Audio equalizer/gyrator replacement chip

J

Jon B

Guest
I need to replace a M5229P graphic equalizer chip. Basically it's
just 8 opamps with internal resistors configured so that 2 pins of
each amp connect to the outside world to make inductance gyrators for
a filter bank. Here is a diagram:

http://mysite.verizon.net/negatron/M5229P.gif

The chip is out of production and there are no obvious direct
replacements. There is a similar chip, the BA3812L, which has
transistor arrangements to do the same thing. You can see it here:

http://www.ben.cz/download/120490/ba3812l.pdf

I know I could replace this with 4 quad op-amps and 30 resistors and
get the same functionality, but if anyone knows of another chip that
is even remotely similar in function, please let me know.

Jon
 
Jon B wrote:

I need to replace a M5229P graphic equalizer chip. Basically it's
just 8 opamps with internal resistors configured so that 2 pins of
each amp connect to the outside world to make inductance gyrators for
a filter bank. Here is a diagram:

http://mysite.verizon.net/negatron/M5229P.gif

The chip is out of production and there are no obvious direct
replacements. There is a similar chip, the BA3812L, which has
transistor arrangements to do the same thing. You can see it here:

http://www.ben.cz/download/120490/ba3812l.pdf

I know I could replace this with 4 quad op-amps and 30 resistors and
get the same functionality, but if anyone knows of another chip that
is even remotely similar in function, please let me know.

Jon
Would the LMC835 be close for you?

http://www.national.com/pf/LM/LMC835.html

http://www.national.com/an/AN/AN-435.pdf

I have a bunch of them...
 
"Jon B" <u035m4i02@sneakemail.com> wrote in message
news:298d9774.0404210510.78b61698@posting.google.com...
I need to replace a M5229P graphic equalizer chip. Basically it's
just 8 opamps with internal resistors configured so that 2 pins of
each amp connect to the outside world to make inductance gyrators for
a filter bank. Here is a diagram:

http://mysite.verizon.net/negatron/M5229P.gif

The chip is out of production and there are no obvious direct
replacements. There is a similar chip, the BA3812L, which has
transistor arrangements to do the same thing. You can see it here:

http://www.ben.cz/download/120490/ba3812l.pdf

I know I could replace this with 4 quad op-amps and 30 resistors and
get the same functionality, but if anyone knows of another chip that
is even remotely similar in function, please let me know.

Jon
Maybe the M5227P ?

regards
Alastair
 
"Alastair McGloan" <jukeboxwizard@yahoo.com> wrote in message news:<K5Djc.102$rS.87@newsfe1-win>...
Maybe the M5227P ?
Well, something besides others in the same series...
 

Welcome to EDABoard.com

Sponsor

Back
Top