Advanced Linear Devices, Inc. (ALD) is a semiconductor company founded in 1985 and headquartered in Sunnyvale, California, USA. The company specializes in the design and manufacture of ultra-low-power, precision CMOS analog integrated circuits and standard products. Its core product lines include the EPAD (Electrically Programmable Analog Device) family, precision MOSFET arrays, analog switches, voltage comparators, voltage references, and timer circuits. ALD's EPAD technology enables on-chip trimming for high-accuracy analog performance, widely adopted in medical, industrial, and battery-powered applications. The company also offers custom and semi-custom analog ASIC solutions for specialized markets. With a focus on innovation in CMOS analog design, ALD holds numerous patents in low-voltage and high-precision circuit techniques. ALD products are known for their extremely low supply current, often operating at microvolt and nanoampere levels. The company serves a global customer base through direct sales and a network of distributors. Although niche in scale, ALD is recognized as a leader in programmable analog and ultra-low-power MOSFET solutions.