[sdiy] Expo in one chip?

Michael E Caloroso mec.forumreader at gmail.com
Fri Jan 5 06:58:09 CET 2018


> Apart from the IP release aspect what's behind the sudden resurgence of chip
> fabricators?  Is it just demand or has the process got cheaper/easier?
>
> Just curious!

I welcome any reissues to put those bastard counterfeiters out of business.

MC

On 1/4/18, Dave <dlmanley at sonic.net> wrote:
> I only scanned the linked article but believe all 'new' fabs are going
> support huge wafers with tiny geonetries.
>
> One might guess any 'new' analog fabs that remake old parts are probably all
> small wafers with large device geometries probably built on equipment that
> has been sold onto the surplus market as the large semi houses have
> abandoned old low tech processes/low volume parts.  There's a niche market
> the big guys dont want to serve because it's not profitable enough and/or
> there are too many small customers, but where small fabs can make some
> money.
>
> I've also had to deal with large semi houses selling entire product lines
> and processes to smaller companies.
>
> For reference i just looked at THAT's foundry offering: 4 inch wafers and 3
> micron, and they acquired that fab in 1999 (at that time the digital guys
> were at 0.18 micron).
>
> New fabs to be cost effective are going to be ~12 inch wafers and capable of
> <10 nm,  but these processes can't handle anywhere near the +/-15 volts
> wanted for audio so the old lives on.
>
> -Dave
>
>
> On January 4, 2018 4:15:54 AM PST, Neil Johnson <neil.johnson71 at gmail.com>
> wrote:
>>Hi,
>>
>>Alex Sullivan wrote:
>>> Apart from the IP release aspect what's behind the sudden resurgence
>>of chip fabricators?  Is it just demand or has the process got
>>cheaper/easier?
>>>
>>> Just curious!
>>
>>I suspect it is a combination of two things:
>>
>>1/ The resurgence/growth in the analogue synth market.  Behringer
>>getting involved is a pretty good indicator that the market is
>>sufficiently large enough that Uli thinks he'll get a worthwhile
>>return on his investment.  CEM also came out of the closet when the
>>market reached a point where they felt they could sell enough chips to
>>make it worth having a wafer sliced and packaged up (I don't know if
>>they had new wafers made or simply are using old wafers).
>>
>>2/ The growth in low-cost Chinese fabs targetting the larger/older
>>geometries.  For example:
>>https://semiengineering.com/china-fab-boom-or-bust/
>>This is where companies like SSI and Alfa become possible.  Uli has
>>his own fabs to supply his own factories, so he can afford to spread
>>the costs across multiple product familiies (synths, mixing desks,
>>effecs units, etc).
>>
>>Neil
>>--
>>http://www.njohnson.co.uk
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>



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