Linear technology company was founded in 1981. It designs, produces and sells a series of high performance standard Linear ICs. Headquartered in California, USA, the company has manufacturing and testing plants in California, Washington, Singapore, Malaysia, and design plants in California, Massachusetts, New Hampshire, Colorado and Singapore. The company's products include operational amplifier, instrument amplifier, audio amplifier, voltage stabilizing circuit, power management device, voltage reference, comparator and converter, switched capacitor filter, communication interface circuit, single chip data receiving subsystem, pulse width modulation circuit and sample collecting and holding device, etc. Products are used in communication, computer and peripherals, cellular telephone, industry, automobile, industrial control, network, factory automation products, satellite. At present, linear technology company focuses on High Performance Analog IC. The processes used include CMOS, BiCMOS, bipolar and complementary bipolar processes.