Mixed-Signal Design

FC Engineering Services is a trusted mixed-signal integrated circuit consultant firm offering cutting-edge solutions.

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Overview of Mixed-Signal
Integrated Circuits (ICs)

What are Mixed-Signal ICs?

Mixed-signal design or mixed-signal IC design involves the integration of analog and digital circuitry on a single chip, enabling the efficient processing of continuous and discrete signals in electronic devices.

Why Mixed-signal ICs are Important

Mixed-signal integrated circuits (ICs) facilitate communication between analog and digital components and are integral to the functioning of devices such as smartphones, medical equipment, and automotive systems.

Analog and Digital Circuitry in Mixed-Signal Systems

In mixed-signal design, analog circuitry preserves continuous signal accuracy, while digital circuitry processes discrete signals for modern device computation.  

This is possible due to ADC and DAC integration present in mixed-signal systems. 

Analog-to-digital conversion (ADC) converts real-world signals like light into digital data for applications like data acquisition while digital-to-analog conversion (DAC) converts digital data to analog signals for devices to interact with the physical world.

Mixed-Signal Design Services

Our Areas Of Expertise

  1. ADC and DAC implementation.
  2. Mixed-signal system-on-chip (SoC) development.
  3. Ensuring proper Clock Domain Crossing (CDC) for reliable signal transitions between different clocks. 
  4. Enhancing mixed-signal circuit performance through various mixed-signal layout strategies.
  5. Mixed-signal testing and verification.

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If you are an engineering team or organization, our mixed-signal integrated circuit consultants can help you meet your mixed-signal design goals.

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Applications of Mixed-Signal Circuits

  • Communication Systems: Enabling smooth data transfer between analog signals (e.g. voice) and digital information in devices like smartphones. 
  • Audio Processing: Converting analog signals from microphones or instruments to digital data for processing and back.
  • Sensor Interfaces: Integrating analog sensors (e.g., temperature) with digital systems for data interpretation.

Other applications are in…

  • Data Acquisition Systems
  • Wireless Connectivity
  • Power Management
  • Automotive Electronics
  • Image and Video processing
  • Consumer Electronics
  • Medical Devices

Best Practices

Factors to Consider in Mixed-Signal Design

  1. Define clear specifications and requirements.
  2. Separate analog and digital grounds.
  3. Make careful component placement.
  4. Clock Domain considerations.
  5. Ensure robust power integrity.
  6. Implement signal isolation techniques.
  7. Utilize simulation and modeling tools.
  8. Test and verify.
  9. Implement grounding techniques.
  10. Follow best practices for routing.
  11. Documentation and revision control.
  12. Thermal considerations.
  13. EMI/RFI compliance.
  14. Engage professional mixed-signal integrated circuit consultants.

Featured Projects

Our electrical engineering services expertise derives from working on several projects, such as fixing the Polycom soundstation’s audio issues, the second-generation design of the One Touch Systems digital audio board, and many more.

Machined aluminum drive plate designed in SolidWorks

This drive plate was designed to specific tolerances as a critical component in a system demanding optimum performance levels.

One Touch Systems digital audio board

Design incorporating digital audio and an RF converter that converts base-band video to NTSC channels 3 and 4. Functions also on this board are Analog telephone interface (FCC Part 68); RS485 serial communications; Display and front panel I/O; ISA bus interface.

Polycom SoundStation

High-end audio-conferencing equipment with audio quality achieved by grounding and power distribution techniques, as well as acoustic separation of the microphones and speaker – designed using a full-room anechoic chamber.

Acutus AcQMap System

Designed to provide a clear image of a heart’s electrical activity in real time, displayed as an electrical charge density map on three-dimensional surface anatomy reconstructed from ultrasound imaging.Designed to provide a clear image of a heart’s electrical activity in real time, displayed as an electrical charge density map on three-dimensional surface anatomy reconstructed from ultrasound imaging.

Phoenix ICON Ophthalmic Camera

Designed with low-power LED and CMOS sensor to provide highly-detailed ophthalmic imaging with low-light – improving patient comfort and care.