Patent ID: 11901865
Assignee: STMICROELECTRONICS INTERNATIONAL N.V.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. A device, comprising:
a crystal oscillator circuit having:
an output terminal;
a first current supply, the crystal oscillator circuit configured to receive a startup signal of a first polarity to a startup terminal for a first period of time;
a first current mirror having first and second current mirror transistors, the first current mirror transistor having a width to length ratio that is over one hundred times greater than a width to length ratio of the second current mirror transistor in the first current mirror, after the first period of time, the crystal oscillator circuit is configured to receive the startup signal with a reversed polarity from the first polarity;
a second current supply;
a second current mirror having third and fourth current mirror transistors, the second current supply coupled to the third current mirror transistor.