Chip

[carlmart]

I am looking for the SFC2458 datasheet.

It's a low noise dual chip, but I don't know who makes it.

Does anyone know it?


Carlos

 

[raindog]

the equivalent is mc1458; do a google for this one and you will find datasheets

 

[JOE DIRT®]

mc1458 is a quad 741 op amp

 

[raindog]

nope joe, it's a dual opamp (do a google search and you'll see)

 

[JOE DIRT®]

I haven`t used any...always thought the 1458 was the quad....thanks for the incite.

DIRT®

had to repost...never have USED THEM

 

[peranders]

Do anyone know the brand of this opamp? SFCxxxx Never heard of it before.

 

[vbd]

Hi,all
this chip is a VERY old Thomson or even older Sescosem version of the motorola 1458 dual 741... Back in the eighties....or seventies
Nothing exciting, I guess
BTW, they were manufactured here, in Grenoble, France...

 

[carlmart]

Do anyone know the brand of this opamp? SFCxxxx Never heard of it before.

Sorry for not mentioning the application where this chip is used.

It's on an UREI mic preamp, battery powered, that came with an HP curve tracer.

It's old indeed, from '80 or '82.

Being an improved 1458 might be a logical suggestion. As I never used it I keep forgetting about it.


Carlos