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You are using an instrumentation amplifier (IA) to record a bioelectric signal. Your subject is close to a fluorescent light that creates a displacement current of 5µA and your ground electrode has an impedance of 50KΩ. Assume the IA has very high input impedance and a differential gain of 10. Compute the 60Hz interference voltage amplitude measured at the output of the IA. Analyze three cases for CMRR: 50dB, 80 dB and 100 dB.
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| Question Text | You are using an instrumentation amplifier (IA) to record a bioelectric signal. Your subject is close to a fluorescent light that creates a displacement current of 5µA and your ground electrode has an impedance of 50KΩ. Assume the IA has very high input impedance and a differential gain of 10. Compute the 60Hz interference voltage amplitude measured at the output of the IA. Analyze three cases for CMRR: 50dB, 80 dB and 100 dB. |
| Topic | All topics |
| Subject | AP Physics 2 |
| Class | Grade 12 |
