4-bit digital to analog converter using R-2R ladder and binary weighted resistors

• Main Authors: Diosanto, Jocelyn, Batac, Marielle Leann M., Pereda, Krizelle J., Caldo, Rionel B.
• Format: text
• Published: Animo Repository 2017
• Subjects: Digital-to-analog converters; Ladder networks; Printed circuits; Operational amplifiers; Electrical and Electronics
• Online Access: https://animorepository.dlsu.edu.ph/faculty_research/3704; https://iopscience.iop.org/article/10.1088/1755-1315/69/1/012194
• Institution: De La Salle University

The use of a 4-bit digital-to-analog converter using two methods; Binary Weighted Resistors and R-2R Ladder is designed and presented in this paper. The main components that were used in constructing both circuits were different resistor values, operational amplifier (LM741) and single pole double throw switches. Both circuits were designed using MULTISIM software to be able to test the circuit for its ideal application and FRITZING software for the layout designing and fabrication to the printed circuit board. The implementation of both systems in an actual circuit benefits in determining and comparing the advantages and disadvantages of each. It was realized that the binary weighted circuit is more efficient DAC, having lower percentage error of 0.267% compared to R-2R ladder circuit which has a minimum of percentage error of 4.16%.