Electronics - Analog and Digital Converters - Discussion


The practical use of binary-weighted digital-to-analog converters is limited to:

[A]. R/2R ladder D/A converters
[B]. 4-bit D/A converters
[C]. 8-bit D/A converters
[D]. op-amp comparators

Answer: Option B


No answer description available for this question.

Satyajit said: (Mar 6, 2012)  
Please some one explain this.

Arijit said: (Jul 22, 2012)  
The binary-weighted DAC, which contains individual electrical components for each bit of the DAC connected to a summing point. These precise voltages or currents sum to the correct output value. This is one of the fastest conversion methods but suffers from poor accuracy because of the high precision required for each individual voltage or current. Such high-precision components are expensive, so this type of converter is usually limited to 8-bit resolution or less.

Gopal said: (Jul 10, 2013)  

As you increase number of bits the resistor values also gets doubled. At higher range you can't find precise resistor values which would add up to significant error due to tolerance of resistors. Hence it is not recommended to use R-2R network beyond 4 bits.

Mukhtarhusain Sindhi said: (Jun 27, 2016)  
I Agree with Arijit.

Syamala said: (Jul 19, 2018)  
In ace gate material it is 8 bit right?

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