Chapter 4 - Understand the operation of a DAC according to its timing diagram and devise a circuit that can operate at a desired range DAC의

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Understand the operation of a DAC according to its timing diagram, and devise a circuit that can operate at a desired range. DAC의 timing diagram에 따른 사용 방법을 이해하고 원하는 range에 맞추어 입출력하 는 회로를 제작한다. ① Understand the characteristics and the operating principle of a DAC utilizing the current mirror using R-2R ② Understand the characteristics and the operating principle of DACs 3. Theory Thermometer DACs and binary weighted DACs require large silicon area since 2 N components are required. Binary weighted DACs also require a very precise ratio of components which limit the resolution of the DAC for components with larger values have lower accuracy. To devise a DAC while utilizing less number of devices and smaller ratio between the components, R-2R structure as shown in figure 4-1 can be used. V ref R R R R 2R 2R 2R R R f V o R 2R R 2R R 2R a c b I 2I I 4I 2I 4I 8I Figure 4-1 R-2R DAC In figure 4-1, the node of 2R that is connected to a switch and node ⓐ is, regardless of the switch configuration, always set to 0. In this case, since the two resistors on the right are connected in series, the equivalent resistance from node...
View Full Document

This note was uploaded on 11/08/2011 for the course EE 111 taught by Professor Kim during the Spring '11 term at Korea University.

Page1 / 6

Chapter 4 - Understand the operation of a DAC according to its timing diagram and devise a circuit that can operate at a desired range DAC의

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online