Tessolve Post Silicon Validation Engineer Interview Questions and Answers

Q1. Related to the op amp circuit outputs
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Q2. Flip flops related basic questions
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Q1. Digital circuits basics
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Q2. Analog circuit op amp and diode basics
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First round is Online technical assignment.

Q1. Through team call they will take your interview.
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Q2. Your final year project, any work experience, analog, digital, basic circuit switch(like bjt,MOSFET,diode,inductor, capacitor) knowledge and problem.
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Q1. Same thing but higher authority will take your interview.
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Q1. About salary discussion.
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Q1. Showed some circuits and asked the expected results
Ans. 
Analyzing circuit behavior to predict expected results based on given inputs and configurations.
• Identify the type of circuit (e.g., combinational, sequential) to determine its behavior.

• For combinational circuits, use truth tables to map inputs to outputs.

• For sequential circuits, consider the state transitions and memory elements involved.

• Example: In a simple AND gate, if both inputs are high, the output is high; otherw...read more
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Q2. Design XOR gate using normal gate
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An XOR gate can be constructed using AND, OR, and NOT gates to achieve the desired output.
• XOR outputs true only when inputs differ: A=0, B=1 -> Output=1; A=1, B=0 -> Output=1.

• Use two AND gates, one OR gate, and two NOT gates to create the XOR function.

• The expression for XOR is: A XOR B = (A AND NOT B) OR (NOT A AND B).

• Example: For inputs A=1, B=0, NOT B=1, NOT A=0; thus, (1 AND 1) OR (0 AND 0) = 1.
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Q1. Characteristics of diod, Amplifier,RLC circuits, Digital an Analog electronics from basics to advanced level questions
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Q2. What is op amp and it's applications
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Op amp stands for operational amplifier, used in various electronic circuits for amplification, filtering, signal conditioning, etc.
• Op amp is a high-gain electronic voltage amplifier with differential inputs and single output.

• It is commonly used in audio amplifiers, signal conditioning circuits, filters, oscillators, etc.

• Op amps can be used in instrumentation amplifiers, voltage followers, integrators, differentiators,...read more
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Q3. Input Voltage is 50v,I want 20v at output design a circuit
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Design a voltage regulator circuit to convert 50V input to 20V output using a buck converter or linear regulator.
• Use a buck converter for efficient step-down conversion.

• Consider a linear voltage regulator like LM317 for lower power applications.

• Ensure the components can handle the input voltage and current requirements.

• Include filtering capacitors to stabilize the output voltage.

• Implement thermal management if using a ...read more
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Q4. Input fre is 50MHz and I want half of the frequency at output design the circuit
Ans. 
Use a flip-flop to divide the frequency by 2.
• Use a D flip-flop with the input connected to the clock signal and the output connected back to the D input.

• The output frequency will be half of the input frequency (25MHz).
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Q1. In detail explanation of every concept.
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