A deglitching circuit for the AA50 D/A converter |
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| Authors: | James H. Howard Donald C. Burgy James A. Ballas |
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| Affiliation: | 1. Department of Psychology, Catholic University of America, 20064, Washington, D.C.
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| Abstract: | Switching transients or “glitches” are frequently encountered in signal processing applications involving digital-to-analog (D/A) conversion. A low-cost “deglitching” circuit is described and implemented for the Digital Equipment Corporation AA50 D/A converter option on the PDP-8/e minicomputer. Switching transients were eliminated using a noninverting, unity-gain sample-and-hold circuit (employing Datei System’s SHM-IC-1). Switching transients were reduced to below-noise levels across a wide range of output levels and sampling rates. |
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