LF353MX

Overview

The LF353MX is a dual operational amplifier manufactured by National Semiconductor, now part of Texas Instruments. It features JFET inputs for high impedance and low bias current. The device offers a gain-bandwidth product of 4 MHz and a slew rate of 13 V/µs. It operates on supply voltages from 10V to 36V. Key electrical parameters include an input offset voltage of 5 mV, input bias current of 50 pA, and CMRR of 70 dB. It is housed in an 8-pin SOIC package.

Feature Summary

• JFET input stage providing high input impedance
• Internal frequency compensation
• Output short-circuit protection
• Latch-up free operation

Applications

• Audio preamplifiers
• Active filters
• Voltage followers

Procurement Notes

Verify the manufacturer origin as National Semiconductor or Texas Instruments. Confirm the package type matches the required PCB footprint. Check for RoHS compliance status if environmental regulations apply. Ensure the operating temperature range meets system requirements.

Selection Notes

Select this component for applications requiring high input impedance and moderate speed. Compare with other JFET op-amps for offset voltage and noise specifications. Verify pin compatibility with existing designs using the DIP variant.

Part Context

This component belongs to the LF353 family of dual JFET-input operational amplifiers. It shares characteristics with the LF353N but differs in packaging. The series is known for balancing performance and power consumption.

Replacement Considerations

Check datasheets for equivalent parts like the TL072 or LM833. Verify pinout and electrical parameter overlaps before substitution.