The R-2R ladder network is preferred in DACs over a binary-weighted resistor DAC because:

D/A Converter

Quiz
•
Engineering
•
University
•
Hard
sivasankari n
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
It uses fewer resistors
It can be integrated on-chip easily with matched resistor values
It operates at higher currents
It reduces the need for switches
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the primary function of the "2R" resistor in the R-2R DAC ladder?
To match the input voltage
To ensure equal current splitting and maintain linearity
To limit the power consumption
To shift the output voltage level
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
One drawback of an R-2R ladder DAC in industrial applications is:
Difficulty of integration
High power dissipation
Sensitivity to resistor mismatch
Lack of scalability to high resolution
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In a voltage-mode R-2R DAC, the output is taken from:
The current sink
The summing node of the resistor network
The reference ground
The positive supply rail
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Current-mode R-2R DACs are advantageous in high-speed applications because
They are cheaper to manufacture
They consume more power
Current switching is faster and less affected by parasitic capacitance
They don't require calibration
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Voltage-mode R-2R DACs are commonly used when:
Output impedance must be low and driving voltage is needed
Low current operation is mandatory
Power loss is acceptable
Driving high-capacitance loads
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In CMOS DACs, digital switches are implemented using:
Diodes
BJTs
Transmission gates (CMOS pass transistors)
Phototransistors
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