PLL Designer

    • Austin, TX


Posted: Aug 2, 2019

Weekly Hours: 40

Role Number: 200001922

At Apple, we work every single day to craft products that enrich people's lives. Do you love working on challenges that no one has solved yet? Do you like changing the game? We have an opportunity for a visionary and especially talented Analog Layout Designer. As a member of our dynamic group, you will have the rare and rewarding opportunity to craft upcoming products that will delight and inspire millions of Apple's customers every single day. Apple Silicon Engineering is seeking qualified PLL designers to work on the next generation PLLs for Apple's world-leading systems-on-chip (SOCs). You will be part of a growing analog/mixed-signal team involved in design and productization on leading-edge CMOS process technology nodes.

Key Qualifications

  • - The ideal candidate should have confirmed taking chips to production with experience in the following areas: Dual charge-pump PLL designs, Fractional-N PLLs, spread-spectrum PLLs, Digital PLL techniques, etc.
  • - High speed digital circuit design and analysis (e.g., STA, formal verification).
  • - Digitally assisted analog circuit and techniques. Good knowledge of band gaps, bias, op-amps, LDOs, feedback and compensation techniques.
  • - Experience in VCO design including but not limited to LC VCOs. Lab and ATE test plans and measurement for characterization, and volume production.


- Understand system level requirements to build overall PLL specifications. - Build behavioral models of PLL to drive architectural decisions and derive block-level requirements for analog and digital blocks. - Work closely with mask design team to implement layout view of designs. - Complete top-level spice and mixed-mode simulations to validate top-level integration. - Run pre-tapeout verification flows to confirm design meets performance, power, reliability and timing requirements. - Define production/bench-level test plans for post-silicon characterization. - Work with lab engineers in taking lab measurements to validate IP. - Review ATE and lab test results to resolve yield issues and drive bug fixes. - Work with system teams in system bring-up and debug. - Hold design reviews of blocks with peers/management to show design meets spec targets and requirements.

Education & Experience

Masters Degree in Electrical Engineering with 3+ yrs in related area of expertise or PhD. Apple is an Equal Opportunity Employer that is committed to inclusion and diversity. We also take affirmative action to offer employment and advancement opportunities to all applicants, including minorities, women, protected veterans, and individuals with disabilities. Apple will not discriminate or retaliate against applicants who inquire about, disclose, or discuss their compensation or that of other applicants.

Additional Requirements

Working at Apple means doing more than you ever thought possible and having more impact than you ever imagined.

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