| 摘要 |
A method for the self-testing of a reference voltage in electronic components includes a circuit arrangement for a self-test of the reference voltage that can be implemented in the form of an on-chip test, eg., for which no external reference voltage source is required. The reference voltage (U<SUB>ref</SUB>) is fed to a voltage-controlled oscillator whose output forms the input to a Wien-Robinson bridge whose output signal is checked in a phase detector for its phase shift relative to the input to the Wien-Robinson bridge to check the balance of the Wien-Robinson bridge. The Wien-Robinson bridge is set to be balanced at a frequency (OMEGA<SUB>ref.test</SUB>) that is generated in the oscillator at the nominal value<SUB>(Uref.tes) </SUB>selected for the reference voltage (U<SUB>ref</SUB>), and a pass signal is generated if the bridge is balanced and a fail signal is generated if it is not.
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