EDN

Demystifying Delta-Sigma ADCs

This in-depth article covers the theory behind a Delta-Sigma analog-to-digital converter (ADC). It specifically focuses on the difficult to understand key digital concepts of over-sampling, noise ...
EDN

Delta-sigma ADCs in a nutshell, part 2: the modulator

A delta-sigma converter uses many samples from the modulator to produce a stream of 1-bit codes. The delta-sigma ADC accomplishes this task by using an input-signal quantizer running at a high sample ...
Electronic Design

Using Delta-Sigma Can Be As Easy As ADC (Part 5)

My last column showed how a single-stage delta-sigma modulator (DSM) produces an output that is a sum of the low pass-filtered input signal and the high pass-filtered quantization noise (see “Part 4,” ...
Semiconductor Engineering

Full-Circuit ADC Verification With Analog FastSPICE

Analog to Digital Converters (ADCs) are critical components in high-speed, high-resolution applications where an analog or RF signal has to be processed, stored, or transported in digital form. ADC ...
Electronics Weekly

Electronica: ADI cuts noise of wideband sigma-delta ADC

Analog Devices has introduced a wideband analogue-to-digital converter (ADC) which it claims does not have the noise-level penalties usually attributed to multi-MHz bandwidth ADCs. The design is based ...
Electronic Design

Using Delta-Sigma Can Be As Easy As ADC (Part 4)

Based on the amount of e-mail I received after Part 3 of this series (Nov. 7, 2008, p. 18; www.electronicdesign.com, ED Online 19948), many of you have already guessed that an incremental integrator ...