KF351

Overview

The KF351 is a single JFET input operational amplifier manufactured by onsemi. It features an internally trimmed offset voltage of 10mV and low input bias current of 50pA. The device offers a wide gain bandwidth of 4MHz and a high slew rate of 13V/µs. Input impedance reaches 10^12Ω. Absolute maximum ratings include ±18V supply voltage and continuous output short circuit protection. Operating temperature ranges from 0°C to +70°C.

Feature Summary

• JFET input stage providing high input impedance and low bias currents
• Internally compensated input offset voltage for simplified design
• High slew rate and wide gain bandwidth for fast signal processing
• Continuous output short-circuit protection capability

Applications

• Precision instrumentation circuits
• Signal conditioning systems
• High-speed analog applications

Procurement Notes

Verify the manufacturer designation as onsemi, noting historical Fairchild Semiconductor origins in documentation. Confirm the package type is 8-DIP and the operating temperature range is 0°C to +70°C. Ensure the component matches the specific electrical characteristics provided in the datasheet, particularly regarding offset voltage and bias current limits.

Selection Notes

Select this component when high input impedance and low bias current are required for precision applications. The internal trimming of the offset voltage reduces the need for external adjustment circuits. Consider the 8-DIP package for through-hole mounting requirements and verify that the ±18V supply rating aligns with system power constraints.

Part Context

This part belongs to the family of single operational amplifiers utilizing JFET input technology. It is designed for applications requiring high speed and precision. The device integrates well-matched JFET and bipolar transistors within a monolithic integrated circuit structure to achieve its performance specifications.

Replacement Considerations

Cross-reference with other single JFET op-amps offering similar bandwidth and bias current specifications if sourcing changes occur. Verify pinout compatibility and package dimensions before substitution.

FAQ

What is the typical input bias current for the KF351?

The typical input bias current is 50pA.

Does the KF351 require external frequency compensation?

No, the KF351 features internally compensated input offset voltage and frequency compensation.