Analog & Digital Electronics interview questions

1. A.sustained oscillation requires a loop gain magnitude of exactly one and a total phase shift of 0° or 360° around the loop
2. B.reverse-biased diode operated in breakdown to hold a constant voltage, used as a shunt regulator and voltage reference
3. C.data must be stable for the setup time before and the hold time after the active clock edge, or the flip-flop may go metastable
4. D.ratio of differential gain to common-mode gain of a differential amplifier, expressed in dB, higher meaning better rejection of common noise

Answer + AI explanation with Pro

1. A.Setup and hold time
2. B.Zener diode
3. C.Slew rate
4. D.Schmitt trigger

Answer + AI explanation with Pro

1. A.Zener diode — maximum rate of change of op-amp output voltage in V/µs, limiting undistorted output at high frequency and large amplitude
2. B.Zener diode — reverse-biased diode operated in breakdown to hold a constant voltage, used as a shunt regulator and voltage reference
3. C.Zener diode — with negative feedback an op-amp holds its two input terminals at the same potential because the open-loop gain is very high
4. D.Zener diode — sustained oscillation requires a loop gain magnitude of exactly one and a total phase shift of 0° or 360° around the loop

Answer + AI explanation with Pro

1. A.ratio of differential gain to common-mode gain of a differential amplifier, expressed in dB, higher meaning better rejection of common noise
2. B.with negative feedback an op-amp holds its two input terminals at the same potential because the open-loop gain is very high
3. C.reverse-biased diode operated in breakdown to hold a constant voltage, used as a shunt regulator and voltage reference
4. D.maximum rate of change of op-amp output voltage in V/µs, limiting undistorted output at high frequency and large amplitude

Answer + AI explanation with Pro

1. A.CMRR
2. B.Slew rate
3. C.Zener diode
4. D.Virtual short

Answer + AI explanation with Pro

1. A.Virtual short — comparator with positive feedback giving two switching thresholds (hysteresis) so that noisy inputs produce clean transitions
2. B.Virtual short — ratio of differential gain to common-mode gain of a differential amplifier, expressed in dB, higher meaning better rejection of common noise
3. C.Virtual short — grid of minterms in Gray-code order where adjacent 1s are grouped in powers of two to obtain a minimal sum-of-products expression
4. D.Virtual short — with negative feedback an op-amp holds its two input terminals at the same potential because the open-loop gain is very high

Answer + AI explanation with Pro

1. A.with negative feedback an op-amp holds its two input terminals at the same potential because the open-loop gain is very high
2. B.sustained oscillation requires a loop gain magnitude of exactly one and a total phase shift of 0° or 360° around the loop
3. C.grid of minterms in Gray-code order where adjacent 1s are grouped in powers of two to obtain a minimal sum-of-products expression
4. D.reverse-biased diode operated in breakdown to hold a constant voltage, used as a shunt regulator and voltage reference

Answer + AI explanation with Pro

1. A.Race-around condition
2. B.Virtual short
3. C.Setup and hold time
4. D.Barkhausen criterion

Answer + AI explanation with Pro

1. A.Barkhausen criterion — data must be stable for the setup time before and the hold time after the active clock edge, or the flip-flop may go metastable
2. B.Barkhausen criterion — J-K latch toggling repeatedly while the clock stays high when J = K = 1, solved by master-slave or edge-triggered design
3. C.Barkhausen criterion — grid of minterms in Gray-code order where adjacent 1s are grouped in powers of two to obtain a minimal sum-of-products expression
4. D.Barkhausen criterion — sustained oscillation requires a loop gain magnitude of exactly one and a total phase shift of 0° or 360° around the loop

Answer + AI explanation with Pro

1. A.grid of minterms in Gray-code order where adjacent 1s are grouped in powers of two to obtain a minimal sum-of-products expression
2. B.data must be stable for the setup time before and the hold time after the active clock edge, or the flip-flop may go metastable
3. C.with negative feedback an op-amp holds its two input terminals at the same potential because the open-loop gain is very high
4. D.ratio of differential gain to common-mode gain of a differential amplifier, expressed in dB, higher meaning better rejection of common noise

Answer + AI explanation with Pro

1. A.Schmitt trigger
2. B.Setup and hold time
3. C.CMRR
4. D.Barkhausen criterion

Answer + AI explanation with Pro

1. A.CMRR — reverse-biased diode operated in breakdown to hold a constant voltage, used as a shunt regulator and voltage reference
2. B.CMRR — J-K latch toggling repeatedly while the clock stays high when J = K = 1, solved by master-slave or edge-triggered design
3. C.CMRR — maximum rate of change of op-amp output voltage in V/µs, limiting undistorted output at high frequency and large amplitude
4. D.CMRR — ratio of differential gain to common-mode gain of a differential amplifier, expressed in dB, higher meaning better rejection of common noise

Answer + AI explanation with Pro

1. A.reverse-biased diode operated in breakdown to hold a constant voltage, used as a shunt regulator and voltage reference
2. B.maximum rate of change of op-amp output voltage in V/µs, limiting undistorted output at high frequency and large amplitude
3. C.ratio of differential gain to common-mode gain of a differential amplifier, expressed in dB, higher meaning better rejection of common noise
4. D.grid of minterms in Gray-code order where adjacent 1s are grouped in powers of two to obtain a minimal sum-of-products expression

