Patent ID: 11961542
Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 9:
10. A method for operating a data storage device comprising:
biasing a first resistance of a resistive temperature detector (RTD) of a slider with a voltage bias, wherein the first resistance is electrically coupled to a first amplifier circuit on a low frequency (LF) path and a second amplifier circuit on a high frequency (HF) path;
adding a bias pulse on the HF path to generate a HF resistance detection signal, wherein the second amplifier circuit is biased using the voltage bias and the bias pulse;
chopping, on the LF path, a LF signal at the first amplifier circuit at a first clock frequency; and
demodulating the chopped LF signal on the LF path using the first clock frequency to generate a LF resistance detection signal.