LF347BN

Overview

The LF347BN is a quad JFET-input operational amplifier manufactured by Texas Instruments. It features four independent amplifiers in a single package, offering high-speed performance with a gain-bandwidth product of 3 MHz and a slew rate of 13 V/µs. The device operates on supply voltages ranging from 8 V to 36 V (single) or ±4 V to ±18 V (dual). Key electrical characteristics include an input bias current of 50 pA, input offset voltage of 3 mV, and common-mode rejection ratio of 80 dB. It is housed in a 14-pin SOIC surface-mount package and supports an operating temperature range of 0°C to 70°C.

Feature Summary

• JFET input stage providing low input bias current
• High slew rate for fast signal response
• Quad configuration integrating four amplifiers

Applications

• High-speed integrators
• Digital-to-analog converters
• Sample-and-hold circuits

Procurement Notes

Verify the specific suffix 'BN' against the manufacturer's official datasheet to confirm pinout compatibility and package dimensions. Ensure the component meets the required industrial temperature range specifications for your application environment before finalizing procurement decisions.

Selection Notes

Select this component when a quad amplifier configuration with JFET inputs is required for low noise and high impedance applications. Consider the SOIC-14 package constraints and verify that the 3 MHz bandwidth aligns with your signal processing requirements compared to higher-speed alternatives.

Part Context

This part belongs to the LF347 family of wide bandwidth quad JFET-input operational amplifiers. It serves as a surface-mount variant within the broader LF347 series, designed to replace older through-hole versions while maintaining similar electrical performance characteristics for general-purpose analog signal processing tasks.

Replacement Considerations

The LF347N is a verified through-hole replacement option within the same family. Verify pinout compatibility between SOIC and DIP packages during board redesign.