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Multiple Choice Quiz
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1
The circuit used to perform D/A conversion is the
A)digitizer
B)decoder
C)encoder
D)multiplexer
2
A signal that is mistakenly sampled when the sampling frequency is less than twice the input frequency is a(n)
A)harmonic
B)pseudo signal
C)alias
D)false wave
3
The smallest increment of voltage that the D/A converter produces over its output range is called the
A)step
B)resolution
C)pixel
D)bit
4
If the output increases in one increment of resolution voltage for each increment of binary number input, the DAC is
A)faulty
B)isometric
C)monochromatic
D)monotonic
5
A circuit that converts an instantaneous value of analog voltage into a binary number is the
A)multiplexer
B)half-adder
C)D/A converter
D)A/D converter
6
Which of the following is not a common method to translate an analog voltage to a binary number?
A)successive-approximation
B)weighted current source
C)flash
D)pipelined
7
To save space in IC chip design, resistor networks can be redesigned as
A)capacitor networks
B)inductor networks
C)diode networks
D)transistor networks
8
Which type of analog-to-digital converter uses a large resistive voltage divider and multiple analog comparators?
A)successive-approximation
B)weighted current source
C)flash
D)pipelined
9

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What is the function of the differential amplifier in the circuit shown above?
A)amplifies sampled analog input signal
B)attenuates least significant bits
C)subtracts the DAC output from the original analog input signal
D)adds the DAC output to the original analog input signal
10
Which of the following is not a key ADC specification?
A)resolution
B)dynamic range
C)monotonicity
D)signal-to-noise ratio





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