A Quadratic Analog-to-Digital Converter

Harrison, D.; Staples, M. H.

doi:10.1109/tns.1980.4330859

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1980

1988

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“…Non-linear analogue-to-digital conversion (NL ADC) has been dealt with by many authors (for example, Harrison (1980) and Hafeth and Abdul-Karim (1984)). Each conversion method tries to solve the non-linear conversion of an analogue input for a specific equation and in a particular application.…”

Section: Introductionmentioning

confidence: 99%

Flexible non-linear analogue-to-digital converter

Hafeth

Abdul-Karim

1985

International Journal of Electronics

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A method is introduced for finding non-linear functions digitally. The design is based on voltage-to-frequency conversion (VFC) and decimal rate multiplication (DRM). A DC signal is applied to the VFC and analogue comparator, producing a digital number proportional to the square of the input voltage. For the second half-period, this digital number is applied together with the VFC output clock frequency to the DRM, producing a digital number proportional to the cubic and fourth powers of the input DC signal. Any of the three digital numbers can be selected and displayed.

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Section: Introductionmentioning

confidence: 99%