Analog Bits Interview Questions

Updated May 9, 2015
28 Interview Reviews

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  1.  

    No Offer
    Neutral Experience
    Average Interview

    Application

    I applied online. The process took a weekinterviewed at Analog Bits in April 2015.

    Interview

    It takes one week after submitting the resume and the interview last about 15 minutes, Only some basic questions about circuits design most are digital circuits design. After the phone interview, they schedule a on site interview.

    Interview Questions

    • only some basic questions about how to build an nor and nand gate frequency   Answer Question
  2.  

    Entry Level Mixed Signal Design Interview

    Anonymous Employee in Los Angeles, CA
    No Offer
    Negative Experience
    Difficult Interview

    Application

    I applied online. The process took 4 daysinterviewed at Analog Bits (Los Angeles, CA) in March 2015.

    Interview

    Seemed pointless. Exactly what was asked to others >> what will be Vs if VD of NMOS is 5V and Vg=5V, 2.5V. the source seems floating but he does'nt tell clearly. When asked about vth value, was told to answer the question instead of asking one. The answer I gave was correct under an assumption but never got to explain since the interviewer cut the phone abruptly. Hope this guy is not representing a typical Indian manager in this line of work.

    Interview Questions

    • >> what will be Vs if VD of NMOS is 5V and Vg=5V, 2.5V. the source seems floating but he does'nt tell clearly. When asked about vth value, was told to answer the question instead of asking one.   1 Answer
  3. Helpful (5)  

    Declined Offer
    Neutral Experience
    Easy Interview

    Application

    I applied online. The process took 1 dayinterviewed at Analog Bits (Sunnyvale, CA) in February 2015.

    Interview

    My phone interview only took 15 minutes. Before the phone interview, you need to take a look at the frequently asked questions on glassdoor. Basically, PMOS and NMOS pass transistor logic, open source voltage, an inverter with resistor feedback, an inverter whose vdd is connected with an inductor. At the end of interview, I was told to invited to an onsite interview. Being a small company, Analog bits is not generous about onsite trip. You will be only allowed to fly with Southwest airline with cheapest tickets, and this can be the reason why your interview can be arranged at 3 weeks after your phone interview. The onsite interview questions are very basic, and the decision, in my case, is given in just a week, but the written offer is extended 3 weeks later when another offer kicked in, so I declined the offer from Analog bits. The advantage of the offer from the Analog bits is only high base salary. No relocation fees, no 401K. Moreover, Analog Bits doesn't seem to want to have me in its team so I used its offer to ask for a salary raise in my second offer :)

    Interview Questions

    • These are my onsite interview questions and some of them is related to my resume. 1. Given a chain of inverter, size the gates and calculate the delay; 2. Given an optimization goal, resize the chain of inverter, and recalculate the delay; 3. Given a typical 6T-SRAM, described how read and write work. Suppose we only have on access transistor but need to realize the read and write, how do you design the another access transistor? Both in analog and digital ways; 4. Given a simple charge pump circuit, figure out the waveform at certain nodes; 5. Given a ideal op-amp and 2 resistors with same value, draw the circuit gain of -1, 1 and 0.5, and in the third case, make sure that the input resistance is infinity; 6. Given a 50%-duty cycle waveform, draw the 33%-duty cycle waveform (division by 3), and draw the FSM state diagram to realize the division by 3; 7. Given a transmission line and a source with an adjustable resistance. If the load resistance of the transmission line is given, figure out the source resistance to make sure that the load has the maximum load power. If the transmission line is open on one end and connect an ideal current source at the other end, draw the voltage waveform at the output of the current source; 8. Given a rc high-pass filter and apply an input voltage step and take the output voltage from resistor, draw the voltage waveform of the resistor, and explain the waveform about its peak and rc time constant; 9. Given a self-bias amplifier with two logic inputs and one output, figure out the logic functions; 10. If the channel length of a device is cut down by 1/2, how does the unity-gain frequency change? Hint: Long and short channel devices are different; 10. Given a cs-amplifier with source degeneration (the classical continuous-time linear equalizer circuit), solve for the transfer functions, given the relative time constant positions, draw the bode plots, mainly about phase, explain why phase is positive and if this is contradictory to causality; 11. Given a 2-input nor gate, size the gate with equal rise and fall time, find out the faster input and explain why; 12. In high speed IO, why are the both Tx and Rx termination resistors matched with the characteristic impedance of the transmission line? 13. Describe your favorite project on your resume; 14. Draw the schematic of a PMOS, given the voltages of 4 terminals, and figure out the operation region of PMOS. Figure out the the output voltage of a cascaded PMOS circuit; 15. A transistor with its source connected a capacitor, apply a DC voltage at the drain, and figure out the voltage waveform of the capacitor; If you aced most of the technical questions, you are very likely to invited to be shown around the company, and then you will have the behavioral interview: 1. Tell me about yourself, like your past experience in middle school. 2. Tell me what you like about Analog Bits (usually after showing around the company). 3. What's your expectation of salary? 4. What's your hobbies? 5. Do you like your school and why? 6. When can you start? 7. If Analog Bits gives you an offer today and you get another offer from Broadcom and Qualcomm tomorrow, which one do you choose? 8. What do you see yourself in your career? 9. Give me two references.   1 Answer
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  5.  

