By Topic

Merging data converters and DSPs for mixed-signal processors

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Davis, H. ; Analog Devices Inc., Norwood, MA, USA ; Fine, R. ; Regimbal, D.

The use of sigma-delta conversion to produce high resolution without using analog components such as the precise resistors in an A/D (analog/digital) or a D/A (digital/analog) converter is reported. The use of sigma-delta technology solved the problem arising from the noise levels injected into the silicon substrate during digital switching (which limited the integration of both analog and digital circuitry on one VLSI chip) and allowed the implementation of the ADSP-21MSP50, the first mixed-signal processor. The basic elements of the converter are described, and its advantages and drawbacks as well as the implications for expanded DSP applications are examined. Included in the discussion are sampling and quantization noise, modulator design, frequency-domain analysis of the modulator, the use of digital filtering to minimize shaped-quantization noise, and the higher level of integration possible with this approach.<>

Published in:

Micro, IEEE  (Volume:10 ,  Issue: 5 )