Question

sketch a 12 Volts, 4 bits analog to digital converter

Answer #1

In the question didn't mentioned the type....

That's why I've drawn fastest analog to digital converter (i.e flash type)

N bit a to d converter requires

2^n-1 comparators

2^n resistors

2^n ×n priority encoder

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An 10-bit successive approximation A/D (Analog-to-digital)
converter has the following specs: Minimum analog to digital
conversion time 3×10^-3 second with the analog input voltage range:
0 to +6 volts. The A/D is used with a laser micrometer sensor that
provides analog position feedback in the range of 0-0.02 m mapping
linearly to the voltage of 0-1 volt with precision (accuracy) of 60
μm.
a) What is the maximum frequency that can be sampled without
aliasing (Hz)?
b) What is the...

The experimental analog signal f(t)=5.5sin(2000πt) Volts
required to be converted into a digital representation. You are
required to use an 8-bit analog to the digital conversion process.
The conversion process uses an input range of 6 Volts to convert
from analog to equivalent digital values. The analog to digital
conversion uses a sampling frequency of 3 kHz...
7(Assuming the input signal was f(t)=5.5sin(3500πt). Would you
expect aliasing to occur in the process?
8) Suggest an anti-aliasing filter cut off frequency...

You are designing a digital thermostat which needs to measure
the temperature in a room. The thermostat uses an analog
thermometer, which outputs a voltage between 0 and 2 volts which
corresponds to a temperature range of -80F to 220F. Your
analog-to-digital converter on your digital system has an input
voltage of 0-5V. How many bits of resolution must your
analog-to-digital converter be to measure a temperature with a
resolution of 1 degree F?

Question 2:
The Arduino UNO micro-controller measures 4.25V on its 10-bit 0
− 5V analog-to-digital converter (ADC)
(a) What is the output of the ADC in decimal and binary?
(b) If this digital number is converted to analog using an 8-bit
0 − 5V digital-to-analog converter (DAC). What will be the output
of the DAC? What will be the error associated with it?

We have a 16 bit analog to digital converter that is expected to
measure a 10 volt peak to peak ac signal with harmonic frequencies
up to 100 khz. Calculate the minimum clock rate required in these
two cases: (a) the counter scans voltages sequentially, (b) the
counter bisects the voltage interval at each clock pulse.

Q1
a) The output of the DSP is digital in nature and the D/A
converter changes this to a____ (analog or multiplexed) signal?
(2)
b) Sampling should be performed by which part of the System?
(A/D converter or DSP) (2)
c) Compute the N point of a sequence x [n] =[2 3 4 --] dash is
the last digit of your roll number. roll number is 170898

An 8-bit analog-to-digital converter (ADC) has a voltage range
of 0 to 14 V and a digitization uncertainty of ±1 LSB. What is the
maximum uncertainty if the digitization is for a 14 V signal? What
is the maximum uncertainty for a 16-bit ADC, and for 25-bit? If
this ADC has a conversion time of 34 μs, then what is the highest
frequency that can be accurately digitized while satisfying the
Nyquist criterion?

Describe resolution in terms with Analog to Digital and Digital
to Analog conversion and why these advantages when it is high and
the resolution is small for this particular setting?

Explain the difference between an analog and a digital signal.
Give 2 examples of real-world digital signals.

what is the difference between digital compass and analog
compass and electrical compass?

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