US 12,218,672 B2
Frequency multiplier calibration
Michael Henderson Perrott, Nashua, NH (US)
Assigned to TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed by TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed on Dec. 30, 2022, as Appl. No. 18/092,091.
Prior Publication US 2024/0223170 A1, Jul. 4, 2024
Int. Cl. H03K 5/14 (2014.01); H03K 5/00 (2006.01); H03L 7/08 (2006.01)
CPC H03K 5/14 (2013.01) [H03K 5/00006 (2013.01); H03L 7/0807 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
a frequency multiplier having a frequency multiplier input, a frequency multiplier output, and a delay calibration input, the frequency multiplier having a first delay circuit having a delay control input coupled to the delay calibration input; and
an error detection circuit having an input and a detection output, the input of the error detection circuit coupled to the frequency multiplier output, and the detection output coupled to the delay calibration input, the error detection circuit including a second delay circuit coupled between the input and detection output.