signal cond ckts

7/28/2019 Signal Cond Ckts

1/5

DEPARTMENT OF INSTRUMENTATION TECHNOLOGY

R.V. COLLEGE OF ENGINEERING, BANGALORE 59.

YEAR / SEMESTER PLANNER FOR ACADEMIC YEAR

SIGNAL CONDITIONING CIRCUITS

RV COLLEGE OF ENGINEERING100 hundred questions of Signal Conditioning Circuits

Staff Incharge: G.Sharada

1) Draw a non inverting operational amplifier configuration and derive the relation

for output voltage.2) Define the following terms: i) input offset voltage ii) input bias current iii) CMRR

iv) input offset current v) input voltage range vi) slew rate.

3) Using OP amps construct and explain the working of an instrumentation amplifier

with relations.

4) Draw the bridge amplifier circuit that can output a voltage which is directlyproportional to the change in transducer resistance. write the relations for output

current and output voltage5) Write down the steps for design of a low pass filter

6) What is aliasing? Explain how aliasing occurs during sampling of data

7) Write the design procedure for F/V converter.8) Define the following terms in a PLL i) phase detector ii) capture range

9) What is voltage controlled oscillators? How are they used in FM applications

10) Draw, explain and output the waveforms of non inverting sample and hold circuit.

11) Explain how MOSFET can be used for switching applications.12) Illustrate and explain the working as a low level multiplexer configuration.

13) Explain the working of a R-2R ladder DAC with neat sketches14) Explain the features of DAC -08 with a schematic diagram15) Explain the following terms with reference to DAC and ADCs: i) aperture time

ii) conversion time iii) droop rate iv) relative accuracy v) settling

16) Briefly explain the working of a successive approximation ADC with a blockdiagram.

17) Explain the principle behind voltage to time conversion

18) Explain how date is written/read in microprocessor compatible ADCsan 8 bitADC is capable of acceptation an input unipolar (positive values only) voltage 0

to 10 volts. I) what is the minimum value of input voltage to cause a digital output

change of 1 LSB ii) what input voltage will cause all 1s at the ADCs output? iii)

What is the digital output code if the applied input voltage is 5.2 V?19) Explain the salient features of IC 7109 ADC with a schematic diagram?

20) For a circuit in fig below if R= 5 K, V2=0, Rl= 10 K and V1=5V find i) Il

ii)Vl iii) Vo21) What is offset error voltage? Explain the different types of offset error voltages

and currents

22) Explain any two frequency compensation techniques for an op amp.


2/5

23) What are the important features of an instrumentation amplifier? Expression for

the output voltage of an instrumentation amplifier?

24) What do you understand by term Bridge linearization. derive an expression fordifferential D.C amplifier

25) Design a second order low pass filter at a cut off frequency of 1 K Hz.

26) Design a second order band pass filter with a mid band voltage gain Ao= 50(3udb) a centre frequency fo=160 Hz and a 3 db bandwidth B=16 Hz

27) With circuit diagram explain the operation of VCO

28) Derive an expression for voltage to current converter for a grounded load29) With the help of block diagram , explain the operation of PLL. Define lock range

and capture range.

30) Mention the applications of PLL

31) Explain the terms with respect of a S/H circuits: I) Aperture time ii) acquisitiontime iii) settling time iv) sample and hold accuracy iv) hold mode droop.

32) Write the general block diagram of a data acquisition system and explain the

function of each block.

33) Explain the working of a 4 bit R-2R ladder DAC. derive the expressions foroutput voltage.

34) Explain with circuit diagram, how to use 0800 DAC for unipolar and bipolaroperation.

35)Explain with a neat diagram the working of a dual slope ADC. derive an

expression , which relates input voltage , reference voltage , count registered inADC and its bits

36)For a dual slope ADC find T2, if i) vin = 100mv, given T1=83.33msec,

Vref=100mv

37) A 8 bit ADC outputs all 1s , when Vi=5.1 V find its i) Resolution ii) digitaloutput , when Vi=1.28

38) Explain the working of a 3 bit flash type ADC with suitable diagram

39) Explain the concept of sigma delta converter40) An 8 bit approximation ADC driven by 1 MHz clock. Find conversion time

41) Name the various stages available in an operational amplifier with the help of

simple circuits describe briefly the importance of each stage42) Explain with the help of circuit diagrams, the measurement procedure for the

following parameters. I) slew rate ii) CMRR iii) input offset voltage.

43) With the help of circuit diagrams and waveforms explain the operation of full

wave precision rectifier44) With the help of a neat circuit diagram explain the working of a triangular wave

generator. Derive an equation for the frequency of oscillations

45) List the important features of an instrumentation amplifier46) Design an astable multivibrator using OP-AMP to operate at 1 K Hz with a duty

cycle of 70% derive the equations used

47) Derive an equation for the frequency of oscillation and condition for oscillationsin an op- amp based RC phase shift oscillator

48) Draw the functional diagram of 555 timer and explain its operation.

49) Design an astable multi using 555 timer to generate 1 K Hz square with 60% duty

cycle.


3/5

50) With the help of block diagram explain the working of 723 IC regulators.

