KA358

Overview

The KA358 is a dual operational amplifier from onsemi, featuring two independent, high-gain, internally frequency-compensated circuits. It operates within a supply voltage range of 3V to 32V (or ±1.5V to ±16V). Key electrical parameters include a maximum input offset voltage of 7mV, an input bias current of 45nA, and a typical output short-circuit current of 30mA per channel. The device supports a common-mode rejection ratio of 65dB and has a gain-bandwidth product of 20kHz with a slew rate of 3V/µs. It functions across a temperature range of 0°C to 70°C.

Feature Summary

• Internally frequency compensated for stability without external components
• Dual independent high-gain amplifier channels
• Wide single-supply operating voltage capability

Applications

• Transducer amplifiers
• Active filters
• DC gain blocks

Procurement Notes

Verify the specific suffix (e.g., S, ADTF) against the required package type and tape/reel configuration. Confirm RoHS compliance status and lead times directly with authorized distributors. Check for obsolescence notices as some variants may be discontinued. Ensure the ordering part number matches the exact pinout and electrical specifications required for the design.

Selection Notes

Select this component for general-purpose analog signal conditioning where low power consumption and wide supply voltage flexibility are required. Consider the DIP or SOIC package availability based on manufacturing constraints. Evaluate the 30mA output drive capability against load requirements. Compare input offset voltage and bias current specifications against other series members if higher precision is needed.

Part Context

The KA358 belongs to the LM358 family of dual operational amplifiers, widely used in industrial and consumer electronics. It serves as a cost-effective solution for basic amplification tasks. The series is known for its ability to operate from single supplies, making it suitable for battery-powered applications. It is manufactured by onsemi, formerly Fairchild Semiconductor.

Replacement Considerations

LM358DR2G is a compatible alternative offering similar electrical characteristics in an SOIC-8 package. Verify pin compatibility and thermal performance before substitution.