    No Offer
    Negative Experience

    Application

    I applied online – interviewed at Analog Bits.

    Interview

    No management. Interview was got reschedule 4 times and even after that interview was taken on non-scheduled time by just calling randomly. Interviewer was very rude. He insulted me for my wrong answer and abruptly cut the interview.

    Interview Questions

  6.  

    No Offer
    Negative Experience
    Average Interview

    Application

    I applied online. The process took 3 daysinterviewed at Analog Bits in February 2015.

    Interview

    HR Email me first, ask for unofficial transcripts. Then HR call to set up phone interview on the next day. A technician with India accent phone interviewed me. This is my first phone interview.

    Interview Questions

    • At first device, NAND, NOR gates, I am fine. But later mostly digital, I forget those latches, flip-flop. It is easy, but I am not well prepared. This is my first phone interview.   Answer Question
  7.  

    Entry Level CMOS Interview

    Anonymous Employee
    No Offer
    Negative Experience
    Difficult Interview

    Interview

    Fast! First had an quick screening with HR dept. Next day was the technical phone screening. Most of the question was simple, but the last one was difficult.... I couldn't come up with an answer so the interviewer hung up mid sentence though

    Interview Questions

  8.  

    Accepted Offer
    Positive Experience
    Average Interview

    Application

    I applied online – interviewed at Analog Bits in October 2014.

    Interview

    They contacted me the day after I submitted my application. The process was very fast. The phone interview went very well, all the questions were digital, the interviewer told me that they will contact me for setting up onsite interview for following week. Onsite interview questions were basic questions too both in analog and digital.

    Interview Questions

    • They ask very basic questions, mostly digital. Questions are all the same as ones people mentioned before. How to build frequency divider, NAND, NOR, INV,...   Answer Question
  9.  

    No Offer
    Negative Experience
    Difficult Interview

    Application

    I applied through college or university. The process took 4 daysinterviewed at Analog Bits in August 2014.

    Interview

    I have applied the position on my university's recruiting website. They scheduled phone interview with me at the next day. Phone interview comes within a week. They usually very hurry. The phone interview tokes about 5min.

    Interview Questions

    • When connected two NMOSs at their drains, say NMOS1 and NMOS2, assign Vg1=3V, Vg2=4V, Vs1=5V, what will be the voltage at Vs2? What is the working region of NMOS2   2 Answers
  10. Helpful (2)  

    Entry Level Position Interview

    Anonymous Employee in Mountain View, CA
    No Offer
    Negative Experience
    Difficult Interview

    Application

    I applied online. The process took 2+ weeksinterviewed at Analog Bits (Mountain View, CA) in April 2014.

    Interview

    I emailed my resume to the email specified on their website. Got a phone call in 2 days an scheduled a phone interview after 2weeks. They called on time and started asking questions. I felt that the interviewer was hurry and talked fast.

    Interview Questions

    • What happens if you connect inductors after the supplies(VDD,VSS) to an inverter.What happens if I give -2V at the output of the inverter- with L and without L. The interviewer was very rude in the way he asked the questions and talked to me, from which I felt that I did not like their work culture/people- as a college graduate, we expect people/seniors to be patient or supportive rather than harsh. Overall, I don't recommend this.   1 Answer
  11. Helpful (1)  

    No Offer

    Application

    I applied through college or university. The process took a weekinterviewed at Analog Bits.

    Interview

    Update resume via college system. Contacted by HR after 1 week and set a telephone interview time. A few questions about inverting NMOS and PMOS, setup and hold. Vtn and Vtp...

    Interview Questions

    • Half plate as 1 and half plate as 0. Design a circuit to detect clockwise or conterclk.   Answer Question
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