Fast ADC for optical tape wobble signal

An analog-to-digital converter for digitizing an optical tape wobble signal, the analog-to-digital converter comprising:

• a feedback loop that receives the wobble signal having a wobble signal frequency, the feedback loop including:
• a comparator that receives the wobble signal through a first resistive component at a first comparator input and outputs a first output signal having a high voltage output value or a low voltage output value;
• a sampling component that samples the first output signal at a sampling frequency and outputs a second output signal, the sampling frequency being at least 50 times greater than the wobble signal frequency;
• and
• a first integrator component that receives the second output signal and outputs a third output signal, the third output signal being provided to the first comparator input through a second resistive component, wherein the third output signal tracks the wobble signal due to feedback action in the feedback loop;
• and
• a final discrete integrator component that integrates the second output signal to provide a digital representation of the wobble signal.