adc question

164

03:03:09

How are the outputs on the ADC controlled.  The rising edge of the clock and voltage in seems to determine output but not following the pattern.

published 8 years ago

Sgd0072

8 years ago

The highest input voltage the ADC can recognize is 15V so anything above that won't register. And your clock logic train is too slow to keep up with your frequency

BillyT

8 years ago

The clock has got to be 10-16 X faster than the signal being sampled, the signal should be from 0 to some some positive value (limit 128v), a similar positive value is placed as the reference voltage in the ADC. Here is a rough circuit showing what is happening, not the best timing, but shows the basics of what is happening, http://everycircuit.com/circuit/4576847773040640

hurz

8 years ago

16V reference of adc means 8V center position and max 8V ac swing around

BillyT

8 years ago

Tests seam to indicate that the ADC is actually a 0 to + voltage device.

rich11292000

8 years ago

Yall need to take your shoes off to count past 9?

colezilla74

8 years ago

Get off your high horse Rick. You get the golden bananna for being so smart.

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