Producing reference voltage for e.g. mobile telephone, alternately charges capacitor from reference voltage source then uses capacitor voltage for reference

摘要

During an ON interval, a storage unit (53), e.g. a capacitor, is charged continuously from a reference voltage source (2). This reference voltage supply is interrupted, i.e. is OFF, for an interval. During this interval at least, the reference voltage is produced by the e.g. capacitor (53). An Independent claim is included for the corresponding reference voltage circuit.