MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Counter Type ADC and Flash Type ADC

In a flash ty...

Question

In a flash type ADC, an analog input is to be converted into $4 -$ bit digital output, then number of op-amp comparators required in ADC will be _____
15

Open in App

Solution

The correct option is A 15
Op-amp comparators required in ADC for n-bit digital output
$= 2^{n} - 1$
$= 2^{4} - 1 = 15$

Suggest Corrections

thumbs-up

0

Similar questions

Q. An analog signal has to be converted into 3-bit digital output using flash ADC, then number of op-amp comparators required in analog to digital converter will be _____.

Q. An analog signal has to be converted into 3-bit digital output using flash ADC, then number of opamp comparators required in analog to digital converter will be _____

Q. The resolution of a 4-bit counting ADC is 0.5 Volts. For an analog input of 6.6 Volts, the digital output of the ADC will be

Q. The number of comparators required for a 4-bit flash type ADC is ____.

Q. In an N bit flash ADC, the analog voltage is fed simultaneously to

2^{N} - 1

comparators. The output of the comparators is then encoded to a binary format using digital circuits. Assume that the analog voltage source

V_{i n}

(whose output is being converted to digital format) has a source resistance of 75

Ω

as shown in the circuit diagram below and the input capacitance of each comparator is 8 pF. The input must settle to an accuracy of 1/2 LSB even for a full scale input change for proper conversion. Assume that the time taken by the thermometer to binary encoder is negligible.

If the flash ADC has 8 bit resolution, which one of the following alternatives is closest to the maximum sampling rate ?

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Counter Type ADC and Flash Type ADC

OTHER

Watch in App

explore_more_icon

Explore more

Counter Type ADC and Flash Type ADC

Join BYJU'S Learning Program

CrossIcon