M5214l

[glen65]

Hi

I have a receiver that I want to upgrade the phono
and preamp sections. Currently they are using the
Mitsubishi M5214 Opamp chip in both areas. This is
a single amp 7pin SIP package. I have been all over the net trying
to find a datasheet for this chip but have come up empty handed.
I also did a search on this forum but nothing came up.
I have decided to go with the opa134 for the phono amp
and the opa604 for the tone preamp. I will make an adapter
so I can run the DIP package chips.

So I need to know if anyone here has the datasheet on the
chip. I also need to know what kind of circuit changes would
be involved to pull this off such as input, output, power supply
ect.. I will post the schematics, sorry for the poor quality.

thanks

 

[glen65]

Not sure why the attachment didnt show up in the last post.
I will try again.

 

[glen65]

Finally here is the Schematic to the Phono section