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Delta Sigma ADC as an averager. | Cypress Semiconductor

Delta Sigma ADC as an averager.

Summary: 0 Replies, Latest post by rahulram on 04 Dec 2012 03:28 AM PST
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rahulram's picture
Cypress Employee
115 posts

  More than an ADC, delta sigma modulator shall very effectively be used as a filter, when the sampling rate is appropriately choosen.

When we have an extremely low sampling rate, as low as about 2000SPS, the Sync 4 filter inside the delta sigma adc will strip down the frequency components above 1000 Hz, infact, the sync4  filter has good response to frequencies below 200Hz..

So, if you send a stream of pulses to the ADC, we would get the average value of it. 

Caution : Choose the range of the ADC Cleverly, as that might result in a poor resolution(here, average value), if not properly choosen.


Rahul ram

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