10 Questions
Operational amplifiers have zero offset voltage and zero bias current.
False
In the inverting amplifier circuit, the input signal comes into the positive (non-inverting) input of the op-amp.
False
Operational amplifiers have infinite common mode gain.
False
The output impedance of the inverting amplifier circuit is on the order of one ohm.
True
Operational amplifiers have a practical limitation where the magnitude of their output voltage cannot exceed the power supply voltage.
True
Signal conditioning is used to process the output signal from a sensor in a suitable form for the next stage of operation.
True
Analog-to-Digital Converter (ADC) is an example of signal conditioning.
True
Signal conditioning only involves amplifying the output signal from a sensor.
False
The primary role of signal conditioning is to provide internal excitation and grounding.
False
A piece of wire is an example of a signal conditioning module.
False
Study Notes
Ideal Operational Amplifier Characteristics
- Zero offset voltage
- Zero bias current
- Infinite common mode gain
Inverting Amplifier Circuit
- Input signal enters the positive (non-inverting) input of the op-amp
- Output impedance of the circuit is approximately 1 ohm
Practical Limitations of Operational Amplifiers
- Output voltage cannot exceed the power supply voltage
Signal Conditioning
- Processes the output signal from a sensor into a suitable form for the next stage of operation
- Examples include Analog-to-Digital Converters (ADCs)
- Involves more than just amplifying the output signal from a sensor
- Primary role includes providing internal excitation and grounding
- A piece of wire is not an example of a signal conditioning module
Test your knowledge of signal conditioning and A/D and D/A converters in the context of sensors and instrumentation. This quiz covers topics such as processing output signals from sensors, amplification, interference removal, and linearization.
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