Compensation of Analog-to-Digital Converter Nonlinearities using Dither

Frequency Domain Analysis for Integral Nonlinearity Measurement in A/d Converters with Dither

The paper examines the problem of achieving a fast measurement of nonlinearity for a dithered converter. It is shown that, since dither removes small-scale systematic errors, measuring the remaining large-scale (smooth) nonlinearity can be efficiently achieved via a fast frequency domain test, formerly analyzed by the authors for conventional converters without dither. The test appears especial...

AN-804 Improving A/D Converter Performance Using Dither

Analysis and Dynamic Range Enhancement of the Analog-to-digital Interface in Multimode Radio Receivers

The rapidly developing wireless market has spawned a multitude of different standards for cellular, PCS, and wireless data. To allow users the ability to access services conforming to disparate standards, multimode handsets capable of software reconfiguration are needed. These ”software radios” are distinguished from their traditional counterparts by their strong reliance on digital channel fil...

Improving A/D Converter Performance Using Dither

Many analog-to-digital converter applications require low distortion for a very wide dynamic range of signals. Unfortunately, the distortion caused by digitizing an analog signal increases as the signal amplitude decreases, and is especially severe when the signal amplitude is of the same order as the quantizing step. In digital audio applications, for example, low-level signals occur often, so...

On the Dither Performance of High-Order Digital Equalization for Loudspeaker Systems*

Experimental results derived using real-time hardware together with supporting software simulations reveal that for infinite impulse response digital filters low-level chaos acts as self-dither, which both decorrelates truncation distortion and aids linearization of low-level digital-to-analog conversion nonlinearity. The process is examined for a range of filter responses, in particular those ...