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Among the following, the slowest ADC Analog to-digital converter is

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Among the following, the slowest ADC Analog to-digital converter is
  • Aparallel-comparator (i.e. flash) type
  • Bsuccessive approximation type
  • Cintegrating type
  • Dcounting type
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The conversion speed of all N-bit ADCs are:

- Counter Type ADC : ( 2N - 1 ) .Tclk

- SAR type ADC: n*Tclk

- Flash Type ADC: 1.T clk

- Dual slope ADC: ( 2n + N ) T clk$