The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 11, 2022
Filed:
Sep. 10, 2021
Mixed-signal Devices Inc., Irvine, CA (US);
Rakesh Kumar Palani, New Delhi, IN;
Shouri Chatterjee, New Delhi, IN;
Sweta Agarwal, New Delhi, IN;
Srikar Bhagavatula, Irvine, CA (US);
Mixed-Signal Devices Inc., Irvine, CA (US);
Abstract
Systems and methods for frequency reference generation are described. In an embodiment, a frequency reference circuit, includes: a bandgap proportional to temperature (PTAT) generator circuit that generates a bandgap PTAT current; a resistor complementary to temperature (CTAT) generator circuit that generates a resistor CTAT current; an adder that adds the PTAT current and the CTAT current to generate a constant current I; a switched-resistor (switched-R) circuit that receives the constant current Iand a previously generated output clock and generates an output; a bandgap voltage reference generator circuit that generates a bandgap voltage V; an integrator circuit that receives the output of the switched-R circuit and the bandgap voltage Vand generates an output; and a voltage-controlled oscillator (VCO) circuit that receives the output of the integrator circuit and generates a frequency reference.