Successive Approximation ADC MCQ’s

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This set of Microcontroller Multiple Choice Questions & Answers (MCQs) focuses on “Successive Approximation ADC”.

1. In SAR based conversions, each bit typically requires one clock cycle (sometimes two) to make a comparison and set up the new voltage.
a) true
b) false
c) cant be said
d) depends on the conditions

2. The main operations that are basically performed in a SAR ADC are?
a) logic to control the operation
b) some way of generating the voltages, for comparison
c) logic to control the operation and finding some way of generating the voltages for comparison
d) none of the mentioned

3. The successive approximation converters have a resolution of _________
a) 8-10 bits
b) 10-12 bits
c) 12-16 bits
d) 16-32 bits

4. Usually, a capacitor is inserted between an analog input and the ground because
a) it blocks the analog voltage
b) it suppresses the noise
c) it increases the gain
d) none of the mentioned

5. ADC10 needs external capacitors on its voltage reference.
a) true
b) false
c) cant be said
d) depends on the conditions

6. While conversion is in progress, which of the flag is affected.
a) ADC10ON
b) ADC10MEM
c) ADC10BUSY
d) ADC10DF

7. ADC10 and ADC12 are _________
a) The converters
b) SAR modules available in the MSP430
c) Sigma delta modules available in the MSP430
d) Comparator modules available in the MSP430
View Answer

8. ADC10CTL0 and ADC10CTL1 are registers
a) for controlling SAR module
b) for controlling the sigma delta module
c) for controlling the comparator module
d) all of the mentioned

9. ADC10SHTx bits allow_________cycles of the ADC10CLK.
a) 4
b) 8
c) 16
d) all of the mentioned

10. The input to the ADC10 is selected from_______bits of the ADC10CTL1 register?
a) INCHx
b) ADC10SC
c) ADC10ON
d) ENC

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