If ground is applied to the (+) terminal of an inverting OP-amp, the (–) terminal will
If ground is applied to the (+) terminal of an inverting OP-amp, the (–) terminal will
An opamp has a slew rate of 5V/ S. the largest sine wave o/p voltage possible at a frequency of 1MHz is
An opamp has a slew rate of 5V/ S. the largest sine wave o/p voltage possible at a frequency of 1MHz is
Of the values listed, the most realistic value for open-loop voltage gain of an OP-amp is
Of the values listed, the most realistic value for open-loop voltage gain of an OP-amp is
The node voltage at the top of the til resistor is closes to ___________
The node voltage at the top of the til resistor is closes to ___________
In the above circuit the current ix is
In the above circuit the current ix is
The ideal OP-amp has the following characteristics.
The ideal OP-amp has the following characteristics.
An amplifier using an opamp with slew rate SR=1v/sec has a gain of 40db.If this amplifier has to faithfully amplify sinusoidal signals from dc to 20KHz without introducing any slew-rate induced distortion, then the input signal level exceed
An amplifier using an opamp with slew rate SR=1v/sec has a gain of 40db.If this amplifier has to faithfully amplify sinusoidal signals from dc to 20KHz without introducing any slew-rate induced distortion, then the input signal level exceed
In the differential voltage gain & the common mode voltage gain of a differential amplifier are 48db & 2db respectively, then its common mode rejection ratio is
In the differential voltage gain & the common mode voltage gain of a differential amplifier are 48db & 2db respectively, then its common mode rejection ratio is
An OPAMP has a slew rate of 5 V/μ S .The largest sine wave O/P voltage possible at a frequency of 1 MHZ is
[Hint: Slew rate is defined as the max. rate of change of output voltage. Its unit is V/μS.]
An OPAMP has a slew rate of 5 V/μ S .The largest sine wave O/P voltage possible at a frequency of 1 MHZ is
[Hint: Slew rate is defined as the max. rate of change of output voltage. Its unit is V/μS.]
The OP-amp can amplify
The OP-amp can amplify
When a differential amplifier is operated single-ended, ___________
When a differential amplifier is operated single-ended, ___________
A differential amplifier ___________
A differential amplifier ___________
A certain noninverting amplifier has Ri of 1 kΩ and Rf of 100 kΩ. The closed-loop voltage gain is
A certain noninverting amplifier has Ri of 1 kΩ and Rf of 100 kΩ. The closed-loop voltage gain is
When a number of stages are connected in parallel, the overall gain is the product of the individual stage gains
When a number of stages are connected in parallel, the overall gain is the product of the individual stage gains
A common mode signal is applied to ___________
A common mode signal is applied to ___________
Hysteresis is desirable in Schmitt-trigger, because
Hysteresis is desirable in Schmitt-trigger, because
The tail current in a differential amplifier equals .
The tail current in a differential amplifier equals .
The tail current of a differential amplifier is .
The tail current of a differential amplifier is .
The closed-loop voltage gain of an inverting amplifier equal to
The closed-loop voltage gain of an inverting amplifier equal to
Differential amplifiers are used in
Differential amplifiers are used in
A certain OP-amp has bias currents of 50 µA. The input offset current is
A certain OP-amp has bias currents of 50 µA. The input offset current is
The common mode voltage gain is
The common mode voltage gain is
Negative feedback ___________
Negative feedback ___________
Which of the following amplifier is used in a digital to analog converter?
Which of the following amplifier is used in a digital to analog converter?
A differential amplifier is invariably used in the i/p stage of all OP-amps. This is done basically to provide the OP-amps with a very high
A differential amplifier is invariably used in the i/p stage of all OP-amps. This is done basically to provide the OP-amps with a very high
The output of a particular OP-amp increases 8V in 12µs. The slew rate is
The output of a particular OP-amp increases 8V in 12µs. The slew rate is
How many OP-amps are required to implement this equation Vo = V1
How many OP-amps are required to implement this equation Vo = V1
The differential voltage gain of a differential amplifier is equal to RC divided by .
The differential voltage gain of a differential amplifier is equal to RC divided by .
In differential-mode, ___________
In differential-mode, ___________
The two input terminals of an opamp are labeled as
The two input terminals of an opamp are labeled as
The input stage of an OP-amp is usually a ___________
The input stage of an OP-amp is usually a ___________
For an ideal OP-amp, which of the following is true?
For an ideal OP-amp, which of the following is true?
The common mode gain is ___________
The common mode gain is ___________
OP-amp circuits may be cascaded without changing their input output relationships
OP-amp circuits may be cascaded without changing their input output relationships
Calculate the cutoff frequency of a first-order low-pass filter for R1 = 2.5kΩ and C1 = 0.05μF
Calculate the cutoff frequency of a first-order low-pass filter for R1 = 2.5kΩ and C1 = 0.05μF
For an OP-amp with negative feedback, the output is .
For an OP-amp with negative feedback, the output is .
The output voltage Vo of the above circuit is
The output voltage Vo of the above circuit is
A 741-Type OP-amp has a gain-bandwith product of 1MHz. A non-inverting amplifier using this opamp & having a voltage gain of 20db will exhibit -3db bandwidth of
A 741-Type OP-amp has a gain-bandwith product of 1MHz. A non-inverting amplifier using this opamp & having a voltage gain of 20db will exhibit -3db bandwidth of
The common mode voltage gain of a differential amplifier is equal to RC divided by
The common mode voltage gain of a differential amplifier is equal to RC divided by
Assume that the OP-amp of the fig. is ideal. If Vi is a triangular wave, then V0 will be
Assume that the OP-amp of the fig. is ideal. If Vi is a triangular wave, then V0 will be
When a step-input is given to an OP-amp integrator, the output will be
When a step-input is given to an OP-amp integrator, the output will be
A non inverting closed loop op amp circuit generally has a gain factor
A non inverting closed loop op amp circuit generally has a gain factor
The use of negative feedback
The use of negative feedback
In the common mode, ___________
In the common mode, ___________
The input offset current equals the ___________
The input offset current equals the ___________
Current cannot flow to ground through .
Current cannot flow to ground through .
The approximate input impedance of the opamp circuit which has Ri=10k, Rf=100k, RL=10k
The approximate input impedance of the opamp circuit which has Ri=10k, Rf=100k, RL=10k
The differential gain is
The differential gain is
A voltage follower ___________
A voltage follower ___________
For an OP-amp having differential gain Av and common mode gain Ac the CMRR is given by
For an OP-amp having differential gain Av and common mode gain Ac the CMRR is given by
A certain inverting amplifier has a closed-loop voltage gain of 25. The OP-amp has an open-loop voltage gain of 100,000. If an OP-amp with an open-loop voltage gain of 200,000 is substituted in the arrangement, the closed-loop gain
A certain inverting amplifier has a closed-loop voltage gain of 25. The OP-amp has an open-loop voltage gain of 100,000. If an OP-amp with an open-loop voltage gain of 200,000 is substituted in the arrangement, the closed-loop gain
An ideal OP-amp is an ideal
An ideal OP-amp is an ideal
The input impedance of a differential amplifier equals r'e times
The input impedance of a differential amplifier equals r'e times
How many OP-amps are required to implement this equation
How many OP-amps are required to implement this equation
A differential amplifier has a differential gain of 20,000. CMRR=80dB. The common mode gain is given by
A differential amplifier has a differential gain of 20,000. CMRR=80dB. The common mode gain is given by
With zero volts on both inputs, an OP-amp ideally should have an output ___________
With zero volts on both inputs, an OP-amp ideally should have an output ___________
