GENERAL DESCRIPTION

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.

FEATURES

? Depletion mode (normally ON)

? Precision Gate Threshold Voltages: -0.40V +/-0.02V

? Nominal RDS(ON) @ VGS = 0.0V of 5.4K?

? Matched MOSFET-to-MOSFET characteristics

? Tight lot-to-lot parametric control

? Low input capacitance

? VGS(th) match (VOS) — 20mV

? High input impedance — 1012? typical

? Positive, zero, and negative VGS(th) temperature coefficient

? DC current gain >108

? Low input and output leakage currents

APPLICATIONS

? Functional replacement of Form B (NC) relays

? Ultra low power (nanowatt) analog and digital circuits

? Ultra low operating voltage (<0.2V) analog and digital circuits

? Sub-threshold biased and operated circuits

? Zero power fail safe circuits in alarm systems

? Backup battery circuits

? Power failure and fail safe detector

? Source followers and high impedance buffers

? Precision current mirrors and current sources

? Capacitives probes and sensor interfaces

? Charge detectors and charge integrators

? Differential amplifier input stage

? High side switches

? Peak detectors and level shifters

? Sample and Hold

? Current multipliers

? Discrete analog switches and multiplexers

? Discrete voltage comparators