Here’s a pic of a TP3051J telephone interface chip (CODEC and Filter). Yes, a picture of the actual chip inside of the IC, after I popped the top off of it. I have a lot of them so I figured that checking one out to see what was in it would be fun. The pic isn’t very good because it was taken through a magnifying glass which is not color corrected.
I’ve searched but can’t find much about it except the National datasheet. All I know is that a lot of chip brokers will sell it if you submit a request for a quote. I won’t do that, never ever again. I got onto one email list of a BCBFH (search for BOFH) and they refused to take my email address off their mailing list. I even called them but as is usual with crooked companies, they told me the sender of the email was not in, and to leave a message, which most likely was never even written down, or else tossed in the trash can. I tried to report them to their ISP, but it didn’t help. I finally put a filter in to trash any emails from them. This is in clear violation of the U.S. CAN SPAM Act laws. If anyone knows of a circuit that uses this chip, I would appreciate an email to my yahoo.com email address, acmefixer or leave a comment.