51) with the help of circuit diagrams, explain the working of simple current limiting

and linear current fold back limiting in IC voltage regulators.52) Design a voltage regulator using 723 IC to get an output voltage if 15 volts and

that with current limiting at .1 A

53) Write short notes on: i) Temperature sensor ( AD 590 IC) ii) PLL iii) switchingregulator iv) logarithmic amplifier.

54) With reference to the op amp, explain the following terms with figures and

representative numbers. I) loop gain, ii) non linear distortion reduction iii)common mode rejection ratio iv) effect of feedback on disturbances and noise v)

gain desensitivity.

55) With reference to op amp used as amplifier, explain the following with neat

figures: i) Bridge linearization ii) digitally programmable gain iii) flying capacitortechniques iv) ground loop interference eliminations)Effect of resistance

mismatches.

56) Design a programmable instrumentation amplifier having an overall gain of !v/v,

10v/v and 1000v/v . show the final design57) With reference to op amps used as active filters , explain the following terms with

neat figures: I) active tone control ii) graphic equalizers iii) KRC filters iv) Statevariable and Bi quad filters v) Sensitivity w.r.t component variations filter

configurations

58) Impedance converters are active RC circuits designed to simulate frequencydependent elements such inductances for use in active filter synthesis, design a

generalized impedance converter using op amps

59) Switched capacitor are based on the integrator configurations, realize MF -10

switched capacitor filter using op amps60) With ref to commercial op amp chips, explain the following terms with detailed

figure and curves i) over load protection ii) power supply rejection ratio iii) open

loop and closed loop response iv) gain bandwidth trade off v) slew rate limiting61) List out the performance specifications of a commercial DAC

62) Bring out the specific attributes of the following D-A conversion techniques and

identify the typical application each one is suitable for i) weighted resistor DACii) weighted capacitor DAC iii) potentiometer DAC iv) R-2R ;adders- current and

voltage mode

63) List out 5 essential specifications of a commercial ADC

64) With ref to PLL explain the following specifications i) lock and capture ii) firstand second order loop iii) phase comparator.

65) Draw general block diagram of data acquisition system. Explain function of each

block66) With neat circuit diagram explain the working of a high level multiplexer and a

low level multiplexer

67) Explain the following terms with respect to a sample and hold circuit i) aperturetime ii) settling time iii) hold mode droop iv) acquisition time v) sample and hold

accuracy.

68) Compare the performance of BJT. JFET and MOSFET switches


4/5

69) Explain the working of 4 bit R-2R ladder DAC. Derive the expressions for output

voltage.

70) A binary weighted resistance DAC has 6 bits and reference voltage of 10 v.calculate the minimum values of R to be reconnected at the MSB input circuit

such that the max output current does not exceed 10 mA. Also find the smallest

value of current which is quantized71) With a neat block diagram and timing waveforms, discuss the working of a single

slope ADC

72) With the help of circuit diagram, explain the working of a counter ramp typeADC

73) With a neat block diagram explain the working of a successive approximation

ADC

74) For a 3 bit successive approximation ADC with 100 KHz clock, find i) Maxconversion time ii) Mass conversion rate

75) For a 8 bit counter ramp type ADC with 100 KHz clock, find i) maximum

conversion time ii) maximum conversion rate.

76) Explain with a neat diagram the working of dual ramp ADC , derive anexpression which relates the input voltage, reference voltage, count registered in

ADC and its bits77) Explain 0816 IC and list its features

78) Explain with circuit diagram how to use 0800 DAC for unipolar and Bipolar

operation79) Explain any three applications of D/A converters and two applications of A/D

converters

80) Write short notes : i) delta to sigma converters ii) digital multimeters iii) converter

specifications iv) voltage to frequency ADC81) Explain in brief i) input offset voltage ii) input bias currents iii) input offset error

compensation

82) With a neat circuit diagram diagram explain the external offset null ling for theinverting and the integrator configuration

83) Write a brief note on the necessity of signal conditioning circuits

84) With a circuit schematic explain the high sensitivity I-V converter and derive anexpression for the multiplication factor and also numerator its application as

photo detectors with circuit diagrams

85) Derive and expression for V-I converter for grounded load converter

86) Derive an expression for the output voltage in case of an voltage amplifier.87) Mention the requirements and the two categories of VFCs

88) Explain in detail with neat circuit diagram any one of the category of VFC

89) Explain in detail floating load current amplifier and grounded load currentamplifier

90) Explain in detail with neat circuit diagram about the ground loop interference

elimination91) Derive the equation for common mode rejection ratio with the imbalance factor

92) Explain in detail with circuit diagram the frequency to voltage conversion and

explain with block diagram typical VFC-FVC arrangement for transmitting

analog information in isolated form


5/5

93)With neat block diagram give a brief explanation of A/D converter and its

classification

94) Give a brief discussion of DAC 0800 with its pin diagram , specifications and keyfeatures

95) Explain in detail with relevant diagrams the applications of DAC as i)

programmable gain amplifier ii) signal generator96) With a neat block diagram of A/D and D/A converter explain any of the six

converter specifications

97)With the block diagram explain the working or data acquisition and datadistribution

98) With the basic block diagram define the sample and hold phenomena

99) Explain the operation of the sample and hold phenomena using any one circuit

100)Explain the sample and hold accuracy with neat circuit diagrams.

signal cond ckts

Documents