This paper describes a digital self-calibration circuit for optical rotary encoders. The circuit performs dynamic calculation of the threshold level used by the waveform-shaping section of the read-out channel. This avoids the need for manual calibration, provides thermal stabilisation, and prevents performance degradation. The proposed digital calibration system was integrated in a conventional 0.8 um technology and was then experimentally evaluated
A Digital Self-Calibration Circuit for Optical Rotary Encoder Microsystems
Gottardi, Massimo
2001-01-01
Abstract
This paper describes a digital self-calibration circuit for optical rotary encoders. The circuit performs dynamic calculation of the threshold level used by the waveform-shaping section of the read-out channel. This avoids the need for manual calibration, provides thermal stabilisation, and prevents performance degradation. The proposed digital calibration system was integrated in a conventional 0.8 um technology and was then experimentally evaluatedFile in questo prodotto:
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