Looking for information on ICs

[Watthour]

I am seeking data on the Sony CX-067 IC. It is used in Sony and Sansui units to drive the VU meters. I would appreciate any data on the IC including pinouts and/or diagrams if they are available.

Anyone have a source or link?

 

[RVT1K]

Your best bet is probably to find a schematic of a unit the chip is installed in.

 

[mbz]

Your best bet is probably to find a schematic of a unit the chip is installed in.

Along these lines,,, hfe Sony TA-E7 has some basic info and typically voltages, hopefully you are looking at testing rather than replacing...

 

[Watthour]

Thank you for that information. I am looking for both analysis and potential replacement. Knowing the internal circuits helps determine whether the external signal and support components are appropriate, but ultimately it could be helpful to be able to retrofit a device or module to replace these.

 

[RVT1K]

I'm guessing it is a propitiatory design and you will not find a detailed datasheet like you would with other devices. I also suspect there are no like-for-like replacements.
You may be able to tease enough info out of the block-diagram to recreate something but that will take some doing.

Do you have a specific piece of equipment that you are trying to repair? Maybe find a donor for a replacement -if not new- chip.

At the job I just retired from, we had an old product line that we were continuing to support because of lucrative service contracts. I had totes full of old circuit boards and would occasionally have to go mining for parts to complete a repair.

 

[Watthour]

That IC is used in Sansui G-22000 and G-33000 units, and some higher-end Sony amps. Since the value of those units is relatively high, having them fully functional is desirable and potentially worth some special attention and/or retrofitting.

 

[mbz]

A bit left field, maybe look at implementing a discrete meter drive from another amp??? This would be a last resort, certainly would want to keep such units OEM.