DIGITAL-TO-ANALOG AND ANALOG-TO-DIGITAL CONVERTERS
37 sections
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Sections
Navigate through the learning materials and practice exercises.
What we have learnt
- DACs convert digital signals to analog voltages, and their performance is defined by specifications such as resolution, full-scale output voltage, and settling time.
- ADCs perform the reverse operation, converting analog signals into digital data with characteristics including conversion time, quantization error, and sampling rate.
- The R-2R ladder DAC is a practical design due to its simplicity in using only two resistor values, and the advantages of switched capacitor circuits make them vital in modern IC design.
Key Concepts
- -- DigitaltoAnalog Converter (DAC)
- A device that converts digital data (binary) into an analog voltage or current, essential for interfacing digital systems with the analog world.
- -- AnalogtoDigital Converter (ADC)
- A device that converts an analog signal into a digital number, enabling real-world signals like temperature and sound to be processed by digital devices.
- -- R2R Ladder DAC
- A type of DAC that uses a ladder network of resistors in two values (R and 2R) to achieve digital-to-analog conversion with relatively high precision.
- -- SingleSlope ADC
- An ADC that compares an analog input voltage with a ramp voltage generated by an integrator, measuring the time taken for the ramp to match the input voltage.
- -- Successive Approximation ADC
- An ADC that determines a digital output that best represents the analog input voltage using a binary search algorithm within N clock cycles.
- -- Switched Capacitor Circuit
- A technique in integrated circuits that emulates resistive behavior using capacitors and switches, allowing for smaller components and better accuracy in filters.
Additional Learning Materials
Supplementary resources to enhance your learning experience.