This set of MSP430 Microcontroller Multiple Choice Questions & Answers (MCQs) focuses on “Sigma Delta ADC”.
1. The basic idea behind the sigma delta converter is that
a) to carry out the conversion
b) to carry out communication
c) to reduce the circuit to its simplest way possible and then carry out the conversion
d) all of the mentioned
View Answer
Explanation: The main idea behind the sigma delta converter is that to reduce the circuit to its simplest way possible and then carry out the conversion.
2. Sigma delta converter is a __________
a) 1 bit converter
b) 2 bit converter
c) 3 bit converter
d) 4 bit converter
View Answer
Explanation: Sigma delta converter is a 1 bit converter.
3. Sigma delta converter is having good resolution.
a) yes
b) no
c) cant be said
d) depends on the conditions
View Answer
Explanation: Sigma delta converter is having poor resolution quality.
3. Oversampling ratio is defined as the _________
a) final frequency
b) oversampling frequency
c) oversampling frequency/final frequency
d) final frequency/oversampling frequency
View Answer
Explanation: Oversampling ratio is defined as the ration of the oversampling frequency fm to the final frequency fs.
4. Here the word sigma represents _________
a) subtraction
b) differentiation
c) integration
d) none of the mentioned
View Answer
Explanation: In a sigma delta converter, sigma word represents that the output obtained from the delta function is getting integrated.
5. SD16_A features are controlled by _________
a) memory mapped registers
b) register mapped registers
c) data mapped registers
d) none of the mentioned
View Answer
Explanation: SD16_A features are controlled by the memory mapped registers.
6. The second part of the ADC handles purely digital signals.
a) true
b) false
c) cant be said
d) depends on the conditions
View Answer
Explanation: The second part of the ADC handles purely digital signals.
7. The second part of the ADC’s output is in the form of _________
a) the fast stream of single bits
b) the fast stream of multiple bits
c) the slow stream of single bits
d) the slow stream of multiple bits
View Answer
Explanation: The second part of the ADC take in fast stream of single bit and give out a slow stream of multiple bit values.
8. The filtered digital signal is then decimated to
a) reduce the rate of samples from fm to fs
b) reduce the rate of samples from fs to fm
c) increase the rate of samples from fm to fs
d) increase the rate of samples from fs to fm
View Answer
Explanation: The filtered digital output is then decimated in order to reduce the rate of samples from fm to fs.
9. Decimated means _________
a) multipled by 10
b) multiplied by 100
c) divided by 10
d) divided by 100
View Answer
Explanation: Decimated means to divide the result by 10.
10. The SD16 has a second-order modulator with a _________
a) sinc filter
b) sinc2 filter
c) sinc3 fiter
d) rect filter
View Answer
Explanation: The SD16 has a second-order modulator with a sinc3 filter.
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