An op-amp output rises by 8 V over a 12 µs period. What is its slew rate_______________?
Show answer Hide answer
Answer: B. 0.67 V/µs
Explanation
Slew rate measures the maximum rate at which an operational amplifier output voltage can change. Dividing the voltage change of eight volts by the time interval of twelve microseconds yields the result. Performing this division calculation gives a slew rate of approximately zero point sixty seven volts per microsecond. Slew rate is typically expressed in units of volts per microsecond in datasheet specifications. Internal compensation capacitors limit how fast internal circuitry can charge and discharge nodes. Exceeding the maximum slew rate causes severe distortion in high frequency output waveforms.
Engineers must check slew rate specifications when designing high speed pulse or square wave generators. Audio amplifiers require adequate slew rate to reproduce rapid transient musical peaks without distortion. Slow slew rates can turn high frequency square waves into undesirable triangular waveforms. Option A represents an incorrect calculation magnitude far exceeding the actual arithmetic result. Option C is a rounded approximation that does not match the precise mathematical division outcome. Option D is incorrect because option B provides the exact calculated numerical answer.
- Subject
- Engineering
- Category
- Electrical Engineering
- Topic
- —
- Difficulty
- medium
Related questions
Q1. What conditions define differential-mode operation ______________?
Show answer Hide answer
Answer: A. opposite polarity signals are applied to the inputs
Differential mode operation requires applying input signals that have equal magnitudes but opposite polarities. Opposite polarity inputs maximize the voltage difference amplified by the differential circuit stage. This o...
Q2. How does an electronic oscillator differ fundamentally from an amplifier_____________?
Show answer Hide answer
Answer: B. Requires no input signal
An electronic oscillator generates its own periodic output signal without requiring any external input signal. Amplifiers require an input signal to produce an output, whereas oscillators supply their own input via feedb...
Q3. What circuit topology is typically used for the input stage of an operational amplifier________________?
Show answer Hide answer
Answer: A. differential amplifier
Operational amplifier input stages are universally built using differential amplifier topologies for balanced performance. Differential pairs provide high input impedance and excellent rejection of unwanted common mode n...
Q4. What kind of signal output does an oscillator generate___________?
Show answer Hide answer
Answer: B. Undamped
An electronic oscillator is designed to produce continuous alternating current output signals without external input triggers. Undamped signals maintain a constant peak amplitude indefinitely over continuous operating ti...
Q5. With both inputs grounded, what is the ideal output voltage of an operational amplifier _______________?
Show answer Hide answer
Answer: C. equal to zero
An operational amplifier amplifies the voltage difference between its inverting and noninverting input terminals. When both inputs are connected to ground, the input voltage difference is zero volts. Multiplying a zero i...
Q6. What must the initial loop gain be around the feedback path for an oscillator to successfully start_________?
Show answer Hide answer
Answer: B. Greater than 1
Oscillators require an initial loop gain greater than one to ensure spontaneous signal startup from noise. Starting from microscopic thermal noise demands a gain boost to build up usable oscillation amplitudes. Once stea...