rfsystem
Advanced Member level 3
capacitor mismatch digital calibration
To my understanding there are 3 methods to calibrate the residuals!
1. Hardware based methods. So changing something within the pipeline. For instance measuring or calibrating reference or residual voltages.
2. Measuring with a single DAC in front the residual voltages with a binary search. For each bit you have to measure two values. Process is by switching the stage residual-DAC-bit and observing the comparator bit of the next stage.
3. Statistic distribution method which uses uniform distributed testsignals and calculate form noneven distribution the postion of the residuals.
Any other?
To my understanding there are 3 methods to calibrate the residuals!
1. Hardware based methods. So changing something within the pipeline. For instance measuring or calibrating reference or residual voltages.
2. Measuring with a single DAC in front the residual voltages with a binary search. For each bit you have to measure two values. Process is by switching the stage residual-DAC-bit and observing the comparator bit of the next stage.
3. Statistic distribution method which uses uniform distributed testsignals and calculate form noneven distribution the postion of the residuals.
Any other?
