US 12,132,487 B2
Signal generator circuit, corresponding device and method
Marco Pinsero, Milan (IT); Marco Attanasio, Olbia-Tempio (IT); and Alberto Cattani, Cislago (IT)
Assigned to STMicroelectronics S.r.l., Agrate Brianza (IT)
Filed by STMicroelectronics S.r.l., Agrate Brianza (IT)
Filed on Oct. 12, 2022, as Appl. No. 17/964,420.
Claims priority of application No. 102021000027083 (IT), filed on Oct. 21, 2021.
Prior Publication US 2023/0128113 A1, Apr. 27, 2023
Int. Cl. H03K 4/50 (2006.01)
CPC H03K 4/50 (2013.01) 31 Claims
OG exemplary drawing
 
1. A circuit, comprising:
a current generator configured to source a current to a current node;
a first switch intermediate the current node and a first output node;
a second switch intermediate the current node and a second output node;
a first capacitor having a first plate coupled to the first output node and a second plate coupled to a first intermediate node;
a second capacitor having a first plate coupled to the second output node and a second plate coupled to a second intermediate node;
a third switch intermediate the first intermediate node and ground;
a fourth switch intermediate the second intermediate node and ground;
a fifth switch intermediate the current node and the first intermediate node;
a sixth switch intermediate the current node and the second intermediate node; and
a control circuit configured to selectively actuate the first through sixth switches to generate a first current ramp signal at the first output node and a second current ramp signal at the second output node, wherein said first and second current ramp signals have a same period and are out of phase with each other by one-half of said same period.