Method for low-current oscillatory circuit with wide operation voltage and temperature compensation
US10951163B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 24, 2020 |
| Grant date | Mar 16, 2021 |
| Priority date | — |
| Expiry date | Mar 24, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B2200/0056
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A smart method is provided for a low-current oscillatory circuitry. The circuitry comprises an oscillator and a microcontroller unit (MCU). The oscillator comprises a proportional-to-absolute-temperature circuit connecting to a low-voltage regulator. The low-voltage regulator connects to a PMOS diode array and a delay unit circuit. The PMOS diode array connects to the MCU. The delay unit circuit connects to the MCU and a voltage converter. The method includes a normal temperature compensation algorithm; a smart learning algorithm of extra-high temperature compensation; and an ultra-high temperature compensation algorithm. Thus, clock variations are compensated; output frequency is stable and not affected by voltage or temperature variations; and process variations are suppressed. When process variations appear, there are not be too many errors generated. Therefore, a timebase clock is provided with high accuracy, wide operating voltage range, wide operating temperature range, and low power consumption operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.