Electrical Engineering › Section W · Signal conversion and data transmission › Topic W.1
Analog-to-digital and digital-to-analog conversion
Sound, temperature and light are analog, but processors work in numbers. Converters sit at that boundary, and their sampling rate, resolution and architecture decide how faithfully a digital system can sense and drive the real world.
In this topic
- Sampling and the Nyquist rule
- Worked example: an alias appears
- Quantisation and resolution
- Worked example: reading a temperature sensor
- The flash ADC
- The successive-approximation ADC
- Worked example: an 8-bit SAR conversion
- Dual-slope and delta-sigma ADCs
- Digital-to-analog converters
- Converter performance and testing
- Common mistakes to avoid
- Key takeaways
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