WorksheetsLinear-Digital IC
Total questions: 15
Worksheet time: 11mins
What is the main function of a comparator?
A. Amplify signals
B. Convert digital to analog signals
C. Compare two input voltages
D. Store binary data
In a non-inverting comparator, what happens when the input voltage is greater than the reference voltage?
Output goes to –VSAT
Output goes to +VSAT
Output stays zero
Output becomes undefined
Which component converts binary digital signals into analog voltage?
ADC
Comparator
DAC
Oscillator
What does ADC stand for?
Analog to Digital Converter
Advanced Data Controller
Analog Data Circuit
Automatic Digital Control
In a dual-slope ADC, the analog signal is first applied to:
A timer
A comparator
An integrator
A counter
6. Which timer IC is commonly used in electronics?
IC 4011
IC 555
IC 7805
IC 4040
What type of wave is generated in astable mode of a 555 timer?
Sine wave
Triangle wave
Square wave
Sawtooth wave
The output frequency of a Voltage-Controlled Oscillator (VCO) depends on:
A. Temperature
B. Resistance
C. Input voltage
D. Output current
B
C
A
D
Which block in a Phase-Locked Loop adjusts the VCO to match input frequency?
Counter
Timer
Comparator
Phase detector
What is one purpose of an interface circuit?
Match signal levels
Reduce temperature
Store energy
Create analog signals
In a dual-slope ADC, when does the counter begin counting during the falling slope phase?
When the digital output is latched
When the fixed reference is connected to the integrator
When the integrator reaches its maximum value
When the analog input is first applied
In a Phase-Locked Loop, if the input frequency never matches the VCO frequency, the system is in:
Capture mode
Lock mode
Tracking mode
Out-of-lock mode
What is the primary reason ladder networks are used in DACs and ADCs?
To simplify clocking
To amplify analog output
To provide accurate binary-weighted voltages
To store digital values
Which of the following statements about interface circuitry is true?
It ensures correct voltage/current levels between devices
It converts analog signals to power
It stores digital logic for backup
It controls radio-frequency signals
In a 555 timer configured in monostable mode, what determines how long the output stays high after being triggered?
The frequency of the clock input
The threshold voltage of the timer
The values of an external resistor and capacitor
The voltage supply level
