Chips released a very long time ago etc9668rx and tda7273.

[Vitalij Veznavec]

Извините, я нигде не могу найти документацию, структурную схему, эти микросхемы. Буду признателен , если дадите ссылку или распиновку микросхемы .Микросхемы очень давно выпущенные etc9668rx и tda7273 .

 

[Mooly]

Извините, я нигде не могу найти документацию, структурную схему, эти микросхемы. Буду признателен , если дадите ссылку или распиновку микросхемы .Микросхемы очень давно выпущенные etc9668rx и tda7273 .

English please 🙂

Sorry, I can't find the documentation, the block diagram, these chips anywhere. I would be grateful if you give a link or pinout of the chip .Chips released a very long time ago etc9668rx and tda7273 .

 

[Mooly]

TDA7273 data sheet attached. I have no idea on the other 🙁

 

[Vitalij Veznavec]

Sorry, I can't find documentation, block diagram, these chips anywhere. I would be grateful if you give a link or pinout of the chip. The chips were released a long time ago etc9668rx and tda7273.

 

[Vitalij Veznavec]

thank you very much for your answer

 

[Mooly]

What is the ETC9668 used in?

 

[Vitalij Veznavec]

THERE IS SUCH A MUSIC CENTER OSAKA AN-2010A.
There is a preamplifier on the TDA7273 microcircuit, and the volume control on two buttons is the ETC9668RX microcircuit.
This board contains these two chips. Thanks for helping me!

 

[Mooly]

I can't find anything at all related to that number. OSAKA isn't a brand seen here.

There is an ST forum:
https://community.st.com/

Also this (I have no idea if it is a reputable site... you have to register... use at your own risk)
https://www.scribd.com/document/358411038/Etc9668-Datasheet-PDF

 

[newvirus2008]

TDA7273 was mainly used with the motor speed control chip TDA7274 in Personal Cassette Players in the mid-90s, for example DS720 from Philips.