ALD114904

ADVANCED LINEAR DEVICES, INC. e TM EPAD ® ENAB L E D ALD114804A/ALD114804/ALD114904A/ALD114904 QUAD/DUAL N-CHANNEL DEPLETION MODE EPAD® PRECISION MATCHED PAIR MOSFET ARRAY VGS(th)= -0.40V GENERAL DESCRIPTION APPLICATIONS ALD114804A/ALD114804/ALD114904A/ALD114904 are high precision monolithic quad/dual depletion mode N-Channel MOSFETs matched at the factory using ALD’s proven EPAD® CMOS technology. These devices are intended for low voltage, small signal applications. They are excellent functional replacements for normally-closed relay applications, as they are normally on (conducting) without any power applied, but could be turned off or modulated when system power supply is turned on. These MOSFETS have the unique characteristics of, when the gate is grounded, operating in the resistance mode for low drain voltage levels and in the current source mode for higher voltage levels and providing a constant drain current. ALD114804A/ALD114804/ALD114904A/ALD114904 MOSFETs are designed for exceptional device electrical characteristics matching. As these devices are on the same monolithic chip, they also exhibit excellent temperature tracking characteristics. They are versatile as design components for a broad range of analog applications, such as basic building blocks for current sources, differential amplifier input stages, transmission gates, and multiplexer applications. Besides matched pair electrical characteristics, each individual MOSFET also exhibits well control...