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

Claim 0:
1. An oscillator arrangement comprising:
a relaxation oscillator having an active state and an inactive state;
a bias current circuit portion arranged to provide a bias current to the relaxation oscillator during said active state;
a reference circuit portion arranged to provide a reference voltage to the relaxation oscillator during said active state and
an electronic switch arranged to isolate said relaxation oscillator from the bias current circuit portion when in said inactive state;
wherein the oscillator arrangement is arranged to store an internal voltage value associated with said bias current and the bias current circuit portion is arranged to use the stored internal voltage value to generate the bias current when the oscillator is started up from the inactive state to the active state;
wherein the reference voltage circuit portion comprises a differential amplifier arranged to control said bias current circuit portion.