12. Data Conversion Circuits – D/A and A/D Converters - Part C
This chapter delves into the functional aspects of digital-to-analog (D/A) and analog-to-digital (A/D) converters, defining their operating principles, terminologies, and various types. It explores critical operational terms and dimensions like resolution, quantization error, and coding types, while also detailing specific converter architectures including flash, counter, and sigma-delta converters. An understanding of these concepts is essential for effective signal conversion and data processing in digital electronics.
Sections
Navigate through the learning materials and practice exercises.
What we have learnt
- The code width reflects the smallest input voltage change recognized by the D/A converter and is significant for quantization.
- A/D converters operate in unipolar or bipolar modes depending on the signal polarity they can handle.
- Quantization error and full-scale error critically influence the accuracy of A/D conversions.
Key Concepts
- -- Resolution
- The smallest change in analog input voltage that can be distinguished by the A/D converter.
- -- Quantization Error
- The difference between the actual analog value and the quantized digital value.
- -- SigmaDelta Converter
- A type of A/D converter that uses oversampling and noise shaping to improve resolution.
- -- Flash A/D Converter
- A high-speed analog-to-digital converter that utilizes multiple comparators to achieve rapid conversion.
Additional Learning Materials
Supplementary resources to enhance your learning experience.