What Wolfson Microelectronics does

Wolfson Microelectronics, founded in 1984 in Edinburgh, United Kingdom, by David Milne and Jim Reid, was a UK-headquartered semiconductor company specializing in low-power, high-precision mixed-signal ICs for audio and voice applications. The company built its reputation on audio codecs, DACs, ADCs, and amplifiers that "bridged the analog world with the digital world," accumulating over four decades of domain expertise and a patent portfolio of more than 4,340 issued and pending filings worldwide. Following its 2014 acquisition by Cirrus Logic, Wolfson ceased to operate as a standalone entity and was integrated as a product line and brand (Wolfson Audio) within Cirrus Logic, with its Edinburgh offices retained as a regional headquarters for Cirrus Logic International (UK) Ltd.

As part of the combined Cirrus Logic/Wolfson platform, the business designs and ships a broad mixed-signal semiconductor portfolio including boosted amplifiers (CS35L42, CS35L45), audio codecs spanning Smart, Portable, Mono/Stereo, Multi-channel, AC'97/HD, and video-codec variants, audio DSPs, haptic drivers (CS40L series), fast-charging ICs, imaging ADCs (CS82L and WM8231-8235 series), and Delta Sigma energy-measurement converters. The Wolfson intellectual property — including proprietary techniques such as Hybrid Gain Control and zero-cross detection — underpins continued product differentiation. Revenue is generated through B2B hardware sales to the world's top mobile and consumer electronics OEMs, with expanding exposure to leading automotive manufacturers and industrial/measurement customers.

The company operates a fabless semiconductor model, working with external manufacturing partners for chip production. Go-to-market combines direct enterprise sales to OEMs (with multi-year contracts and quote-based, volume-dependent pricing) with authorized distributors and an online Sample Center for engineer evaluations. Supporting software ecosystems (WISCE development tools, SoundClear Studio, FlexGUI, Lochnagar 2 evaluation hardware) extend customer engagement through the design and production lifecycle, while marketing spans corporate web properties, LinkedIn, Facebook, Instagram, and an Innovation Showcase for technical content.

Name

Wolfson Microelectronics

Legal name

Wolfson Microelectronics

Website

https://cirrus.com

Company type

Private

Founded year

1984

Operating status

Acquired

Headcount range

251–500 employees

Short description

Wolfson Microelectronics, founded in 1984 in Edinburgh and acquired by Cirrus Logic in 2014, designs low-power, high-precision mixed-signal semiconductor ICs — audio codecs, DACs/ADCs, amplifiers, haptic drivers, and power/charging chips — sold to the world's largest mobile, consumer, automotive, and industrial OEMs.

Ownership category

akta.pro rank

Product category

Mixed-Signal Semiconductors

NAICS

Semiconductor and Related Device Manufacturing (334413)

SIC

Semiconductors & Related Devices (3674)

akta.pro primary industry

Audio & Voice Mixed-Signal ICs (Codecs/Amplifiers) (HDAHAIAG)

akta.pro secondary industry

Mixed-Signal ASICs & ASSPs (Custom/Platform Mixed-Signal) (HDAHAIAF)

Keywords

• Mixed-signal semiconductors
• Audio codec ICs
• Digital-to-analog converters
• Analog-to-digital converters
• Haptic driver ICs

Headquarters

HQ city

Edinburgh

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Technology or R&D, Supply Chain, Personnel, Operations, Marketing or Sales

Revenue model

1. Semiconductor Hardware Sales: Cirrus Logic generates revenue primarily through the sale of semiconductor chips including audio codecs, amplifiers, converters, haptic drivers, and other mixed-signal ICs to OEM customers in mobile, consumer, automotive, and industrial markets. Products are sold as components incorporated into end-user devices.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

Wolfson Microelectronics designs, develops and supplies high-performance mixed-signal semiconductor ICs for audio, imaging and industrial applications. Its portfolio includes audio codecs, DACs, ADCs, audio amplifiers, haptic drivers, energy measurement ICs and power management chips, sold as components to OEMs in mobile, consumer, automotive, professional audio and industrial markets.

