Texas Instruments Analog Design Engineer Interview Questions and Answers

It was very nicee, time was very less

Q1. Basic diode, op amp circuits, ADC, DAC
Add your answer

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)
Ans. 
An RC lowpass filter allows low-frequency signals to pass while attenuating higher frequencies.
• Components: Resistor (R) and Capacitor (C) in series.

• Output taken across the capacitor.

• Cutoff frequency (fc) is determined by fc = 1/(2πRC).

• Common applications: Audio processing, signal conditioning.

• Example values: R = 1kΩ, C = 100nF gives fc ≈ 1.59 kHz.
Answered by AI
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...read more
Answered by AI
Add your answer
Q4. T-flip flop mod3 counters and reset
Ans. 
T-flip flop mod3 counters are used for counting in digital circuits, resetting after reaching a count of 3.
• A T-flip flop toggles its state on each clock pulse when T=1.

• For a mod3 counter, the states are 00, 01, and 10, representing counts 0, 1, and 2.

• After reaching the count of 2 (10), the next toggle resets the counter back to 0 (00).

• Example: If T=1, the sequence of outputs will be 00 -> 01 -> 10 -> 00.
Answered by AI
Add your answer
Q5. A tricky diode based network question with both cases(ideal and non-ideal diode)
Ans. 
Understanding diode networks involves analyzing ideal vs non-ideal behaviors in circuits.
• Ideal diodes have zero forward voltage drop and infinite reverse resistance.

• Non-ideal diodes exhibit a forward voltage drop (e.g., 0.7V for silicon) and leakage current.

• In an ideal diode network, current flows freely in one direction without loss.

• In a non-ideal diode network, consider the effects of temperature on diode performance...read more
Answered by AI
Add your answer
Q6. Aptitude question of 1000 bottles and one poisoned
Add your answer

Q1. Basic technical qns from analog and few digital
Add your answer
Q2. Qns about mosfets, ce cb config, some c questions
Add your answer

Q1. Projects based qns, basic analog qns, and few digital ones.
Add your answer

It was easy with some tricky question

Q1. Question on MOSFET Electrical network Analog electronics
Add your answer
Q2. Why cascade structure is used
Ans. 
Cascade structure is used to improve gain, bandwidth, and linearity of amplifiers.
• Cascade structure combines multiple amplifier stages to achieve higher overall gain.

• Each stage can be optimized for a specific frequency range, improving bandwidth.

• Cascade structure also reduces distortion and improves linearity.

• Examples include cascode amplifiers and differential amplifiers.

• Cascade structure is commonly used in high-freq...read more
Answered by AI
Add your answer
Q3. Why MOSFET over others
Ans. 
MOSFETs offer high efficiency, fast switching, and low power consumption, making them ideal for modern electronic applications.
• High input impedance reduces loading effects, allowing for better signal integrity.

• Fast switching speeds enable high-frequency applications, such as RF amplifiers.

• Low on-resistance minimizes power loss, making MOSFETs suitable for power management.

• Thermal stability allows for reliable operation...read more
Answered by AI
Add your answer

Q1. Analog electronics related questions RC CIRCUIT
Add your answer