Patent ID: 11860238
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Control (Instruments)
Classification: CPC G | IPC G

Claim 10:
11. A semiconductor device for parameter power supply rejection ratio (PSRR) measurement, comprising:
a function unit, having at least one function block and a parameter PSRR measurement block, the parameter PSRR measurement block comprising a filter, a first regulator and a second regulator, the filter for receiving an AC input signal and a DC input signal, and for outputting a combined output signal according to the AC input signal and the DC input signal; the first regulator coupled to the filter, and for receiving the combined output signal, and for outputting a first output signal having a first AC component signal and a first DC component signal, the first output signal being associated with the combined output signal; the second regulator coupled to the first regulator, and for receiving the first output signal, and for outputting a second output signal having a second AC component signal and a second DC component signal, the second output signal being associated with the first output signal, wherein the parameter PSRR of the second regulator is configured to be obtained according to a ratio between the second AC component signal and the first AC component signal; and
a digital control unit, coupled to the function unit, for selecting at least one function block or the parameter PSRR measurement block.