US 12,395,181 B1
Methods and systems for calibrating a time-interleaved analog to digital converter (TIADC)
Matthew Maurice Kinsinger, Phoenix, AZ (US); and Phaneendra Bikkina, Tempe, AZ (US)
Assigned to Alphacore, Inc., Tempe, AZ (US)
Filed by Alphacore, Inc., Tempe, AZ (US)
Filed on Apr. 30, 2025, as Appl. No. 19/195,291.
Int. Cl. H03M 1/10 (2006.01); H03M 1/06 (2006.01); H03M 1/12 (2006.01)
CPC H03M 1/1023 (2013.01) [H03M 1/0607 (2013.01); H03M 1/121 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for calibrating a time-interleaved analog to digital converter (TIADC), the method comprising:
a first calibration phase that involves adjusting for at least one of offset error, gain error, and time skew of M subchannels of the TIADC; and
a second calibration phase that is implemented after the first calibration phase and that involves training a neural network to approximate a non-linear function of each of the M subchannels of the TIADC using an output from a reference channel as a ground truth.