Apex Microtechnology
- Produces monolithic and hybrid high voltage and high power operational amplifiers, pulse width modulation (PWM) amplifiers, and motion control products.
- http://eportal.apexmicrotech.com/mainsite/

Linear RF Switches "High Life Cycle Reliable MEMS"
- Radant MEMS produces highly reliable, linear RF-MEMS “DC to 40 GHz” switches.
- http://www.radantmems.com

Wolfson Microelectronics plc
- Makes imaging, audio, video, and digital/analog converter devices for consumer applications.
- http://www.wolfsonmicro.com/

Advanced Monolithic Systems, Inc
- Produces operational amplifiers as well as ICs for power supply design (DC converters and voltage regulators, references, and detectors).
- http://www.advanced-monolithic.com/

Comtech PST Corp.
- Design, develop and manufacture linear, broadband and feed-forward solid state high power amplifiers. Online specifications.
- http://www.comtechpst.com/

Signal Processing Group Inc.
- Design, development, and supply of analog ASICs.
- http://www.signalpro.com/

Device Engineering
- Designer and manufacturer of standard and custom integrated circuits.
- http://www.deiaz.com

Clare Micronix Integrated Systems, Inc.
- Developer and manufacturer of application specific integrated circuit (ASIC) and application specicfic standard products (ASSP), specializing in analog and mixed-signal solutions.
- http://www.claremicronix.com

Circuit Integration Tech., Inc.
- Manufacturer of mixed signal analog and digital signal integrated circuits.
- http://www.cittek.com/

Jiangyin Changjiang Electronic Industrial Co.
- Manufacturer of semiconductors and discrete devices.
- http://www.cj-elec.com

Action Components and Modules Inc
- Manufacturer of linear ICs, providing solutions for display, telecommunication system and terminal makers.
- http://acami.com

Nippon Precision Circuits, Inc.
- Integrated circuits including phased locked loops, communications, DAC, digital filters, EL Drivers, oscillators, audio devices and real time clock. Part of the Seiko group.
- http://npcamerica.com

Volterra Semiconductor
- Designs advanced switching regulator ICs for low voltage applications.
- http://www.volterra.com

Consumer Microcircuits Limited
- Design and manufacture ICs for the communications industry.
- http://www.cmlmicro.co.uk

TelCom Semiconductor Inc.
- Manufacturer of a broad spectrum of linear and mixed signal solutions. Product line includes, power and thermal management and linear/mixed signal devices.
- http://www.telcom-semi.com/

Unitrode
- Experts in power and battery management. Now owned by TI.
- http://www.unitrode.com/

Swindon Silicon Systems
- Supply a range of ASICS and standard integrated circuits for RF markets.
- http://www.sssl.co.uk/

Supertex Inc.
- Vendors of high voltage ICs and DMOS transistors
- http://www.supertex.com/

Summit Microelectronics
- Manufacturer of programmable analog products. Specifically aimed at environmental monitoring.
- http://www.summitmicro.com/

Mixed Signal Integration
- Manufacture analog filters and custom LSI devices.
- http://www.mix-sig.com/

Linear Technology Corporation
- Produces a line of integrated circuits that support the communications, computing, industrial, and automotive markets.
- http://www.linear.com/

Advanced Linear Devices, Inc.
- Develops, manufactures and markets precision low power linear ICs. Products include EPADs, MOSFETs, rail-to-rail operational amplifiers, op amps, dual slope converters, voltage comparators, analog switches, timers, and matched transistor pairs.
- http://www.aldinc.com/

SiGe Microsystems, Inc.
- Designer and manufacturer of low phase noise, low power consumption Silicon-Germanium enhanced integrated circuits for wireless and broadband access communications.
- http://www.sige.com