4558S inline op amp needed

[Burnedfingers]

Hi,

I have received an email from a member that is trying to locate a 9 pin inline 4558S op amp.

Is there a replacement number?

Thanks

 

[Cobra2]

Op-amp...

The 9-pin is just like a 8-pin, with an extra Vcc(+) connection.

Arne K

 

[djk]

You can 'dead-bug' an 8 pin dip. Bend four leads straight out and solder into the board. Tack short wires on the other and solder into the board.

 

[Burnedfingers]

Thank you Mr. DJK I was trying to find the guy a inline 9 pin so he could just replace the defective one he has.

 

[anatech]

Hi Joe,
Japanese parts vendors sell them too. Your friend should have no trouble getting that part. djk's suggestion is good in a pinch.

Sometimes they route power throught the chip (B+), you may have to jumper if this is the case.

-Chris

 

[Cobra2]

the easy way

Quad -> in-line

Arne K

 

[Burnedfingers]

Hi Chris,

I realize that djk's suggestion is good in a pinch. I was just trying to find a plug and play part for the guy that was looking for an exact replacement. I cannot seem to find a NTE replacement or anything else listed. Yes, you could use either a quad or a dual with some jumpers and provisions made for the extra sections.

 

[anatech]

Hi Joe,

I cannot seem to find a NTE replacement or anything else listed.

I'll pretend I didn't see that.

Try http://pacificsemi.com/search.php (found it by searching NJM4558S) or some more local suppliers. Very common with Japanese service networks, just contact a warranty shop for one of them.

-Chris

Edit: another one but out of stock http://www.mcminone.com/search.asp?keyword=njm4558s&btnSubmit.x=0&btnSubmit.y=0&btnSubmit=GO

 

[poobah]

Cobra2,

Clever, very clever!

You should tie pins 1&2 - 7&8, then 3&5 to V+. Unused amps make for trouble.

 

[anatech]

Hi poobah,
You mean pins 1 to 2, 6 to 7 then 3 and 5 to ground.

I don't like tying inputs to supplies.

-Chris

 

[poobah]

Jeeze... tough crowd here today...

You're right though... How did I mess up those numbers so bad???

 

[Burnedfingers]

Old and blind me bad

 

[anatech]

Hey Robert!,
You were very close. You would have got it right if you were sticking the chip in yourself. Well, you would have figured out sooner or later.

Besides, what you wrote sounded really good.

-Chris

 

[poobah]

tough crowd

Kiss my op-amp Joe, I am blind, but not as old as SY.

And where you tie off the positive inputs might depend on the chip. There are some op-amps that actually power-down sections depending on V common mode at the inputs. There are even amps where the output will toggle (reverse) if you mess the inputs 'round enough.

 

[djk]

http://www.mcminone.com/search.asp?...AMP&searchin=off&btnSubmit.x=10&btnSubmit.y=8


Sort By:SKUManufacturerManufacturer PartAvailabilityPrice-High to LowPrice-Low to High Found: 4

SKU Description Availability Price Select

UPC4570HA NEC IC 9-PIN SIP DUAL OP AMP BIPOLAR
NEC IC 9-PIN SIP DUAL OP AMP BIPOLAR I.C(MONO-ANA)
Mfr. Name: MCM An InOne Company

In Stock
(72 available) 1+ $0.98
10+ $0.89
25+ $0.77


NJM4556S JRC IC 9-PIN SIP OP-AMP DUAL BIPOLAR *SS
JRC IC 9-PIN SIP OP-AMP DUAL BIPOLAR *SS IC, Number of Pins: 8, Package: SIP
Mfr. Name: MCM An InOne Company

In Stock
(4 available) 1+ $2.86
10+ $2.80
25+ $2.62


NJM4559S DISCD JRC IC 9-PIN SIP DUAL OP AMP BIPOLAR *SS
DISCD JRC IC 9-PIN SIP DUAL OP AMP BIPOLAR *SS IC, Number of Pins: 9, Package: SIP
Mfr. Name: MCM An InOne Company

Out of Stock
(Lead time 0 days) 1+ $1.45
10+ $1.38
25+ $1.29


TA75559S SUB ONLY TOSHIBA IC 9-PIN SIP DUAL OP AMP BIPOLAR
SUB ONLY TOSHIBA IC 9-PIN SIP DUAL OP AMP BIPOLAR IC, Function: Operational Amplifier, P
Mfr. Name: MCM An InOne Company

Out of Stock
(Lead time 28 days) 1+ $3.05
5+ $2.70
10+ $2.40



Sort By:SKUManufacturerManufacturer PartAvailabilityPrice-High to LowPrice-Low to High Found: 4







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[poobah]

good work djk,

Now what we do for fun and games?

 

[anatech]

Hi poobah,
You could find some NJM4559 or NJM4560 types for Joe.

Joe,
Yank apart most pieces of Japanese audio gear and you will find some NJM4558's. Some may even be the "S" version (sip). Those small Fostex or Tascam mixer - cassette things were full of them.

-Chris

 

[poobah]

here

There are tons of these in the brokerages... didn't see any in regular distribution.

 

[anatech]

Hi poobah,
Look in za old broken unit. In dar, you find da gold.

To heck with brokers. They want you to buy a ton, not onesy twosy.

The guys who normally carry Japanese semi's will have them, as will every shop in the warranty network. It's one of the most common parts out there.

-Chris

 

[Burnedfingers]

Kiss my op-amp Joe,

What did I do for this?

Old and blind me bad

I am old and blind not you oh great Poobah

You could find some NJM4559 or NJM4560 types for Joe.

You guys are a laugh a minute. Ok, I was having a blond moment and forgot the damn prefex on the part number.