US 11,929,748 B2
Wobulated signal generator
Ugo Mureddu, Fuveau (FR); Gilles Pelissier, Champagnier (FR); and Guillaume Reymond, Luynes (FR)
Assigned to STMICROELECTRONICS (GRENOBLE 2) SAS, Grenoble (FR); and STMICROELECTRONICS (ROUSSET) SAS, Rousset (FR)
Filed by STMICROELECTRONICS (GRENOBLE 2) SAS, Grenoble (FR); and STMICROELECTRONICS (ROUSSET) SAS, Rousset (FR)
Filed on Nov. 16, 2022, as Appl. No. 18/056,153.
Claims priority of application No. 2112261 (FR), filed on Nov. 19, 2021.
Prior Publication US 2023/0163754 A1, May 25, 2023
Int. Cl. H03K 5/133 (2014.01); H03K 5/156 (2006.01); G11C 7/22 (2006.01); G11C 8/18 (2006.01)
CPC H03K 5/133 (2013.01) [H03K 5/1565 (2013.01); G11C 7/222 (2013.01); G11C 8/18 (2013.01)] 29 Claims
OG exemplary drawing
 
1. A device, comprising:
a chain of delay elements including first delay elements, second delay elements, and third delay elements;
control circuitry coupled to the chain of delay elements; and
an output node coupled to the chain of delay elements, wherein the control circuitry, in operation:
enables a number of the first delay elements;
disables a number of the third delay elements;
enables a selected number of the second delay elements, defining a period of time between two consecutive rising edges of a digital wobulated signal at the output node;
monitors an average frequency of the digitally wobulated signal; and
selectively modifies the number of enabled first delay elements and the number of disabled third delay elements based on the monitored average frequency of the digitally wobulated signal.