LF247DT

Overview

The LF247DT is a high-speed J-FET input quad operational amplifier manufactured by STMicroelectronics. It integrates well-matched, high-voltage J-FET and bipolar transistors within a monolithic integrated circuit structure. 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 of ±22V (44V total) and consumes 1.4mA per four-channel configuration. The output current per channel is rated at 40mA. It is available in a 14-SOIC surface-mount package and functions reliably across an operating temperature range of -40°C to +105°C.

Feature Summary

• High slew rate performance for fast signal processing
• Low input bias and offset currents ensuring precision
• Wide common-mode and differential voltage range
• Internal frequency compensation for stability

Applications

• Signal conditioning circuits
• High-speed data acquisition systems
• Precision instrumentation amplifiers

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to confirm package type and tape/reel specifications. Ensure the component matches the required industrial temperature grade and pinout configuration for your PCB layout. Cross-reference the manufacturer part number with authorized distributor listings to confirm authenticity and current product status before finalizing procurement orders.

Selection Notes

Select this component when high-speed operation combined with low input current is required. The J-FET input stage provides high input impedance suitable for sensitive signal sources. Consider the 14-SOIC package constraints for board space. Verify that the supply voltage requirements align with the system's power rails and that the thermal management supports the specified operating temperature range.

Part Context

The LF247DT belongs to the LF247 family of quad operational amplifiers from STMicroelectronics. This series is designed for applications requiring high speed and precision. The 'DT' suffix typically denotes the specific surface-mount packaging variant within the broader LF247 product line, distinguishing it from other package options like DIP or SOIC variations.

Replacement Considerations

Consult official STMicroelectronics documentation for direct pin-to-pin replacements. Generic equivalents may not match the specific slew rate or input bias current characteristics. Verify compatibility with existing circuit designs before substitution.