Signalchip Innovations Analog Design Engineer Interview Questions and Answers

Talk about your last experience in the company

Q1. What is your weakness?
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I tend to be overly critical of my own work, which can sometimes slow down my progress.
• I have a tendency to overanalyze my work, leading to delays in completion

• I am constantly striving for perfection, which can be both a strength and a weakness

• I am working on finding a balance between striving for excellence and being overly critical
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Q2. Why STMicroelectronics
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STMicroelectronics is a leading global semiconductor company known for its innovative analog design solutions.
• STMicroelectronics has a strong reputation for producing high-quality analog products.

• The company offers a wide range of analog ICs for various applications such as power management, signal conditioning, and data conversion.

• STMicroelectronics has a history of successful collaborations with industry leaders in v...read more
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Q1. Op amps , negative and positive feedback
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Q2. Timing circuits and digital circuits
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Q1. RC Circuit Question
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Q2. Op-Amp Question
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Q1. Transistor level circuit question
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Basic questions of aptitude

Q1. Basic questions of circuit theory and analog
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Q2. Bode plot questions
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Q3. Rc network with constant current source
Ans. 
An RC network with a constant current source is used to create a voltage output that is proportional to the input current.
• RC network consists of a resistor (R) and a capacitor (C) connected in series or parallel.

• Constant current source ensures a steady current flows through the network.

• The voltage output across the RC network is determined by the time constant (RC) and the input current.

• This configuration is commonly u
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It was very nicee, time was very less

Q1. Basic diode, op amp circuits, ADC, DAC
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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
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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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