Articles ADC, DAC

Despite the increasing availability and declining cost of on-chip analog peripherals, the humble PWM DAC retains its appeal as a “free” DAC [ 1 ] that can repurpose an uncommitted DIO pin and counter/timer module, add a simple low pass ...

Known devices for taking the square root contain an operational amplifier and a multiplier connected in a feedback loop. The accuracy of these devices depends on the method of building the multiplier, with the most accurate using logarithm and ...

Thomas Tzscheetzsch, Analog Devices Analog Dialogue Question: How could a multiplying DAC be used other than as a DAC? Answer: Most digital-to-analog converters (DACs) are operated with a fixed positive reference voltage and output voltage or a ...

Alan Walsh, Analog Devices Precision measurement is extending into application areas that require greater and greater power efficiency. This is particularly true with the advent of IoT, which is driving greater need for wireless sensor nodes with ...

Alan Walsh, Analog Devices Part 1 If the ADC throughput is reduced to 10 kSPS then the current consumption of the ADC scales linearly down to 15 uA (factor of ~100) and correspondingly, the switching frequency ripple of the ADP5300 scales to 46.5 ...

Daniel E. Fague, Analog Devices Analog Dialogue Abstract High speed data converters have been used in communications applications for many years and can be found in much of the equipment that forms the basis of our connected world, from cellular ...

A simple op amp clipping circuit can limit input-voltage excursions into an ADC, thus preventing input overload and possible damage to the converter. It can be a challenge to match the voltage range of an analog signal to the input range of an ...

Alan Walsh, Analog Devices EDN A common issue that arises when designing an ADC circuit is how to protect the ADC inputs from over voltage. Protection of ADC inputs have many scenarios and potential solutions. ADCs from all vendors have similar ...

People have been converting digital-to-analog quantities for a long time. Probably among the earliest uses was the summing of calibrated weights (Figure A1, left) in weighing applications. Early electrical digital-to-analog conversion inevitably ...

Umesh Jayamohan, Analog Devices Analog Dialogue Introduction The design of the input, or front end, of any high-performance analog-to-digital converter (ADC), especially an RF-sampling ADC, is critical to achieving the desired system-level ...