US 12,249,979 B2
Signal converting circuit
Chien-Tsu Yeh, Hsinchu (TW); Hsi-En Liu, Hsinchu (TW); and Yi-Chun Hsieh, Hsinchu (TW)
Assigned to Realtek Semiconductor Corporation, Hsinchu (TW)
Filed by Realtek Semiconductor Corporation, Hsinchu (TW)
Filed on Feb. 24, 2023, as Appl. No. 18/173,785.
Claims priority of application No. 111108669 (TW), filed on Mar. 9, 2022.
Prior Publication US 2023/0291397 A1, Sep. 14, 2023
Int. Cl. H03K 17/14 (2006.01); H03K 5/00 (2006.01); H03K 5/01 (2006.01)
CPC H03K 17/14 (2013.01) [H03K 5/01 (2013.01); H03K 2005/00286 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A signal converting circuit, comprising:
a phase interpolator circuit configured to convert a plurality of input clock signals into an output clock signal according to a digital signal; and
a bias voltage generation circuit comprising a temperature sensitive circuit and a reference circuit, wherein the bias voltage generation circuit is electrically coupled to the phase interpolator circuit, configured to generate a bias voltage according to a reference information and configured to output the bias voltage to the phase interpolator circuit, so that the output clock signal has a predetermined phase corresponding to one of a plurality of bit configurations of the digital signal,
wherein the reference information is relevant to a change of the phase interpolator circuit due to a temperature variation and another change of the phase interpolator circuit due to a manufacture process variation, and the reference information comprises a temperature dependent current generated by the temperature sensitive circuit according to an operating temperature of the signal converting circuit and an equivalent resistance of the reference circuit due to the manufacture process variation.