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Consider an inverting amplifier circuit designed using an op amp and two resistors, R1 = 10 kΩ and R2 = 1 MΩ. If the op amp is specified to have an input bias current of 100 nA and an input offset current of 10 nA, find the output dc offset voltage resulting.
- a)0.1 mV
- b)1 mV
- c)10 mV
- d)100 mV
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
Consider an inverting amplifier circuit designed using an op amp and t...
Use the mathematical definition of bias current and offset current.
Most Upvoted Answer
Consider an inverting amplifier circuit designed using an op amp and t...
Ω and R2= 100 kΩ. The voltage source Vin is 1 V.
To analyze this circuit, we can use the principle of virtual grounds. Since the op amp is an ideal device, it has infinite input impedance and zero output impedance. Therefore, the voltage at the inverting input (-) is equal to the voltage at the non-inverting input (+), which is zero in this case (since the non-inverting input is connected to ground).
Now, we can apply Ohm's law to find the current flowing through R1:
I1 = Vin / R1 = 1 V / 10 kΩ = 0.1 mA
Since the inverting input is at virtual ground, the same current must flow through R2. Therefore, we can use Ohm's law again to find the output voltage Vout:
Vout = -I1 * R2 = -0.1 mA * 100 kΩ = -10 V
Note that the negative sign indicates that the output voltage is inverted with respect to the input voltage. This means that if the input voltage increases, the output voltage will decrease by the same amount (since it is inverted).
In summary, the inverting amplifier circuit with R1= 10 kΩ and R2= 100 kΩ and a 1 V input voltage results in a -10 V output voltage.
To analyze this circuit, we can use the principle of virtual grounds. Since the op amp is an ideal device, it has infinite input impedance and zero output impedance. Therefore, the voltage at the inverting input (-) is equal to the voltage at the non-inverting input (+), which is zero in this case (since the non-inverting input is connected to ground).
Now, we can apply Ohm's law to find the current flowing through R1:
I1 = Vin / R1 = 1 V / 10 kΩ = 0.1 mA
Since the inverting input is at virtual ground, the same current must flow through R2. Therefore, we can use Ohm's law again to find the output voltage Vout:
Vout = -I1 * R2 = -0.1 mA * 100 kΩ = -10 V
Note that the negative sign indicates that the output voltage is inverted with respect to the input voltage. This means that if the input voltage increases, the output voltage will decrease by the same amount (since it is inverted).
In summary, the inverting amplifier circuit with R1= 10 kΩ and R2= 100 kΩ and a 1 V input voltage results in a -10 V output voltage.
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Consider an inverting amplifier circuit designed using an op amp and t...
Vo offset due to bias current(I bias)= I bias x Rf= 100n x10^6
Vo offset due to input offset current = I (input offset current(Iio)) x Rf(feedback resistor)= 10n x 10^6
total offset voltage = Ibias Rf + Iio Rf = 110 mA
Vo offset due to input offset current = I (input offset current(Iio)) x Rf(feedback resistor)= 10n x 10^6
total offset voltage = Ibias Rf + Iio Rf = 110 mA
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Consider an inverting amplifier circuit designed using an op amp and two resistors, R1= 10 kΩ and R2= 1 MΩ. If the op amp is specified to have an input bias current of 100 nA and an input offset current of 10 nA, find the output dc offset voltage resulting.a)0.1 mVb)1 mVc)10 mVd)100 mVCorrect answer is option 'D'. Can you explain this answer?
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Consider an inverting amplifier circuit designed using an op amp and two resistors, R1= 10 kΩ and R2= 1 MΩ. If the op amp is specified to have an input bias current of 100 nA and an input offset current of 10 nA, find the output dc offset voltage resulting.a)0.1 mVb)1 mVc)10 mVd)100 mVCorrect answer is option 'D'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about Consider an inverting amplifier circuit designed using an op amp and two resistors, R1= 10 kΩ and R2= 1 MΩ. If the op amp is specified to have an input bias current of 100 nA and an input offset current of 10 nA, find the output dc offset voltage resulting.a)0.1 mVb)1 mVc)10 mVd)100 mVCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider an inverting amplifier circuit designed using an op amp and two resistors, R1= 10 kΩ and R2= 1 MΩ. If the op amp is specified to have an input bias current of 100 nA and an input offset current of 10 nA, find the output dc offset voltage resulting.a)0.1 mVb)1 mVc)10 mVd)100 mVCorrect answer is option 'D'. Can you explain this answer?.
Consider an inverting amplifier circuit designed using an op amp and two resistors, R1= 10 kΩ and R2= 1 MΩ. If the op amp is specified to have an input bias current of 100 nA and an input offset current of 10 nA, find the output dc offset voltage resulting.a)0.1 mVb)1 mVc)10 mVd)100 mVCorrect answer is option 'D'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about Consider an inverting amplifier circuit designed using an op amp and two resistors, R1= 10 kΩ and R2= 1 MΩ. If the op amp is specified to have an input bias current of 100 nA and an input offset current of 10 nA, find the output dc offset voltage resulting.a)0.1 mVb)1 mVc)10 mVd)100 mVCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider an inverting amplifier circuit designed using an op amp and two resistors, R1= 10 kΩ and R2= 1 MΩ. If the op amp is specified to have an input bias current of 100 nA and an input offset current of 10 nA, find the output dc offset voltage resulting.a)0.1 mVb)1 mVc)10 mVd)100 mVCorrect answer is option 'D'. Can you explain this answer?.
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