MC1558N

Instrumentation, Op Amps, Buffer Amps Overview

The MC1558N is a dual general-purpose operational amplifier manufactured by STMicroelectronics. It integrates two independent high-performance op-amps on a single chip, functionally equivalent to a pair of standard 741 amplifiers within one package. Key electrical specifications include a maximum input offset voltage of 6000 µV and a bandwidth of 1 MHz. The device utilizes a PDIP-8 package and operates with wide common-mode and differential voltage ranges.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Internal frequency compensation eliminates the need for external components
• Short-circuit protection ensures robust operation under fault conditions
• High input voltage range supports diverse signal levels
• Latch-up free design enhances reliability in varying environments

Instrumentation, Op Amps, Buffer Amps Applications

• Integrator circuits
• Summing amplifiers
• General feedback applications

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the manufacturer marking on the component body to confirm STMicroelectronics origin, as this part number is also produced by other vendors like NXP and Texas Instruments. Ensure the package type matches the required PCB footprint, specifically checking for the DIP-8 configuration. Cross-reference the datasheet revision to confirm compatibility with specific temperature stability and gain requirements for the target analog application.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when a dual operational amplifier solution is required that offers performance comparable to two separate 741 units in a compact form factor. It is suitable for designs needing internal compensation and short-circuit protection without additional external circuitry. Consider the 6000 µV max offset voltage and 1 MHz bandwidth limits to ensure they meet the precision and speed requirements of the specific analog signal processing task.

Instrumentation, Op Amps, Buffer Amps Part Context

The MC1558 series belongs to a family of dual general-purpose operational amplifiers originally derived from the classic 741 topology. While the MC1458 typically denotes the commercial grade version, the MC1558 often indicates an extended temperature range or military-grade variant depending on the specific manufacturer's coding standards. This dual-amp architecture allows designers to reduce board space compared to using discrete single-op-amp packages.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Public confirmed substitute part numbers include MC1458, SA1458, S5558, and N5558.