LF253D

Overview

The LF253D is a dual J-FET operational amplifier manufactured by STMicroelectronics. It features two independent circuits within an 8-SOIC package. The device operates with a supply voltage range of 6 V to 36 V. Key electrical parameters include a slew rate of 16 V/µs, a gain-bandwidth product of 4 MHz, and an input bias current of 20 pA. The output current per channel is rated at 40 mA, with an input offset voltage of 3 mV. It supports a wide operating temperature range from -40°C to +105°C.

Feature Summary

• J-FET input architecture providing low input bias current
• Dual circuit configuration in a compact surface-mount package
• Wide single or split power supply operation capability

Applications

• Precision signal conditioning circuits
• High-impedance sensor interfaces
• Audio pre-amplification stages

Procurement Notes

Verify the specific suffix (e.g., D, DT) against the required packaging format such as tube or tape-and-reel. Confirm the RoHS compliance status and moisture sensitivity level for your assembly process. Ensure the ordering part number matches the exact pinout and thermal characteristics defined in the official datasheet to avoid integration errors.

Selection Notes

Select this component when low input bias current and moderate bandwidth are required. The J-FET input stage suits high-impedance sources better than bipolar inputs. Compare the 4 MHz gain-bandwidth product and 16 V/µs slew rate against application requirements. Consider the 8-SOIC package constraints for PCB layout and thermal management.

Part Context

This device belongs to the LF series of operational amplifiers, which are general-purpose analog components. The 'LF' prefix typically denotes lead-free and commercial/industrial temperature grade variants within STMicroelectronics' linear IC portfolio. It serves as a standard solution for basic analog signal processing tasks.

Replacement Considerations

Check for direct pin-compatible alternatives within the same family, such as the LF353, noting differences in input stage technology if critical. Verify that any substitute maintains the required J-FET input characteristics and package dimensions.