US 12,439,204 B2
Efficient seamless switching of sigma-delta modulators
Dietmar Straeussnigg, Villach (AT)
Assigned to Infineon Technologies AG, Neubiberg (DE)
Filed by Infineon Technologies AG, Neubiberg (DE)
Filed on Apr. 11, 2023, as Appl. No. 18/298,854.
Application 18/298,854 is a division of application No. 17/395,077, filed on Aug. 5, 2021, granted, now 11,659,329.
Prior Publication US 2023/0247359 A1, Aug. 3, 2023
Int. Cl. H04R 3/04 (2006.01); H03M 1/18 (2006.01); H03M 3/00 (2006.01); H03M 5/08 (2006.01)
CPC H04R 3/04 (2013.01) [H03M 1/18 (2013.01); H03M 3/488 (2013.01); H03M 3/00 (2013.01); H03M 5/08 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A digital modulator comprising:
a summer;
at least one integrator coupled to the summer;
a quantizer coupled to the at least one integrator;
a state detection and control component coupled to an output of the at least one integrator; and
a variable gain block coupled between the quantizer and the summer,
wherein a gain control output of the state detection and control component is coupled to a gain control input of the variable gain block.