Switched-Capacitor Delaying Unit

[darwinxie]

Hi all. Is there any one knows how to realize a delaying unit (z ^ -1) functional block using switched-capacitor circuit?
Please let me know, if you know any references for it.

Thanks in advance.
:-D

 

[audiomik]

you might find the functional information in the SAD1024 datasheet useful in your quest:
SAD1024 datasheet and application note, data sheet, circuit, pdf, cross reference, pinout | Datasheet Archive

CMOS analog switches can be used for charge transfer type delays using a 2 phase clock, using the same principles as in the datasheet above.

hope this assists
Mik

 

[LvW]

Here is one possible solution:

 

[darwinxie]

Thanks LvW for the solution. I figured out that circuit realizes half clock delay (z ^ -1/2). But after I tried to cascade it, the combined circuits work as a delaying unit of 1 clock (z ^ -1). Exactly what I was looking for.

Thanks again for your help..
:-D