Patent ID: 11959962
Assignee: QUALCOMM INCORPORATED
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G

Claim 9:
10. The IC package of claim 9, wherein the resistance detector is configured to:
close the first switch at a beginning of a first period to provide the first current to the pin;
open the first switch at an end of the first period;
sample a first voltage of the pin during the first period and hold the sampled first voltage at the end of the first period, with the first sample-and-hold circuit;
close the second switch at a beginning of a second period to provide the second current to the pin;
open the second switch at an end of the second period;
sample a second voltage of the pin during the second period and hold the sampled second voltage at the end of the second period, with the second sample-and-hold circuit;
amplify a voltage difference between the held first voltage and the held second voltage with the amplifier;
quantize the amplified voltage difference with the ADC; and
determine the resistance of a resistive element in the lumped parameter model based on a value of the first current, a value of the second current, and the quantized voltage difference.