Accurate Linearity Testing of A/d Converters in the Presence of Ground Bounce Noise
نویسنده
چکیده
The presence of digital drivers in a mixed-signal circuit such as an A/D converter causes simultaneous switching noise or ground bounce noise on the load board. Coupling of this noise to the sensitive analog lines causes inaccuracy in the measurement of A/D converter linearity specifications. Unlike, the other sources of noise, the ground bounce noise is not a Gaussian distributed random noise. Rather, it depends on the drivers that switch their logic state during a code transition. In this paper, a methodology to reduce the inaccuracy in the measurement of linearity specifications of an A/D converter in the presence of ground bounce noise is presented.
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