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Author Topic: dual slope integrating ADC  (Read 3510 times)

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Offline electros6Topic starter

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dual slope integrating ADC
« on: December 09, 2013, 12:54:15 pm »
hi guys ,
           Somebody tell me what is meant by gain of the integrator in integrating ADC. how to calculate the raising time period required and the  resolution of integrating ADC.
 
     
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Offline free_electron

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Re: dual slope integrating ADC
« Reply #1 on: December 09, 2013, 02:33:37 pm »
The gain of the integrator is how many volts a second it can rise

I dont know what you mean with raising time

The resolution is determined by how accurately you can fragment time.
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Offline electros6Topic starter

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Re: dual slope integrating ADC
« Reply #2 on: December 10, 2013, 02:09:45 am »
sorry ,  Raising time means ramp up time .

      how to determine the ramp up time (ie) the time required to charge the integrator capacitor by the input voltage since its is a varying parameter , if the ramp up time is determined by the maximum input voltage , at low voltage the capacitor gets charged quicker then the fixed ramp up time. Since the output is given by      Vin * T2/T1 , the ramp time affect the output. please explain
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Offline free_electron

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Re: dual slope integrating ADC
« Reply #3 on: December 10, 2013, 02:43:26 am »
homework ? do your own ...

One time is a constant derived from a reference. the other is derived from input.
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Offline electros6Topic starter

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Re: dual slope integrating ADC
« Reply #4 on: December 10, 2013, 02:47:13 am »
please send me any links about integrating adc or books
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Offline free_electron

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Re: dual slope integrating ADC
« Reply #5 on: December 10, 2013, 03:05:39 am »
internet must be broken....

http://en.wikipedia.org/wiki/Integrating_ADC

google for dual slope adc
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Offline codeboy2k

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Re: dual slope integrating ADC
« Reply #6 on: December 11, 2013, 06:02:12 am »
Quote from: free_electron on December 10, 2013, 03:05:39 am
internet must be broken....

I hate it when that happens :(
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