a shift register fast enough for AD1865?

[avian]

Hi,
Im bout to build a CS8414 + AD1865 based project, but want to tackle the interchannel delay problem with an 18bit static shift register.. The problem is I cant find anything fast enough (either clock rate or latency wise). Can anyone here suggest any quick ICs to do the job?

Cheers

 

[AD1865]

It's useless to do that

I have build CS8414 + AD1865, it useless to synchronize the L/R channel. Because you can't hear the interchannel delay. How to bulid analog filter is more important.

 

[rfbrw]

At a 44K1 sample rate SCLK runs at 64Fs which is 2.8224 MHz. The notion that you cannot find something fast enough is ridiculous.
http://www.philipslogic.com/products/shiftregisters/
http://parametric.fairchildsemi.com/viewlist.asp?FAM=Logic&ITEMLIST=&FromStepSearch=yes
http://focus.ti.com/docs/logic/cata...milyId=258&techFamId=0&tfsection=product_list
http://www.onsemi.com/site/products...derByType=ascending&OrderByColumnID=0&action=

 

[tschrama]

Hi all,

I would be interested in the schematic of such a DAC. Anyone got one for me?

Best regards,
Thijs

 

[avian]

Re: Re: a shift register fast enough for AD1865?

At a 44K1 sample rate SCLK runs at 64Fs which is 2.8224 MHz. The notion that you cannot find something fast enough is ridiculous.
http://www.philipslogic.com/products/shiftregisters/
http://parametric.fairchildsemi.com/viewlist.asp?FAM=Logic&ITEMLIST=&FromStepSearch=yes
http://focus.ti.com/docs/logic/cata...milyId=258&techFamId=0&tfsection=product_list
http://www.onsemi.com/site/products...derByType=ascending&OrderByColumnID=0&action=

Thanks for the reply, the links are very helpful. It was more the propagation delay (after 18 stages) than the clock rate that was a problem. I dont want to delay the clock pulses half the time to compensate for the propagation. I guess the notion of finding an 18 stage static shift register with a total propagation delay comfortably under 30ns might be "radiculous", but my search skills suck 🙁

 

[avian]

The links provided have been extremely helpful. Looks like a 74hc676 16bit shift register together with a 74hc194 4bit shift register will do the trick and be more than quick enough.

cheers!