If you had access to a silicon wafer foundry

Bigun · 30th March 2009, 03:59 PM

Instead of being restricted to using the devices that are made and sold by people like Toshiba, what would you design if you could DIY silicon ? I don't mean some kind of super-transistor with specifications that nobody can achieve - Toshiba already make some of the best there are. But perhaps there is a device with 4 terminals or with some other interesting combination of features that makes it suitable for a specialized audio amplifier. What would it be ?

roender · 30th March 2009, 04:08 PM

BJT drivers and output devices with diodes insight, very tight matched at some current in terms of thermal coefficients, and very well thermally coupled (diode coupled with power chip)
This will allow us to make an almost perfect class B output stage, the main problem in any power amplifier.

Mr Evil · 30th March 2009, 04:22 PM

Quote:

Originally posted by roender
BJT drivers and output devices with diodes insight...

I would go even further than that - a complete output stage with error-correction in a single 4-pin package.

Also, some small-signal MOSFETs optimized for audio, maybe lateral MOSFETs at that.

roender · 30th March 2009, 04:25 PM

Quote:

Originally posted by Mr Evil

I would go even further than that - a complete output stage with error-correction in a single 4-pin package.

Neah ... It will be no fun then to build an amplifier with an OPS on a chip

scott wurcer · 30th March 2009, 04:57 PM

Quote:

Originally posted by Bigun
But perhaps there is a device with 4 terminals or with some other interesting combination of features that makes it suitable What would it be ?

Anne Francis?

traderbam · 30th March 2009, 05:11 PM

Yours is the one on the left.

30th March 2009, 03:59 PM	#1
Bigun diyAudio Member Join Date: Jan 2009 Location: K-W Ontario Blog Entries: 2	If you had access to a silicon wafer foundry Instead of being restricted to using the devices that are made and sold by people like Toshiba, what would you design if you could DIY silicon ? I don't mean some kind of super-transistor with specifications that nobody can achieve - Toshiba already make some of the best there are. But perhaps there is a device with 4 terminals or with some other interesting combination of features that makes it suitable for a specialized audio amplifier. What would it be ? __________________ "The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed." Robert M Pirsig.

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30th March 2009, 04:08 PM	#2
roender diyAudio Member Join Date: Sep 2006	BJT drivers and output devices with diodes insight, very tight matched at some current in terms of thermal coefficients, and very well thermally coupled (diode coupled with power chip) This will allow us to make an almost perfect class B output stage, the main problem in any power amplifier.

30th March 2009, 05:11 PM	#6
traderbam diyAudio Member Join Date: Jan 2002 Location: Earth	Yours is the one on the left.

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