappy) op-amps in one package. Often under a dime in moderate quantity.

Best regards, Spehro Pefhany

--
"it's the network..."                          "The Journey is the reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com
Reply to
Spehro Pefhany

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