Signalchip Innovations Analog Design Engineer Interview Questions and Answers for Freshers

Q1. Tell me about yourself
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Q2. Questions based on experience and projects
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Q1. About LNA, VCO and LDO projects
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Q2. Basics of Fourier transform
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Q3. Basic analog circuit questions
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90 minutes with 20 questions of Analog and Aptitude each. Topics are Basic Network Theory, Diode, Op-amps, etc. Topics may vary place-to-place.

Q1. Questions are cumulative: Draw a Lowpass filter (RC)
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Q2. Add capacitor parallel to one resistor and tell frequency response
Ans. 
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...read more
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Q3. Add resistor to the capacitor and tell frequency response
Ans. 
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 cut
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Q4. T-flip flop mod3 counters and reset
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Q5. A tricky diode based network question with both cases(ideal and non-ideal diode)
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Q6. Aptitude question of 1000 bottles and one poisoned
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Q1. Draw micro arch for given problem
Ans. 
Design a micro arch for a given problem
• Identify the specific problem that the micro arch needs to solve

• Consider the size and scale of the micro arch in relation to the problem

• Design the structure of the micro arch to efficiently address the problem

• Ensure that the materials used are suitable for the intended purpose
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Q2. Write verilog for the micro arch
Ans. 
Verilog code for micro architecture design
• Define modules for different components of the micro architecture

• Implement data paths and control logic using Verilog

• Use registers, multiplexers, and other logic gates to design the micro architecture

• Test the functionality of the micro architecture using simulation tools
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Q1. General problem solving approach
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Q1. Basic technical qns from analog and few digital
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Q2. Qns about mosfets, ce cb config, some c questions
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Q1. Projects based qns, basic analog qns, and few digital ones.
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Easy if you managae time well otherwise time will be not sufficient

Q1. Introduction about myself
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Q2. Technical questions on basics
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The test was easy to moderate and with more questions on passages

Q1. Series combination of resistor
Ans. 
In a series combination of resistors, the total resistance is the sum of individual resistances.
• Total resistance is calculated by adding the individual resistances in the series.

• Current remains the same throughout the series combination.

• Voltage is divided among the resistors based on their individual resistances.
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Q2. Equipotential nodes
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90 minutes with 20 questions of Analog and Aptitude each. Topics are Basic Network Theory, Diode, Op-amps, etc. Topics may vary place-to-place.

Q1. Questions are cumulative: Draw a Lowpass filter (RC)
Add your answer
Q2. Add capacitor parallel to one resistor and tell frequency response
Ans. 
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...read more
Answered by AI
Add your answer
Q3. Add resistor to the capacitor and tell frequency response
Ans. 
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 cut
Answered by AI
Add your answer
Q4. T-flip flop mod3 counters and reset
Add your answer
Q5. A tricky diode based network question with both cases(ideal and non-ideal diode)
Add your answer
Q6. Aptitude question of 1000 bottles and one poisoned
Add your answer