Debugging Methodology — question 6 of 10
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You have a signal chain: a sensor feeds an instrumentation amplifier, which feeds a low-pass filter, which feeds an ADC. The ADC reads a constant value no matter what the sensor is actually doing. Walk me through how you'd trace this signal chain from source to sink to find where it stops being correct, including what you'd check at each stage, and what a reading 'stuck at a supply rail' versus 'stuck at zero' would tell you differently.