Answer + AI explanation with Pro

1. A.CMRR
2. B.Slew rate
3. C.Barkhausen criterion
4. D.Virtual short

Answer + AI explanation with Pro

1. A.Slew rate — J-K latch toggling repeatedly while the clock stays high when J = K = 1, solved by master-slave or edge-triggered design
2. B.Slew rate — data must be stable for the setup time before and the hold time after the active clock edge, or the flip-flop may go metastable
3. C.Slew rate — ratio of differential gain to common-mode gain of a differential amplifier, expressed in dB, higher meaning better rejection of common noise
4. D.Slew rate — maximum rate of change of op-amp output voltage in V/µs, limiting undistorted output at high frequency and large amplitude

Answer + AI explanation with Pro

1. A.comparator with positive feedback giving two switching thresholds (hysteresis) so that noisy inputs produce clean transitions
2. B.grid of minterms in Gray-code order where adjacent 1s are grouped in powers of two to obtain a minimal sum-of-products expression
3. C.reverse-biased diode operated in breakdown to hold a constant voltage, used as a shunt regulator and voltage reference
4. D.sustained oscillation requires a loop gain magnitude of exactly one and a total phase shift of 0° or 360° around the loop

Answer + AI explanation with Pro

1. A.CMRR
2. B.Zener diode
3. C.Schmitt trigger
4. D.Karnaugh map

Answer + AI explanation with Pro

1. A.Schmitt trigger — maximum rate of change of op-amp output voltage in V/µs, limiting undistorted output at high frequency and large amplitude
2. B.Schmitt trigger — data must be stable for the setup time before and the hold time after the active clock edge, or the flip-flop may go metastable
3. C.Schmitt trigger — comparator with positive feedback giving two switching thresholds (hysteresis) so that noisy inputs produce clean transitions
4. D.Schmitt trigger — J-K latch toggling repeatedly while the clock stays high when J = K = 1, solved by master-slave or edge-triggered design

Answer + AI explanation with Pro

1. A.reverse-biased diode operated in breakdown to hold a constant voltage, used as a shunt regulator and voltage reference
2. B.J-K latch toggling repeatedly while the clock stays high when J = K = 1, solved by master-slave or edge-triggered design
3. C.sustained oscillation requires a loop gain magnitude of exactly one and a total phase shift of 0° or 360° around the loop
4. D.comparator with positive feedback giving two switching thresholds (hysteresis) so that noisy inputs produce clean transitions

Answer + AI explanation with Pro

1. A.CMRR
2. B.Race-around condition
3. C.Slew rate
4. D.Zener diode

Answer + AI explanation with Pro

1. A.Race-around condition — J-K latch toggling repeatedly while the clock stays high when J = K = 1, solved by master-slave or edge-triggered design
2. B.Race-around condition — with negative feedback an op-amp holds its two input terminals at the same potential because the open-loop gain is very high
3. C.Race-around condition — reverse-biased diode operated in breakdown to hold a constant voltage, used as a shunt regulator and voltage reference
4. D.Race-around condition — ratio of differential gain to common-mode gain of a differential amplifier, expressed in dB, higher meaning better rejection of common noise

Answer + AI explanation with Pro

1. A.ratio of differential gain to common-mode gain of a differential amplifier, expressed in dB, higher meaning better rejection of common noise
2. B.sustained oscillation requires a loop gain magnitude of exactly one and a total phase shift of 0° or 360° around the loop
3. C.reverse-biased diode operated in breakdown to hold a constant voltage, used as a shunt regulator and voltage reference
4. D.data must be stable for the setup time before and the hold time after the active clock edge, or the flip-flop may go metastable

Answer + AI explanation with Pro

1. A.Virtual short
2. B.Race-around condition
3. C.Setup and hold time
4. D.Karnaugh map

Answer + AI explanation with Pro

1. A.Setup and hold time — data must be stable for the setup time before and the hold time after the active clock edge, or the flip-flop may go metastable
2. B.Setup and hold time — sustained oscillation requires a loop gain magnitude of exactly one and a total phase shift of 0° or 360° around the loop
3. C.Setup and hold time — comparator with positive feedback giving two switching thresholds (hysteresis) so that noisy inputs produce clean transitions
4. D.Setup and hold time — ratio of differential gain to common-mode gain of a differential amplifier, expressed in dB, higher meaning better rejection of common noise

Answer + AI explanation with Pro

1. A.reverse-biased diode operated in breakdown to hold a constant voltage, used as a shunt regulator and voltage reference
2. B.with negative feedback an op-amp holds its two input terminals at the same potential because the open-loop gain is very high
3. C.maximum rate of change of op-amp output voltage in V/µs, limiting undistorted output at high frequency and large amplitude
4. D.grid of minterms in Gray-code order where adjacent 1s are grouped in powers of two to obtain a minimal sum-of-products expression

Answer + AI explanation with Pro

1. A.Zener diode
2. B.Karnaugh map
3. C.Schmitt trigger
4. D.Race-around condition

Answer + AI explanation with Pro

1. A.Karnaugh map — maximum rate of change of op-amp output voltage in V/µs, limiting undistorted output at high frequency and large amplitude
2. B.Karnaugh map — grid of minterms in Gray-code order where adjacent 1s are grouped in powers of two to obtain a minimal sum-of-products expression
3. C.Karnaugh map — J-K latch toggling repeatedly while the clock stays high when J = K = 1, solved by master-slave or edge-triggered design
4. D.Karnaugh map — reverse-biased diode operated in breakdown to hold a constant voltage, used as a shunt regulator and voltage reference

Answer + AI explanation with Pro