Analog Design Engineer Interview Questions and Answers for Freshers

Adding a capacitor in parallel to a resistor changes the frequency response of the circuit.

• The cutoff frequency of the circuit decreases as the capacitance increases.

• The circuit becomes a high-pass filter with a -20dB/decade slope above the cutoff frequency.

• The impedance of the capacitor decreases as frequency increases, allowing more current to flow through the circuit.

• The resistor and capacitor form a voltage divider, affecting the gain of the circuit at different frequenci...read more

Adding a resistor to a capacitor changes the frequency response of the circuit.

• The cutoff frequency of the circuit decreases with increasing resistance.

• The circuit becomes more attenuative at higher frequencies.

• The time constant of the circuit increases with increasing resistance.

• The circuit becomes more stable and less prone to oscillation.

• Example: A low-pass filter with a 10uF capacitor and a 1kohm resistor has a cutoff frequency of 15.9Hz.