집적된 수동 소자 변동에 의한 RC 시상수 자동 보정 기법 = Automatic Tuning Architecture of RC Time - Consthat due to the Variation of Integrated Passive Components

다국어 초록 (Multilingual Abstract)

In this paper, on-chp atomatic tuning circuit, using proposed integration level approximation technique, is designed to tuning of the variation of RC time-constant due to aging or temperature variation, etc. This circuit reduces the error, the difference between code values and real outputs of integrator, which is drawback of presented dual-slope tuning circuit and eliminates modulations of processing signals in integrated circuit due to fixed tuning codes during ordinary operation. This system is made up of simple integrator, A/D converter and digital control circuit and all capacitors are replaced by programed capacitor arrays in this system. This tuning circuit with 4 bit resolution achieves -9.74 ∼ +9.68% of RC time constant error for 50 resistance variation.