KA3403D

Overview

The KA3403D is a monolithic quad operational amplifier manufactured by onsemi, housed in a 14-SOP package. It features internally frequency-compensated amplifiers with Class AB output stages for minimal crossover distortion. The device supports single supply voltages from 3.0V to 36V and dual supplies of ±1.5V to ±18V. Electrical characteristics are similar to the KA741, including an input offset voltage maximum of 10mV at 25°C and an input bias current maximum of 500nA. The common-mode input range includes the negative supply rail.

Feature Summary

• Supports wide power supply ranges including single supply operation down to 3.0V
• Common-mode input range extends to the negative supply rail
• Class AB output stage minimizes crossover distortion
• Internally compensated for stability without external components

Applications

• General-purpose analog signal processing circuits
• Single-supply instrumentation applications
• Audio pre-amplification stages
• Active filter designs

Procurement Notes

Verify the specific ordering suffix 'D' corresponds to the 14-SOP surface-mount package configuration. Confirm the operating temperature range aligns with system requirements, as the KA3403 variant typically covers 0°C to +70°C. Ensure compatibility with existing PCB footprints designed for SOP-14 packages during component sourcing and integration.

Selection Notes

Select this component when a low-cost quad amplifier compatible with standard 741 pinouts is required. It is suitable for designs needing single-supply operation where the input common-mode range must include the negative rail. Consider the 14-SOP package for surface-mount assembly needs. Evaluate thermal dissipation capabilities within the specified operating temperature limits for the chosen application environment.

Part Context

This part belongs to the KA3303/KA3403 series of quad operational amplifiers originally developed by Fairchild Semiconductor. The series provides general-purpose amplification with performance comparable to industry-standard devices like the UA741. The KA3403D specifically denotes the commercial grade version packaged in a 14-pin Small Outline Package (SOP).

Replacement Considerations

Direct substitutes include the KA3303D for extended temperature ranges or the MC3403D for potentially lower quiescent current. Verify pinout compatibility and electrical parameter tolerances before substituting.