US 11,658,670 B2
System and method of digital to analog conversion adaptive error cancelling
Koon Lun Jackie Wong, Irvine, CA (US); and Chi-Hung Lin, Irvine, CA (US)
Assigned to Avago Technologies International Sales Pte. Limited, Singapore (SG)
Filed by Avago Technologies International Sales Pte. Limited, Singapore (SG)
Filed on Jan. 28, 2021, as Appl. No. 17/160,529.
Prior Publication US 2022/0239303 A1, Jul. 28, 2022
Int. Cl. H03M 1/06 (2006.01); H03M 1/10 (2006.01); H04B 1/04 (2006.01)
CPC H03M 1/0617 (2013.01) [H03M 1/1009 (2013.01); H04B 1/04 (2013.01)] 20 Claims
OG exemplary drawing
1. A digital to analog converter, comprising:
a digital to analog conversion circuit comprising a digital input, an analog output, and a cell array;
an integrator;
an analog to digital converter (ADC);
a summer coupled to an ADC, wherein the integrator, the ADC, and the summer are coupled between the digital input and the analog output, the summer being configured to provide an error signal in response to an input at the digital input and a data derived from an output of the integrator, wherein the integrator receives an analog signal and provide an integrated signal at the output of the integrator; and
an adaptation circuit coupled to the summer, wherein the adaptation circuit provides controls signals to the cell array.