Rc-Oszillator mit Kompensation des Komparatorversatzes
Anmelder: NXP USA, Inc. 🇺🇸
Details
- Veröffentlichungs-Nr.
- EP3605843
- Aktenzeichen
- EP19186922
- Anmeldetag
- 18. Juli 2019
- Veröffentlichung
- 26. Mai 2021
- Erteilung
- 26. Mai 2021
- Rechtsraum
- EP
- IPC
- H03K3/0231
Abstract
A comparator-based oscillator generates an output frequency that is relatively independent of comparator offset voltages. Charging/discharging circuitry controls the comparator input voltage, and logic circuitry generates the oscillator output (e.g., clock) signal and controls the charging/discharging circuitry. During an oscillator charging cycle, the charging/discharging circuitry drives the voltage at the comparator input node from a relatively low initial charging voltage level up to the comparator reference voltage. During an oscillator discharging cycle, the charging/discharging circuitry drives the voltage at the comparator input node from a relatively high initial discharging voltage level down to the comparator reference voltage. The initial charging and discharging voltage levels depend on the comparator reference voltage, such that a comparator offset voltage directly affects the initial charging and discharging voltage levels, thereby keeping the output frequency relatively unchanged.
Anmelder
- Firma
- NXP USA, Inc.
- Land
- 🇺🇸 USA
US-amerikanische Gesellschaft des Halbleiterkonzerns NXP, die Chips und Halbleiterlösungen für Automobiltechnik, Kommunikation und Industrieelektronik entwickelt.
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