A/D converter with minimized transfer error

Details A/D converter with minimized transfer error A/D converter with minimized transfer error

2006-08-22

2006-08-22

Nguyen, John B (Department: 2819)

Coded data generation or conversion

Converter calibration or testing

C341S144000, C341S145000

Reexamination Certificate

active

07095346

ABSTRACT:
An A/D converter has at least one converter stage which, respectively, has a sample and hold circuit for sampling an analog input signal. The converter stage also includes a comparator unit that compares the analog input signal with a reference value in order to produce a digital output value from the converter stage, a digital/analog converter for converting the digital output value into an analog signal, a subtractor for subtracting the analog signal from the sampled input signal, a signal amplifier for amplifying the output signal which is output by the subtractor with a particularl singal gain factor for the next converter stage, and a weighting unit for multiplying the digital output value by a multiplier for addition to further weighted output values from converter stages to produce the digital output value from the A/D converter.

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