I was contacted by a recruiter who forwarded my resume to the hiring manager. Later there was a telephonic interview covering fundamentals of Analog design. I was invited to their HQs in Austin and met around 10 people who interviewed me. I was asked to analyze circuits and reason out their noise, frequency and power performance. All the interviewers were very cordial and gave me ample time to present my understanding. They are more interested in your approach. Be patient with yourself.