LM1458CN

Overview

The LM1458CN is a dual general-purpose operational amplifier manufactured by Fairchild Semiconductor. It features internal frequency compensation and short-circuit protection, requiring no external components for stability. The device operates within a supply voltage range of ±6V to ±18V (12V to 36V total) and supports an operating temperature range of 0°C to +70°C. Key electrical characteristics include a typical gain-bandwidth product of 1 MHz, a slew rate of 0.5 V/µs, and a maximum input offset voltage of 10 mV. It provides high common-mode voltage rejection and eliminates latch-up issues.

Feature Summary

• Internal frequency compensation eliminates the need for external stabilizing components
• Integrated short-circuit protection safeguards against output faults
• High common-mode voltage range with no latch-up behavior
• Low power consumption suitable for general feedback applications

Applications

• Voltage follower circuits
• Integrator configurations
• Summing amplifiers
• General feedback applications

Procurement Notes

Verify that the ordering suffix 'CN' specifically denotes the commercial grade variant with a 0°C to +70°C operating temperature range and 8-DIP package. Confirm manufacturer lineage as Fairchild Semiconductor or authorized successor entities. Ensure documentation matches the Rev 1.0.1 datasheet specifications for absolute maximum ratings and electrical characteristics to guarantee functional compatibility.

Selection Notes

Select this component when a dual-channel solution is required without external compensation parts. It is suitable for applications demanding wide supply voltage flexibility and robust common-mode performance. Consider the 8-DIP package constraint for through-hole assembly requirements. Evaluate the 0.5 V/µs slew rate against signal speed requirements before implementation in high-frequency designs.

Part Context

This part belongs to the LM1458/LM1458C series of dual operational amplifiers. The 'LM1458' designation typically refers to the military/industrial grade, while the 'LM1458C' indicates the commercial grade. The LM1458CN represents the commercial version packaged in an 8-pin Dual In-line Package (DIP). It shares core architectural similarities with other members of the family but differs in specified temperature ranges and packaging options.

Replacement Considerations

Direct pin-compatible substitutes include the LM1458N (military grade) and LM1458CM (commercial SOP). Verify that replacement devices maintain identical pinout configurations and meet the specific electrical limits defined in the original datasheet.