CameraIcon

SearchIcon

MyQuestionIcon

119

You visited us 119 times! Enjoying our articles? Unlock Full Access!

Cofactor

The number of...

Question

The number of comparators in a 4-bit flash ADC is

A

4

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

5

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

15

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

D

16

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C 15
No. of comparators in a flash ADC $= 2^{n} - 1$ .
$∵ n =$ no. of bits.
$∴$ No. of comparators $= 2^{4} - 1 = 15$

Suggest Corrections

thumbs-up

1

Similar questions

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

Q. 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 _____

Q. The number of comparators required in a 3-bit comparator type ADC is

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. 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

Evaluation of Determinants

MATHEMATICS

Watch in App

explore_more_icon

Explore more

Standard XII Mathematics

Join BYJU'S Learning Program

CrossIcon