The tail current in a differential amplifier equals .
The tail current in a differential amplifier equals .
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
The differential gain is
The differential gain is
Current cannot flow to ground through .
Current cannot flow to ground through .
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 two input terminals of an opamp are labeled as
The two input terminals of an opamp are labeled as
Differential amplifiers are used in
Differential amplifiers are used in
In the above circuit the current ix is
In the above circuit the current ix is
The tail current of a differential amplifier is .
The tail current of a differential amplifier is .
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
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
Negative feedback ___________
Negative feedback ___________
The input stage of an OP-amp is usually a ___________
The input stage of an OP-amp is usually a ___________
When a differential amplifier is operated single-ended, ___________
When a differential amplifier is operated single-ended, ___________
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 .
The output voltage Vo of the above circuit is
The output voltage Vo of the above circuit is
A voltage follower ___________
A voltage follower ___________
The common mode gain is ___________
The common mode gain is ___________
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
The input impedance of a differential amplifier equals r'e times
The input impedance of a differential amplifier equals r'e times
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 ___________
The OP-amp can amplify
The OP-amp can amplify
The common mode voltage gain is
The common mode voltage gain is
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
An ideal OP-amp is an ideal
An ideal OP-amp is an ideal
A common mode signal is applied to ___________
A common mode signal is applied to ___________
For an OP-amp with negative feedback, the output is .
For an OP-amp with negative feedback, the output is .
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
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 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
The ideal OP-amp has the following characteristics.
The ideal OP-amp has the following characteristics.
In the common mode, ___________
In the common mode, ___________
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
In differential-mode, ___________
In differential-mode, ___________
The use of negative feedback
The use of negative feedback
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 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
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 input offset current equals the ___________
The input offset current equals the ___________
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?
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 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 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
The closed-loop voltage gain of an inverting amplifier equal to
The closed-loop voltage gain of an inverting amplifier equal to
A differential amplifier ___________
A differential amplifier ___________
For an ideal OP-amp, which of the following is true?
For an ideal OP-amp, which of the following is true?
OP-amp circuits may be cascaded without changing their input output relationships
OP-amp circuits may be cascaded without changing their input output relationships
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 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
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 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
How many OP-amps are required to implement this equation
How many OP-amps are required to implement this equation
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
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.]
Hysteresis is desirable in Schmitt-trigger, because
Hysteresis is desirable in Schmitt-trigger, because
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
