| 摘要 |
This multi-flash analog-to-digital converter (ADC), in particular dual flash ADC, has extremely high speed and resolution. The final resolution of a comparator/multiplexer section can be effectively doubled. For instance, a 16-bit ADC can employ 300 rather than 255 comparators. A monolithic integration can be accomplished. A resistive network is coupled to a current source and to a reference signal for providing a plurality of comparison signals. A comparator/multiplexer section compares the comparison signals against ground, selects one of the comparison signals and produces a code. The ADC input signal and selected comparison signal are subsequently applied to an amplifier which provides the reference signal. Two codes are encoded and converted into the output code of the ADC.
|
