Patent ID: 11892865
Assignee: EXCELIO TECHNOLOGY (SHENZHEN) CO., LTD.
Field: Control (Instruments)
Classification: CPC G  H | IPC G  H

Claim 1:
2. The mixed signal control circuit for eliminating the degenerate metastable state of the bandgap reference circuit according to claim 1, wherein: an output terminal of the digital-to-analog conversion module is outputted to a common-mode point of the self-biased bandgap reference temperature compensation loop circuit through the delay switch unit, and is configured to perform a voltage clamping operation on the common-mode voltage point through a preset analog voltage value during the start-up process, wherein relying on output driving capability of the digital-to-analog conversion module, a current bias of the differential amplifier and a bias current of an error correction loop are forced to be correctly established, such that the bandgap reference voltage module enters the correct DC operating point, thereby eliminating the possibility of the bandgap reference circuit entering the degenerate metastable state.