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“Classic R2R array has a flaw associated with the problem of signal conversion while virtual zero crossings. At this moment all logical circuits are switched simultaneously and even tiny non-synchronism causes an overshoot of stray impulses (the so-called glitches).

In Super R2R virtual zero crossing poses no problem because R2R arrays have balanced discrete sign-magnitude hybrid ladder topology. Positive and negative half-waves of the signal are processed independently, each by a separate array and are mixed only at the output. As a result, there’s no virtual zero crossing at all and no corresponding problems!”

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