LF247D

Overview

The LF247D is a J-FET input quad operational amplifier manufactured by STMicroelectronics. It integrates well-matched high-voltage J-FET and bipolar transistors in a monolithic IC. The device features a typical slew rate of 16V/µs, low input bias current, and low offset voltage temperature coefficient. It operates with a supply voltage range up to 44V and consumes 1.4mA per four channels. The unit provides 40mA output current per channel and includes internal frequency compensation and output short-circuit protection.

Feature Summary

• High-speed J-FET input stage with high input impedance
• Wide common-mode and differential voltage range extending up to VCC+
• Internal frequency compensation ensuring latch-up free operation
• Output short-circuit protection for enhanced reliability

Applications

• High-speed signal processing circuits
• Precision instrumentation amplifiers
• Video signal conditioning
• Data acquisition systems requiring low input bias current

Procurement Notes

Verify the specific package variant and tape/reel configuration against the official datasheet before ordering. Confirm that the operating temperature range meets the application requirements. Ensure compatibility with existing PCB footprints for the SOIC-14 package. Cross-reference the manufacturer part number with authorized distributor listings to avoid counterfeit components.

Selection Notes

Select this component when high slew rate and low input bias current are critical. It is suitable for applications requiring wide common-mode voltage ranges. Consider the 14-SOIC package constraints for board space. Evaluate power consumption needs as it draws 1.4mA for the four-channel configuration.

Part Context

The LF247D belongs to the LF247 family of J-FET quad operational amplifiers from STMicroelectronics. This series is designed for applications demanding high speed and precision. The device utilizes monolithic integration of J-FET and bipolar technologies to achieve performance characteristics suitable for analog signal processing tasks.

Replacement Considerations

Check for pin-compatible alternatives within the same family or similar J-FET op-amp series. Verify electrical parameters such as slew rate and input bias current match the design requirements. Ensure the replacement supports the required supply voltage and package type.