LF353MX/NOPB

Overview

The LF353MX/NOPB is a dual wide-bandwidth high-speed JFET input operational amplifier manufactured by Texas Instruments. It utilizes BI-FET II technology for internally trimmed input offset voltage, ensuring low power consumption while maintaining high gain-bandwidth product and fast slew rate. The device features matched high-voltage JFET input devices that provide very low input bias and offset currents. Key electrical parameters include a 4 MHz gain-bandwidth product, a 13 V/µs slew rate, a maximum supply voltage of 36 V, and an operating temperature range from 0°C to 70°C.

Feature Summary

• BI-FET II technology provides internally adjusted input offset voltage for improved precision.
• High-voltage JFET inputs deliver extremely low input bias current and high input impedance.
• Wide bandwidth and fast slew rate support high-frequency signal processing applications.

Applications

• High-speed integrator circuits
• Fast digital-to-analog converters (D/A)
• Sample-and-hold circuits

Procurement Notes

Verify the manufacturer origin, as the LF353 series is produced by multiple vendors including onsemi and Texas Instruments. Confirm the specific package type matches the design requirements, as this suffix indicates surface-mount packaging. Ensure the component meets RoHS compliance standards if required by the project specifications.

Selection Notes

Select this component when upgrading from standard bipolar op-amps like the LM358 to achieve higher speed and lower noise without increasing power consumption. It is suitable for designs requiring high input impedance and low drift. Verify that the single-supply or split-supply voltage ranges align with the system's power rails.

Part Context

This part belongs to the LF353 family of dual JFET-input operational amplifiers. It serves as a direct pin-compatible upgrade for legacy designs using the LM1558 or LM358, offering superior performance in terms of bandwidth and input characteristics while maintaining similar form factors for easy integration into existing PCB layouts.

Replacement Considerations

Direct substitutes include the LF353N/NOPB for through-hole applications and the LF353DR/NOPB for SOIC packages. Other compatible variants within the same family may be used if pin compatibility and electrical specifications are verified against the original design constraints.