DAC and ADC: The Reciprocal Journey Between Digital and Analog

DAC and ADC: The Reciprocal Journey Between Digital and Analog

“Analyzing the working principles of digital-to-analog converters and analog-to-digital converters—from resistor ladder networks to Delta-Sigma modulation techniques.” Microcontrollers are “consuming” the entire world. Nowadays, even the most basic tasks like blinking an LED are cheaper and simpler with microcontrollers than building oscillating circuits with discrete components or relying on the once ubiquitous 555 timer chip. … Read more

Why UART Serial Communication Requires 16x Oversampling

Why UART Serial Communication Requires 16x Oversampling

Enhancing anti-interference is one reason. Standard UART can choose 16x sampling or 64x sampling; I personally think it should be for convenient frequency division design. The RXD front end of the standard UART has a “1 to 0 transition detector.” When it continuously receives 8 ground level signals on RXD, the detector considers that the … Read more