Product overview

Wolfson Microelectronics, acquired by Cirrus Logic in 2014, offers a comprehensive portfolio of low-power, high-precision mixed-signal ICs for audio and industrial applications. The product portfolio spans Audio Amplifiers (CS35L42, CS35L45), Audio Converters (A/D and D/A converters including Wolfson-branded WM8523, WM8524, WM8918 DACs), Audio Codecs (Smart Codecs, Portable Codecs, Mono/Stereo Codecs with Wolfson models like WM8281, WM8904, WM8958, WM8962B, WM8963, WM8734, WM8940, WM8994), Audio DSPs, Haptic Drivers (CS40L series), Imaging A/D Converters (CS82L series and WM8231-35 Wolfson imaging products), Energy Measurement ICs (CS5460-5490 series), Delta Sigma Converters, and Fast Charging ICs. The portfolio also includes development tools (WISCE, SoundClear Studio, FlexGUI) and the Lochnagar 2 development platform. Cirrus Logic leverages over 4,340 issued and pending patents to deliver chips for smartphones, laptops, tablets, wearables, AR/VR, automotive, smart home, and industrial applications.

Differentiator

Problem solved

Functional benefit

Brands

• Wolfson Audio: Wolfson audio products including codecs, DACs, and ADCs that are now part of Cirrus Logic's product portfolio after the 2014 acquisition.

Products and services

• Audio Amplifiers Boosted amplifiers that deliver maximum loudness with high-quality sound output for smartphones, laptops, tablets, wearables and AR/VR applications (CS35L42, CS35L45).
• Audio A/D Converters High-precision analog-to-digital converters for audio applications, including CS5302P, CS5304P, CS5308P, CS5312S, CS5346, CS5351, CS5361, CS5381 models.
• Audio D/A Converters Digital-to-analog converters including CS4302P, CS4304P, CS4308P, CS43131, CS43198, and Wolfson-branded WM8523, WM8524, WM8918 DACs.
• Audio Codecs Comprehensive audio codec portfolio including Smart Codecs, Portable Codecs, Mono/Stereo Codecs, Multi-channel Codecs, AC'97/HD Audio Codecs, and Codecs with Video functionality.
• Audio DSPs Digital signal processors for audio processing including CS42L42, CS47L24, CS47L35, CS47L90, CS48L32, CS4953xx, CS4970xx, CS49834/44, and WM8281.
• Audio Clock Generation and Jitter Reduction Precision clocking devices for audio sub-systems: CS2000, CS2100, CS2200, CS2300, CS2500, CS2501, CS2600.
• Haptic Drivers High-precision, high-definition haptics drivers including CS40L51, CS40L52, CS40L53, CS40L25/25B, CS40L26/26B, CS40L27R for crisper, punchier haptic effects.
• Interfaces and Sample Rate Converters S/PDIF and AES interface products including CS8416, WM8804, WM8805 for professional, consumer, and automotive audio applications.
• Volume Controls Digital volume controls that reduce external component count: CS3308, CS3318.
• Imaging A/D Converters High-precision imaging ADCs for scan applications: CS82L41, CS82L44, CS82L46, and Wolfson-branded WM8231, WM8233, WM8234, WM8235 with analog signal processing including reset level clamping and correlated double sampling.
• Energy Measurement ICs High-accuracy energy measurement solutions: CS5463, CS5464, CS5467, CS5480, CS5484, CS5490 for utility meters, power supply monitors, smart appliances, and solar inverters.
• Delta Sigma A/D Converters High-precision industrial measurement ADCs: CS5510, CS5511, CS5512, CS5513, CS5529 based on proprietary Delta Sigma technology.
• Delta Sigma AD Converters with Integrated Amplifiers Integrated ADC solutions for industrial process control and analytical instruments: CS5521, CS5522, CS5523, CS5524, CS5525, CS5526, CS5528, CS5530, CS5531, CS5532, CS5533, CS5534, CS5550.
• Fast Charging ICs Power management solutions enabling rapid device charging to ensure long-lasting battery performance for mobile devices.
• WISCE Development Tools Suite Comprehensive development and evaluation software platform for configuring and programming Cirrus Logic/Wolfson audio devices with a graphical plugin interface.
• SoundClear Studio Audio software development tool for voice processing and SoundClear Control features including wake word engines.
• FlexGUI Mixed Signal Audio Software GUI-based development software for configuring volume controls and mixed signal audio components.
• CDB6271-2 (Lochnagar 2) Development Platform Evaluation and development platform with interchangeable daughtercards supporting up to 16 channels of USB audio, software-controlled signal routing, and integrated current monitoring; compatible with WISCE tools suite.

