Texas Instruments Interview Questions, Process, and Tips

The question asks to implement a block diagram for a given transfer function in the form of a/b.

• Identify the numerator and denominator polynomials of the transfer function

• Draw blocks for each polynomial term, representing multiplication and addition operations

• Connect the blocks according to the transfer function equation

• Include any necessary delays or feedback loops

• Label the inputs and outputs of the block diagram

No

• The system is not stable because the transfer function has a pole at z = 1

• A stable system should have all poles inside the unit circle in the z-plane

• In this case, the pole at z = 1 lies on the unit circle, making the system marginally stable

IIR and FIR filters are two types of digital filters used in signal processing.

• IIR (Infinite Impulse Response) filters use feedback to create a response to an input signal.

• FIR (Finite Impulse Response) filters only use feedforward and have a finite duration of response.

• IIR filters can be implemented with fewer coefficients but may be less stable than FIR filters.

• FIR filters have linear phase response and are generally ...read more

The sampling theorem states that a signal must be sampled at a rate at least twice its bandwidth to avoid aliasing.

• The sampling theorem is also known as the Nyquist-Shannon sampling theorem.

• Sampling at a rate slightly more than twice the bandwidth ensures that all the information in the signal is captured without distortion.

• If the sampling frequency is too low, aliasing can occur, where high-frequency components are in...read more

DTFT is a continuous function that represents the frequency content of a discrete-time signal, while DFT is a discrete function that represents the frequency content of a finite-length sequence.

• DTFT is defined for both finite and infinite-length signals, while DFT is only defined for finite-length sequences.

• DTFT is a continuous function in frequency domain, while DFT is a discrete function in frequency domain.

• DTFT prov...read more

The output sequence y[n] can be obtained by convolving the input sequence x[n] with the impulse response h[n] = [1, 0, 0, 0, -1].

• The given transfer function H(Z) represents a discrete-time system with a finite impulse response (FIR) filter.

• To find y[n], we need to convolve x[n] with the impulse response h[n] = [1, 0, 0, 0, -1].

• Convolution can be performed by sliding the impulse response over the input sequence and summ...read more

It is better to take another random shot.

• The probability of hitting the target is higher when taking another random shot.

• Taking the next slot after the one that missed you does not increase the chances of hitting the target.

• Each slot has an equal probability of being chosen, so the odds are the same for both options.

I am an avid rock climber and have scaled several peaks around the world.

• I have been rock climbing for over 10 years

• I have climbed peaks in the Himalayas, Andes, and Alps

• Rock climbing has taught me perseverance, problem-solving, and teamwork

My parents are both teachers, my mom teaches English and my dad teaches Math.

• Both parents are teachers

• Mom teaches English

• Dad teaches Math

To call a mobile, the process involves dialing the correct phone number and initiating the call.

• Dial the correct phone number

• Initiate the call

• Wait for the recipient to answer

• If the recipient does not answer, leave a voicemail or try again later

Voice is modulated by changing the pitch, volume, and tone of the vocal cords.

• Pitch is controlled by the tension of the vocal cords

• Volume is controlled by the amount of air passing through the vocal cords

• Tone is controlled by the shape of the mouth and throat

• Modulation can also be influenced by emotions and intention

• Voice modulation is important for effective communication

The internal block diagram of a microcontroller consists of CPU, memory, input/output ports, timers, and other peripherals.

• CPU is the central processing unit that executes instructions

• Memory includes ROM, RAM, and EEPROM

• Input/output ports are used to communicate with external devices

• Timers are used for timekeeping and scheduling tasks

• Other peripherals include analog-to-digital converters, serial communication interface

A TSA candidate has specialized knowledge and skills in security screening, while a regular salesman does not.

• TSA candidates undergo extensive training in security screening procedures and techniques.

• They must have knowledge of security regulations and be able to identify potential threats.

• A regular salesman may have knowledge of their product, but does not have the same level of specialized training in security screen...read more

Various types of oscillators include RC, LC, crystal, relaxation, and voltage-controlled oscillators.

• RC oscillator uses a resistor and capacitor to create a time-varying signal

• LC oscillator uses an inductor and capacitor to create a resonant circuit

• Crystal oscillator uses a quartz crystal to create a stable frequency signal

• Relaxation oscillator uses a nonlinear element like a transistor to create a periodic waveform

• Vol...read more

Barkhausen's criterion is used to determine the conditions for sustained oscillations in an electronic oscillator.

• Barkhausen's criterion states that the loop gain of an oscillator must be equal to unity and the phase shift around the loop must be a multiple of 360 degrees.

• It is used to design and analyze electronic oscillators such as LC oscillators, crystal oscillators, and RC oscillators.

• Barkhausen's criterion is imp...read more