3) In R-2R ladder network DAC the input resistor for each input is
a) Rb) 3R c) 4R d) 2R
ETTE
ulatoris
bit.
Answers
Answer:
In R-2R ladder network DAC the input resistor for each input is
a) Rb) 3R c) 4R d) 2R
ETTE
ulatoris
bit.
lol
Answer:
Concept:
An electrical circuit that uses repeated resistor units is known as a resistor ladder. The string resistor ladder and the R-2R ladder are the two configurations that are explored below. Using repetitive arrangements of exact resistor networks in a ladder-like pattern, an R-2R ladder is a quick and low-cost approach to do digital-to-analog conversion. The non-repetitive reference network is implemented using a string resistor ladder.
Given:
In R-2R ladder network DAC the input resistor for each input is
a) R
b) 3R
c) 4R
d) 2R
Find:
find the correct answer for the given question
Answer:
The answer is option b) 3R
The input resistance in an R-2R ladder D/A converter is 3R for each input.
The R-2R Digital-to-Analogue Converter, also known as the DAC, is a data converter that transforms a digital binary number into an analogue output signal proportionate to the value of the digital number using two precision resistors.
The binary weighted digital-to-analogue converters has an analogue output voltage that is the weighted total of the separate inputs, in contrast to the R-2R DAC. Its design is therefore expensive and unworkable for the majority of DACs needing lesser levels of resolution because it necessitates a wide variety of precision resistors within its ladder network.
This type of data converter arrangement might be effective for a D/A converter with a few bits of resolution since the binary weighted DAC is based on a closed-loop inverting operational amplifier employing summing amplifier topology. But a much easier method is to build an
R-2R Digital-to-Analogue Converter utilising a resistive ladder network, which only needs two precise resistances.
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