Frequently Asked Questions about Data Converters

Abstract: This article answers most of the common questions regarding data converters. Presented in a classic FAQ format, it addresses topics including: defining an ADC and DAC, and understanding their principal functions; the Nyquist, effects of charge injection; techniques for digital filtering; interfacing to a serial port, I²C interface, and SPI™ interface; bit banging; MICROWIRE interface; PCB (PC-board) layout tips and guidelines; grounding tips; bypass capacitor(s)' effect on performance; debugging ADC accuracy; and debugging noisy measurements.