Patent ID: 11870448
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. The PLL of claim 1, wherein the error amplifier is a first error amplifier, and the PLL is further comprising:
a voltage input terminal;
a second error amplifier having third and fourth amplifier inputs and a second amplifier output;
a constant voltage source having a constant voltage output coupled to the third amplifier input; and
a first transistor having a first control terminal and first and second current terminals, wherein the first current terminal is coupled to the fourth amplifier input, and the second current terminal is coupled to a ground terminal;
wherein the resistive element is a second transistor having a second control terminal, in which the second control terminal is coupled to the first control terminal and to the second amplifier output.