Measure a Bipolar Signal with an Arduino Board
Sunday, August 14th, 2011Summary:
Arduino is a popular family of open source microcontroller boards. Hobbyists, students and engineers all over the world use this platform to quickly design and prototype a microcontroller driven circuit. One of its interfaces with the analog world is the ADC. Since these boards are mostly designed around an ATMEL ATmega32 or ATmega168 microcontroller, the ADC has 8 inputs and 10-bit resolution, making it suitable for many applications.
An ADC and DAC Least Significant Bit (LSB)
Tuesday, March 23rd, 2010Summary:
Articles on Internet and different books show how to calculate the Least Significant Bit (LSB), but they take into consideration either the voltage reference (Vref) or the full scale (FS) of the ADC or DAC. Many times this leads to confusion, as a few messages I received from my readers show. Therefore, this article shows both ways of defining the LSB, so that people will have a clear understanding how to treat an ADC’s (Analog-to-Digital-Converter) or DAC’s (Digital-to-Analog-Converter) LSB.
An ADC and DAC Differential Non-Linearity (DNL)
Saturday, August 1st, 2009Summary:
As in the case of INL, DNL is an important parameter of an ADC or DAC because it is a measure of their non-linearity. DNL stands for Differential Non-Linearity and quantifies the ADC or DAC precision.
An ADC and DAC Integral Non-Linearity (INL)
Sunday, July 26th, 2009Summary:
What is INL? This term describes the non-linearity of Analog to Digital Converters (ADC) and Digital to Analog Converters (DAC). INL stands for Integral Non-Linearity. Is this term important? Should we be concerned about this specification? The answer is yes.
