Showing posts with label CD4011. Show all posts
Showing posts with label CD4011. Show all posts

Sunday, February 19, 2017

ADC test

incomplete Σ Δ ADC -- since i don't quite grasp it's operation yet -- just to see where it goes . . .


the CLK not verified as opt. for this v. but for it's predecessor that was tracking the analog input with the analog summer - the D-Flop output was basically the same only it was without the U/D counter ...

the following shows the effect of resetting the U/D count to 0 after specific time interval (number of clocks)
--  the effect with pure*sine wave here is the "reset" (actually a periodic substraction of some constant) integrates the derivative of it* back to it* -- it's a lot of tedious testing to determine what to actually implement in circuit . . . but the following is showing the prev. test being on the right track





what is surprising here is that the lesser number of clocks gives better results ???

[Eop]

Wednesday, May 11, 2016

CD4003 (К176ТМ1)

e.g. what to do with old stuff ...


Simplified CMOS setup - to gain reasonable simulation speeds ...

one half of the chip (the 4011 and -69 have the same I/O/supply scheme) :



extendable counter setup :



[Eop]