Phototronics PA630/630A datasheet

Status
Not open for further replies.
Jump to Latest
#5
mlloyd1 said:
search around a bit.
this may be helpful?
http://www.diyaudio.com/forums/showthread.php?s=&postid=642438&highlight=#post642438

mlloyd1
Click to expand...

Hi mlloyd1,

Thank you, but I allready have a patent sheet and article from EW+WW from March 1990, datasheet is missing😉


soundchaser001 said:
Funny, I was just looking at the data sheet last night. I have to scan it to PDF & I'll post it tomorrow if I remember to bring it to work to scan.

Matt
Click to expand...

Hi Matt,

Thank you for your effort, please take your time🙂
 
#6
PA630/PA630A Information

I'm the original designer of the PA630/PA630A chips. All the documentation was done back in 1990, with old obsolete software. As a result, for many years, only hard copies existed.

Recently, I bit the bullet and scanned a lot of this information, but the files are large. If there is enough interest, perhaps I could post some of this somewhere on this board.

Unfortunately, the actually PA630/PA630A ICs have been long out of production and are essentially unavailable.

However, I am working on an updated and simplified version that is called the PA631. My initial application is in a headphone amplifier that will have NO global feedback - just buffers and the current conveyor to provide the gain.

Stay tuned for more information.

Linear
 
#7
Speaking of current conveyors, I'd be curious about a BJT version of this:
 

Attachments

  • cc3.png
    cc3.png
    50.2 KB · Views: 411
#8
Re: PA630/PA630A Information

hey linear:
any updates or progress on this?

mlloyd1

Linear said:
I'm the original designer of the PA630/PA630A chips. All the documentation was done back in 1990, with old obsolete software. As a result, for many years, only hard copies existed.

Recently, I bit the bullet and scanned a lot of this information, but the files are large. If there is enough interest, perhaps I could post some of this somewhere on this board.

Unfortunately, the actually PA630/PA630A ICs have been long out of production and are essentially unavailable.

However, I am working on an updated and simplified version that is called the PA631. My initial application is in a headphone amplifier that will have NO global feedback - just buffers and the current conveyor to provide the gain.

Stay tuned for more information.

Linear
Click to expand...
 
Status
Not open for further replies.
Top Bottom