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ISCAS
2007
IEEE

Parallel current-steering D/A Converters for Flexibility and Smartness

9 years 5 months ago
Parallel current-steering D/A Converters for Flexibility and Smartness
—This paper presents a DAC architecture built on parallel current-steering sub-DAC entities. Two main novelties are explored: flexibility and smartness. Firstly, a number of available operating modes (op-modes) can set the overall DAC performance and functionality. These op-modes transfer some of the important design trade-offs to the end-user and constitute the DAC flexibility. The main examples include: resolution-power-number of DACs, static-dynamic performance, etc. Secondly, specific signal processing techniques become possible. The main examples of such techniques include: full self-calibration, cancellation of harmonic distortion (HD) components, and linearity improvement through redundancy. This paper concentrates on a method to suppress undesired HD components through DA processing of phase shifted replicas of the main input signal. The presented theoretical concepts are realized in a 14-bit DAC built from 4 parallel 12-bit sub-DACs. Transistor simulations and a layout desig...
Georgi I. Radulov, Patrick J. Quinn, Pieter Harpe,
Added 04 Jun 2010
Updated 04 Jun 2010
Type Conference
Year 2007
Where ISCAS
Authors Georgi I. Radulov, Patrick J. Quinn, Pieter Harpe, Hans Hegt, Arthur H. M. van Roermund
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