GF Micro


A leading independent silicon design company for the past twenty-five years, GF Micro successfully delivers products and services that meet our customers’ absolute need for quality, reliability and performance. We focus on digital and analogue design along with fabless silicon supply. We provide IP design, ASIC design all the way through to final silicon solutions.


We have a growing number of highly skilled engineers based within our 3 offices in Stroud , Bristol and Scotland – with centres of excellence at each location.  GF Micro offers a wide range of bespoke design services and are constantly looking to future technologies and markets, bringing a level of leadership and innovation to everything we do. This has meant working with clients from a wide variety of industries including Avionics, Space, Precision Industrial and most recently Home Automation, RFID and Backplanes for Microdisplays.


Chip Design and Development

We work with leading foundries in technology nodes to offer a full range of digital and analogue ASIC design services


Feasibility Study

  • Architecture and process review
  • Assess requirements and risks
  • Full report


Specification creation and development

  • Spec development based on key requirements
  • Target parameters
  • Target operating conditions


Analogue and Digital Design

  • Block specification – in-house IP, custom IP, 3rd party IP
  • Schematic entry
  • Verification and Review



  • Place and Route
  • Verification and extraction
  • Full review


Physical verification and GDSII Generation


Additional services included

  • RTL Coding (VHDL, Verilog),
  • IP Integration,
  • Verification and validation (pre and post-layout).
  • Synthesis
  • Static Timing

Design for testability (DFT)



  • Optimised package for application / cost
  • RDL design and implementation
  • Prototype packaging


Device Bring Up

  • Design for test
  • Test specification generation
  • Device stimulation and monitoring software
  • Debug

Turnkey solutions

Project Management

  • From Feasibility to production
  • Regular updates / reviews Device assembly and test


Product validation


Preferred partners


Scaleable manufacturing


Supply Chain management

  • Manage materials from tape out all the way to final test
  • Inventory control and management

Speciality Services

Application for funding

  • Helping customers to secure funding


IP blocks

  • Delivery of silicon proven IP blocks
  • Reduced time to market
  • Reduced Risk


Maintenance contracts

  • After sales service to ensure quality and reliability


Software Development

  • Boot loader
  • Sample device drivers
  • Software Development Kit (SDK)

IP Cores

12 bit SAR ADC

The GF Micro ADC is a low power, 12-bit, successive approximation (SAR) Analogue-to-Digital Convertor (ADC) in the form of an IP block. The ADC mainly comprises a Capacitive Digital to Analog Converter (CDAC), a dynamic comparator, and an asynchronous SAR control logic.


Being compact and low power, it is designed specifically for battery powered systems. The sampling rate is 500 KSPS and both differential nonlinearity (DNL) and integral nonlinearity (INL) are < 2 LSB.


The IP block is designed in TSMC 40nm CMOS technology but can be retargeted to other processes and temperature ranges, allowing it to be used in design applications as diverse as biomedical imaging, industrial process control and high speed communication systems.

Digital temperature sensor

Perfectly suited for industrial applications, the GF Micro digital temperature sensor is available as a Licensed IP block.


It uses a low power 1.8V supply and has an operating range of -40°C to 125°C with an accuracy of ±1°C. Calibration points are conveniently placed at 25°C and 125°C – temperatures typically used for production test and wafer probe. The sensor produces a digital value accessible from a register location. Industry-standard digital interfaces are supported for easy product integration.


The IP has been developed using the Global Foundries 28SLP process and has a 273μm x 292μm footprint. It can also be re-targeted to other process nodes, making it a very flexible piece of IP for any design where space is at a premium.