LF353MX

Overview

The LF353MX is a dual wideband JFET input operational amplifier manufactured by Texas Instruments. It features a gain-bandwidth product of 4 MHz and a slew rate of 13 V/µs. The device operates on a supply voltage range from ±5 V to ±18 V (10 V to 36 V total). Key electrical parameters include an input offset voltage of 10 mV, input bias current of 200 pA, and typical input noise voltage density of 16 nV/√Hz. It is housed in an 8-SOIC surface-mount package with an operating temperature range of 0°C to +70°C.

Feature Summary

• Utilizes BI-FET II technology for high-speed performance with low power consumption
• Features internally trimmed input offset voltage for precision applications
• Provides very low input bias and offset currents due to matched high-voltage JFET inputs

Applications

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

Procurement Notes

Verify the specific manufacturer source, as the LF353MX designation appears in distributor listings associated with onsemi, while Texas Instruments typically uses LF353MX/NOPB or similar suffixes for their SOIC variants. Confirm RoHS compliance status and lead times directly with the supplier, as availability may vary between manufacturers offering equivalent part numbers.

Selection Notes

Select this component when designing circuits requiring high input impedance and fast transient response without excessive power draw. It serves as a direct pin-compatible upgrade for LM1558 and LM358 designs, offering superior bandwidth and lower noise characteristics suitable for analog signal processing tasks.

Part Context

The LF353 belongs to the LF35x family of dual JFET operational amplifiers known for combining the ease of use of bipolar op-amps with the input characteristics of JFETs. This specific MX variant denotes the surface-mount SOIC packaging option, distinguishing it from through-hole DIP versions like the LF353N or LF353P.

Replacement Considerations

LF353MX/NOPB is a confirmed direct replacement from Texas Instruments. Other compatible alternatives include the LF353DR and LF353M.