Anybody used a FPAA (field programmable analog array)?

kuroguy · 27th May 2009, 05:39 PM

I just had lunch with a guy that used to work for Lattice. He told me about the FPAA. It is the analog counterpart to a FPGA. He said these devices make audio manipulation very easy; even said these are the future of commercial audio (not so sure about that).

I'll bite. I told him I was interested in building an active crossover for my stereo. He said there was a simple module built in that would do that and suggested I start experimenting wioth them. I think I will.

Anyhow, anyone experimented with these or even heard about them?

KSTR · 27th May 2009, 06:35 PM

Er, the guy you talked to wouldn't give more information, like part numbers or at least the exact device family?

I briefly evaluated the ispPAC10/20/30 from Lattice in 2002 or so, in a non-audio application. They didn't make it into the product, too much supply current and too expensive, too.

ispPAC is the only analog series from Lattice I'm aware of and now it seems to be obsolete stuff anyway (I just checked the website). Plus, from looking at the spec sheets, I don't see that an audio x-over would be easily doable with them, no pole frequencies below 10kHz

- Klaus

kuroguy · 27th May 2009, 06:54 PM

I actually have a meeting with him tomorrow. I'll ask for more specifics. He was positive it could work as a crossover very easily and well.

KSTR · 27th May 2009, 07:05 PM

That'll be nice.

Maybe Lattice have something new in their portfolio...

rtarbell · 27th May 2009, 09:18 PM

Cypress has their PSoC microcontrollers, which have analog components on them (they have "analog blocks", and you can use these analog blocks to make opamps or A/D converters, as well as switched capacitor circuits as resistors for the opamps). I'm not sure that this is true FPAA, but it is programmable to the point that you can make basic filters using their products.

27th May 2009, 05:39 PM	#1
kuroguy diyAudio Member Join Date: Sep 2007	Anybody used a FPAA (field programmable analog array)? I just had lunch with a guy that used to work for Lattice. He told me about the FPAA. It is the analog counterpart to a FPGA. He said these devices make audio manipulation very easy; even said these are the future of commercial audio (not so sure about that). I'll bite. I told him I was interested in building an active crossover for my stereo. He said there was a simple module built in that would do that and suggested I start experimenting wioth them. I think I will. Anyhow, anyone experimented with these or even heard about them? __________________ "The magnet wire used to come from Radio Shack. In keeping with their policy of figuring out what the best products are and discontinuing them they no longer have it." - Max Robinson

27th May 2009, 06:54 PM	#3
kuroguy diyAudio Member Join Date: Sep 2007	I actually have a meeting with him tomorrow. I'll ask for more specifics. He was positive it could work as a crossover very easily and well. __________________ "The magnet wire used to come from Radio Shack. In keeping with their policy of figuring out what the best products are and discontinuing them they no longer have it." - Max Robinson

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27th May 2009, 06:35 PM	#2
KSTR diyAudio Member Join Date: Jul 2007 Location: Central Berlin, Germany	Er, the guy you talked to wouldn't give more information, like part numbers or at least the exact device family? I briefly evaluated the ispPAC10/20/30 from Lattice in 2002 or so, in a non-audio application. They didn't make it into the product, too much supply current and too expensive, too. ispPAC is the only analog series from Lattice I'm aware of and now it seems to be obsolete stuff anyway (I just checked the website). Plus, from looking at the spec sheets, I don't see that an audio x-over would be easily doable with them, no pole frequencies below 10kHz - Klaus

27th May 2009, 07:05 PM	#4
KSTR diyAudio Member Join Date: Jul 2007 Location: Central Berlin, Germany	That'll be nice. Maybe Lattice have something new in their portfolio...

27th May 2009, 09:18 PM	#5
rtarbell diyAudio Member Join Date: Sep 2005	Cypress has their PSoC microcontrollers, which have analog components on them (they have "analog blocks", and you can use these analog blocks to make opamps or A/D converters, as well as switched capacitor circuits as resistors for the opamps). I'm not sure that this is true FPAA, but it is programmable to the point that you can make basic filters using their products.

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