NE5534N versus NE5534NG?

pulse_divider · Post by **pulse_divider** » Thu Dec 27, 2007 10:48 am

I'm about to buy some spare chips for my board. It uses NE5534N throughout but on Mouser they have NE5534NG.
Are these the same form factor? Any problems with using these?
Thanks.
---Ben

inverseroom · Post by **inverseroom** » Thu Dec 27, 2007 11:36 am

According to this datasheet--

http://www.datasheetarchive.com/pdf/3871437.pdf

--the "G" version is lead-free! Otherwise they're the same package.

pulse_divider · Post by **pulse_divider** » Thu Dec 27, 2007 2:06 pm

Cool, thanks!
I was trying to download the datasheet off Mouser but it was timing out on me...

ladewd · Post by **ladewd** » Thu Dec 27, 2007 5:55 pm

And all this time I thought that NG meant "no good"

Jim Williams · Post by **Jim Williams** » Fri Dec 28, 2007 9:14 am

No good is correct. Try the new National LME49710, a 5534 killer.

inverseroom · Post by **inverseroom** » Fri Dec 28, 2007 3:42 pm

Jim Williams wrote:No good is correct. Try the new National LME49710, a 5534 killer.

Can I drop this in as a replacement for a 5532, Jim? I'm curious if I can get the noise down further on my Hill Multimix, just for kicks. I already put the Burr Browns in the EQ, which sound more musical to me (though I've read you criticizing the high end somewhere, I like these better for rock music)...what advantages might I find with the 49710 in the pres? I should add I think the 5532 sounds just fine.

Schem is here if you are interested in having a look.

Jim Williams · Post by **Jim Williams** » Sat Dec 29, 2007 7:55 am

First, the 5534 is a single device, the 5532 is a dual device. These should not ever be confused unless you want to let the smoke out. The LME49710 is a single device, a replacement for the 5534. The 5532 replacement is the LM4562. It's a pretty safe drop in, but I would still examine the output pins on a scope for stray oscillations as these are 55 mhz devices compared to 10 mhz for the 5534/2. Local power supply .1 uf bypass caps on the power rails is usually needed and of course, a small cap across each feedback resistor for phase stability.

Another choice for the duals is the AD8599 mounted on a Brown Dog or Aries adaptor. This is a 15 mhz part with closer bandwidth specs to the 5532/4 but has very low 1 nv/hz/sq noise spec.

Another choice for the singles is the BurrBrown OPA211 which is another 1 nv noise spec part, S08 only so it also needs the adaptor.

brianroth · Post by **brianroth** » Sun Dec 30, 2007 12:38 am

Hiya, Jim! One "gotcha" with the LME49710 is the max rail voltage ratings at +/- 17 VDC.

More than a few desks, etc. using 5534's ran the chips upwards to the max of +/- 22v ratings of the 5534 spec. That somewhat spooks me if swapping-in the newer Nationals.

Shrug...Trident also ran TL0's closer to +/- 20V, while the chips were rated at +/- 18V.

Bri

inverseroom · Post by **inverseroom** » Sun Dec 30, 2007 6:05 am

Thanks, you guys--I think I'll let it slide for now...the 5532's are fine for my uses...but I will file this info away for future reference...

Jim Williams · Post by **Jim Williams** » Sun Dec 30, 2007 7:53 am

Most British style consoles run at 17 volts, some at 18 but once the rails get through the fusing resistors it drops about 1/2 volt. If you run at 22 volts use the LME49870 single opamp. For a dual use the LME49860 which also is rated at 22 volts power rails. No need for those NG 553x opamps anymore. The Nationals don't output as much current but do drive 600 ohm loads. For output drivers the LM6171 single or the LM6172 dual are great choices, they output 100 ma and will drive 50 ohm loads.

The 5534/2 was released in 1976. It's about time we moved on.

inverseroom · Post by **inverseroom** » Sun Dec 30, 2007 8:17 am

Actually, I changed my mind...I ordered a few from Digikey. Let's see if they make a difference...

inverseroom · Post by **inverseroom** » Sun Dec 30, 2007 12:38 pm

One other question about these chips. I pulled the repro amps on my Studer B67 to get ready to recap them, and discovered that each contains two NE5534P's, and one NE5534AN. The record cards have 3 NE5534P's (along with one SN7402N).

Do the National chips serve as drop-in replacements for these, or would further modifications be necessary? They're all socketed.

redear · Post by **redear** » Mon Dec 31, 2007 11:07 am

inverseroom wrote:Actually, I changed my mind...I ordered a few from Digikey. Let's see if they make a difference...

Let me know how this works. I was not blown away by the BB swap in my hill.

inverseroom · Post by **inverseroom** » Mon Dec 31, 2007 11:30 am

redear wrote:
inverseroom wrote:Actually, I changed my mind...I ordered a few from Digikey. Let's see if they make a difference...
Let me know how this works. I was not blown away by the BB swap in my hill.

I posted about this in detail a month or two ago...I thought the BB sounded great in the EQ, but didn't make much of a difference in the pres...

I will let you know!

Andy Peters · Post by **Andy Peters** » Mon Dec 31, 2007 12:27 pm

inverseroom wrote:One other question about these chips. I pulled the repro amps on my Studer B67 to get ready to recap them, and discovered that each contains two NE5534P's, and one NE5534AN. The record cards have 3 NE5534P's (along with one SN7402N).

The letters P and N are both used as a part number suffix to indicate the plastic DIP package. Some manufacturers use P, others use N. The "AN" usually indicates a "better" version of the device.

In the case of your repro amps, it sounds like at some point somebody replaced a 5534P with a 5534AN. I doubt you can even buy a non-A version of these things any more.

The SN7402N is a quad NOR gate, a digital chip, obviously also in plastic DIP.

-a

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NE5534N versus NE5534NG?

NE5534N versus NE5534NG?

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