Quantifiable outcome

• Over 4,340 issued and pending patents worldwide
• +1 more outcomes

Named customers2 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• Wolfson MicroelectronicscoreTechnology or Integration · 1 January 2014Cirrus Logic's acquisition of Wolfson Microelectronics in 2014 was a strategic move that laid the foundation for partnerships with leading global brands. Wolfson's audio expertise and product portfolio were integrated into Cirrus Logic's offerings, strengthening their position in the audio semiconductor market.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Synaptics: Broad mixed-signal semiconductor company serving mobile, IoT, and PC markets with audio, voice, haptics, and connectivity solutions. Overlaps with Wolfson/Cirrus Logic in mobile voice processing and emerging haptics categories.

Emerging players

• ESS Technology: Specialty fabless semiconductor company focused on high-performance audio DACs and amplifiers for headphones, mobile, and home audio. Comparable to Wolfson's high-performance DAC/amplifier franchise in premium audio segments.

Direct peers

• NXP Semiconductors: Major mixed-signal and automotive semiconductor supplier with strong positions in audio amplifiers, DSPs, and in-cabin audio processing. Competes directly with Wolfson/Cirrus Logic in automotive premium audio and mobile amplifier sockets.
• Texas Instruments: One of the largest analog and mixed-signal semiconductor companies in the world, with a deep portfolio of audio codecs, amplifiers, ADCs, and DACs serving mobile, automotive, and industrial customers. Directly competes with Wolfson/Cirrus Logic across audio converter, amplifier, and codec categories.
• Realtek Semiconductor: Fabless Taiwanese semiconductor company specializing in audio codecs, DACs, and PC audio ICs. Directly competes with Wolfson/Cirrus Logic in PC audio, headphone DACs, and consumer audio codec sockets.
• STMicroelectronics: Large European mixed-signal semiconductor company with significant audio amplifier and power management product lines serving mobile, automotive, and industrial markets. Overlaps with Wolfson/Cirrus Logic in smart amplifiers and mobile audio.
• Asahi Kasei Microdevices (AKM): Japanese specialist in high-performance audio DACs, ADCs, and mixed-signal ICs for professional and consumer audio. Direct competitor to Wolfson's high-precision converter portfolio in premium consumer and pro-audio applications.
• Qualcomm: Dominant mobile SoC and platform supplier that integrates audio codecs and voice processing for smartphones and headsets. Competes with Wolfson/Cirrus Logic for audio content in mobile and AR/VR designs, including via its own WSA and Bluetooth audio SoCs.
• Dialog Semiconductor (Renesas): Mixed-signal and power management IC specialist (now part of Renesas) serving mobile, automotive, and IoT customers with low-power audio, haptics, and fast charging products. Closely comparable to Wolfson's low-power mixed-signal positioning.
• Analog Devices: Global leader in high-performance analog, mixed-signal, and DSP integrated circuits, including precision audio converters (ADCs/DACs) and amplifiers. Directly comparable to Wolfson's high-precision converter and mixed-signal portfolio across pro audio, industrial, and automotive.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xx.com/cirruslogic
• Facebookfacebook.com/clcareers

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds2 records

Investors2 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Wolfson Microelectronics