R-2R Ladder DAC Explained (with Solved Example)

In this video, R-2R ladder type Digital to Analog Converter has been explained with a solved example.

By watching this video, you will learn the following topics:

0:23 Advantages of R-2R ladder DAC

1:58 Calculation of the output impedance of R-2R ladder Network

3:47 Calculation of the Output Voltage of 3 -bit R-2R ladder network

15:35 Solved Example

R-2R Ladder DAC

By using the R-2R ladder network this type of DAC is designed.
As this DAC is using only two types of the resistor (R and 2R), it has certain advantages over Binary Weighted Resistor DAC

Advantages of R-2R ladder DAC:

1) Uses only two values of Resistors
- Easy and accurate fabrication is possible

2) Easily scalable to any desired number of bits

3) Output impedance is R, regardless of the number of bits

Commercially this type of DAC is available starting from 6-bit to 20-bit.

In this video, the calculation of 3-bit DAC is explained in detail. And using the same method it is possible to find the output for n-bit DAC.

Check out the other useful videos related to ADC and DAC:

1. Introduction to ADC and DAC
https://youtu.be/HicZcgdGxZY

2. Binary Weighted Resistor DAC
https://youtu.be/PoOm_G4s1dE

3. Thevenin's Theorem
https://youtu.be/8udwPc5pCoA


This video will be helpful to all the students or science and engineering in understanding the basics and the design of R-2R Ladder Type DAC.

#DAC
#R-2RLadderDAC
#DigitalToAnalogConverter

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