LM258PT

Overview

The LM258PT is a dual low-power operational amplifier manufactured by STMicroelectronics, housed in an 8-pin TSSOP surface-mount package. It features a gain-bandwidth product of 1.1 MHz and a slew rate of 600 mV/μs. The device operates on a single supply voltage ranging from 3 V to 30 V or dual supplies from ±1.5 V to ±15 V. Key electrical parameters include a maximum input offset voltage of 5 mV, an input bias current of 150 nA, and a typical common-mode rejection ratio of 85 dB. Each channel can deliver up to 40 mA of output current with a quiescent supply current of 1.2 mA.

Feature Summary

• Dual-channel architecture providing two independent amplifiers within a compact footprint
• Low power consumption suitable for battery-operated applications
• Capable of operating from a single power supply without external compensation

Applications

• General-purpose analog signal processing circuits
• Transducer amplifiers for sensor interface
• Active filter designs

Procurement Notes

Verify the specific suffix 'PT' corresponds to the TSSOP-8 package and tape-and-reel delivery format as indicated by distributor listings. Confirm RoHS compliance status through official documentation. Ensure the ordering part number matches the exact pinout and thermal characteristics required for the target PCB layout.

Selection Notes

Select this component when a dual op-amp solution is required with moderate bandwidth and low power constraints. The TSSOP-8 package offers a smaller footprint compared to DIP variants. Consider the 5 mV input offset voltage specification for precision requirements. Verify that the 40 mA output drive capability meets the load requirements of the application circuit.

Part Context

This part belongs to the LM258 family of dual operational amplifiers. It shares functional similarities with other industry-standard dual op-amps but is distinguished by its specific packaging and STMicroelectronics manufacturing process. The PT suffix denotes the thin-shrink small-outline package variant.

Replacement Considerations

Check for direct pin-compatible alternatives such as the LM258D (SOIC-8) or LM258N (DIP-8) if package changes are permissible. Verify electrical parameter equivalence before substitution.