Method and apparatus for an ADC circuit with wider input signal swing

摘要: An analog-to-digital converter (ADC) system that converts an analog input signal into a digital output circuit uses method of shaping pseudo-random such the ADC can be used with signals having wider swings. The also includes quantizer comparator offset less than =/−¼ least significant bit (LSB) in stage calibrated for gain errors. A operating measuring amplitude and polarity voltage changing characteristics to ensure subsequent is not saturated. implementation alters based on when goes close positive rail, alternates between first range, negative second range.