Patent ID: 11923805
Assignee: NORDIC SEMICONDUCTOR ASA
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A method of operating an oscillator arrangement comprising a relaxation oscillator having an active state and an inactive state, a bias current circuit portion, a reference circuit portion comprising a differential amplifier, and an electronic switch, said method comprising:
providing a bias current with the bias current circuit portion to the relaxation oscillator during said active state;
providing a reference voltage to the relaxation oscillator with the reference circuit portion during said active state;
changing the oscillator to said inactive state;
isolating the relaxation oscillator from the bias current circuit portion using the electronic switch;
storing an internal voltage value associated with said bias current;
using the stored internal voltage value to generate the bias current when the oscillator is started up from the inactive state to the active state; and
controlling the bias current circuit portion with the differential amplifier.