LF353DT

Overview

The LF353DT is a dual J-FET input operational amplifier manufactured by STMicroelectronics in an 8-SOIC surface-mount package. It features a typical slew rate of 16 V/µs and a gain-bandwidth product of 4 MHz. The device operates with a supply voltage range from 6 V to 36 V and draws 1.4 mA of supply current for both channels. Key electrical specifications include an input bias current of 20 pA, an input offset voltage of 3 mV, and a maximum output current per channel of 40 mA. It functions within a temperature range of 0°C to 70°C.

Feature Summary

• High-speed J-FET input stage providing high input impedance
• Internal frequency compensation eliminates external component requirements
• Output short-circuit protection ensures device safety during fault conditions
• Latch-up free operation enhances reliability under transient stress

Applications

• General-purpose AC switching circuits requiring phase angle control
• High-speed signal processing applications utilizing J-FET inputs
• Battery-powered systems benefiting from low power consumption characteristics

Procurement Notes

Verify the specific ordering suffix to confirm the tape and reel packaging configuration, as variations exist between cut tape and standard reel quantities. Ensure the selected variant matches the required 8-SOIC package dimensions and lead finish specifications for your PCB assembly process. Confirm RoHS compliance status aligns with your environmental regulatory requirements before finalizing procurement orders.

Selection Notes

Select this component when designing circuits that require high input impedance combined with moderate speed performance. The J-FET input architecture minimizes loading effects on high-impedance source signals compared to bipolar alternatives. Consider the 8-SOIC package constraints for thermal management and board space availability relative to other available packages in the LF353 family.

Part Context

This part belongs to the LF353 series of dual operational amplifiers produced by STMicroelectronics. The series utilizes monolithic integration of matched high-voltage JFET and bipolar transistors. The LF353DT designation specifically identifies the dual-channel variant housed in the 8-SOIC surface-mount package, distinguishing it from single-channel or quad-channel configurations within the same product line.

Replacement Considerations

ADA4062-2ARZ is a documented similar substitute part number available from Analog Devices Inc.