Texas Instruments Interview Questions, Process, and Tips

60 mins test which comprises of 2 sections, Technical and aptitude. Both sections have a time limit of 30 mins. The technical questions were easy to medium and i could finish it in time but i needed more time for finishing the aptitude, a total 40 questions.

Q1. Tell me about yourself
Ans. 
I am a recent graduate with a degree in Computer Science and a passion for coding and problem-solving.
• Recent graduate with a degree in Computer Science

• Passionate about coding and problem-solving

• Experience with programming languages like Java, Python, and C++

• Completed internships at tech companies such as Google and Microsoft
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Q2. Find the voltage through the resistor
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To find the voltage through a resistor, use Ohm's Law: V = I * R
• Use Ohm's Law: V = I * R, where V is the voltage, I is the current flowing through the resistor, and R is the resistance of the resistor

• If the current flowing through the resistor is 2A and the resistance is 5 ohms, the voltage would be V = 2 * 5 = 10V

• Make sure to use the correct units for current (Amps) and resistance (Ohms) to get the voltage in Volts
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Q3. The interviewer just kept on adding an extra resistor in parallel and in series to the resistor and asked me to find the voltage
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Q4. He then asked a question on transient analysis ie 2 capacitors connected in series with a switch which closes at t>0 with the voltage across the 2 capacitors being 3 v and asked to find the total voltge
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Q5. Explain the working of a capacitor and resistor and relation between resistance and length , area
Ans. 
Capacitors store electrical energy while resistors limit the flow of current. Resistance is directly proportional to length and inversely proportional to area.
• Capacitors store electrical energy by creating an electric field between two conductive plates separated by an insulating material

• Resistors limit the flow of current in a circuit by dissipating energy in the form of heat

• The resistance of a resistor is directly pr...read more
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Basic aptitude and mcqs on analog and digital electronics

Q1. Introduce yourself ( 2 minutes)
Ans. 
I am a dedicated Analog Layout Engineer with a strong background in designing and implementing analog circuits.
• I have a Bachelor's degree in Electrical Engineering from XYZ University.

• I have 5 years of experience working in the semiconductor industry, specifically focusing on analog layout design.

• I am proficient in using CAD tools such as Cadence Virtuoso for layout design.

• I have a strong understanding of analog circui...read more
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Q2. Why are semiconductors used in electronics?
Ans. 
Semiconductors are used in electronics because of their ability to conduct electricity under certain conditions, making them essential for creating electronic devices.
• Semiconductors can be used to control the flow of electricity, allowing for the creation of transistors, diodes, and integrated circuits.

• They have properties that fall between conductors and insulators, making them versatile for various electronic applica...read more
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Q3. What is a diode and how does it work?
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A diode is a semiconductor device that allows current to flow in one direction only.
• A diode has two terminals - an anode and a cathode.

• It works by allowing current to flow from the anode to the cathode when a forward voltage is applied.

• When a reverse voltage is applied, the diode blocks the current flow.

• Diodes are commonly used in rectifiers, voltage regulators, and signal demodulation.

• Examples of diodes include silico...read more
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Q4. Biasing of a diode and it's voltage and current characteristics.
Ans. 
Biasing of a diode refers to applying a DC voltage across the diode to control its voltage and current characteristics.
• Biasing a diode involves applying a DC voltage across it in order to control its operation.

• Forward biasing occurs when the positive terminal of the voltage source is connected to the anode of the diode.

• Reverse biasing occurs when the negative terminal of the voltage source is connected to the anode of ...read more
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Q5. Fabrication process of a mosfet
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The fabrication process of a MOSFET involves creating the various layers and structures that make up the transistor.
• Start with a silicon wafer as the base material

• Create the gate oxide layer on top of the wafer

• Deposit polysilicon to form the gate electrode

• Implant dopants to create the source and drain regions

• Add metal layers for interconnects

• Perform various lithography and etching steps to define the transistor's featu
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Q6. Working and different regions of operations of the mosfet.
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MOSFET operates in different regions: cutoff, triode, saturation. Each region has specific characteristics.
• Cutoff region: MOSFET is off, no current flows

• Triode region: MOSFET acts as a resistor, linear relationship between Vgs and Id

• Saturation region: MOSFET acts as a current source, Vds is small and Id is relatively constant
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Basic verbal, aptitude questions, Calculate resistance value, multiplexer.

Q1. Resistor ideal short concepts, give 2-5 circuits and ask the difference between those ideal short, nodal analysis
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Q2. Capacitor, capacitance 12th formula, graph, charging discharging, directly or inversly proportional to area, distance between plates.
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Q3. Diode, P-N junction formation, graph, role of threshold, formula.
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Q4. Active region of Transistors, characteristics, graph, Cmos circuit basic concepts on inverter
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Q5. Based on your Project and HR questions
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Q1. 1st test we have 65 questions focusing on only Opamps
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Q1. We have mixed questions 40 in this test
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Q2. 20 from technical
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Q3. 20 from aptitude
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Q1. Asked few questions on network theory based circuits
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Q1. About the college experience
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Q2. About family and basic HR questions
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Mostly questions are on number system,probabilty and PC and from verbal reasoning

Q1. Design 3 input xor gate using 2:1 muxes
Ans. 
Use 2:1 muxes to create a 3 input XOR gate.
• Connect two of the inputs to the select lines of the muxes.

• Connect the third input to the data input of one of the muxes.

• Connect the outputs of the two muxes to the inputs of a third mux to get the XOR output.
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Q2. Frequency divider circuits
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Q3. Differnce between blocking and non blocking assignmenst
Ans. 
Blocking assignments wait for the assigned value to be calculated before moving on, while non-blocking assignments allow for concurrent execution.
• Blocking assignments use '=' operator and execute sequentially

• Non-blocking assignments use '<=' operator and allow for concurrent execution

• Blocking assignments can cause race conditions if not used carefully

• Non-blocking assignments are commonly used in Verilog for modeling ha
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Q4. 3 input xnor gate truth table
Ans. 
A 3-input XNOR gate truth table shows the output based on the inputs being equal or not.
• XNOR gate output is 1 when all inputs are equal, and 0 when inputs are not equal

• The truth table for a 3-input XNOR gate will have 8 rows (2^3) to cover all input combinations

• Example: Input A=0, B=1, C=0 will result in output 0
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Q5. Difference between 8051 and arm microprocessor
Ans. 
8051 is an 8-bit microcontroller while ARM is a 32-bit microprocessor with higher performance and more advanced features.
• 8051 is an 8-bit microcontroller, while ARM is a 32-bit microprocessor.

• ARM processors generally have higher performance and more advanced features compared to 8051.

• ARM processors are commonly used in mobile devices, embedded systems, and IoT applications, while 8051 is more commonly used in simple em...read more
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Basic questions in electroics, digital and analog

Q1. Basic to tough questions on opamp
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Q2. Basic to tough RC circuit questions
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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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