LM148J/883/MPGD

Overview

The LM148J/883/MPGD is a military-grade, quad operational amplifier manufactured by Texas Instruments. It features four independent, high-gain, internally compensated amplifiers with performance characteristics equivalent to the standard LM741. The device supports a supply voltage range of ±5V to ±18V and operates within a temperature range of -55°C to +125°C. Key electrical parameters include a gain-bandwidth product of 1 MHz, a slew rate of 0.5 V/µs, an input offset voltage of 1 mV, and an input bias current of 30 nA. It utilizes a CDIP-14 ceramic dual in-line package.

Feature Summary

• Provides four independent high-gain operational amplifiers with internal frequency compensation.
• Features low power consumption with a total supply current comparable to a single LM741.
• Ensures excellent isolation between amplifiers through independent biasing and thermal coupling minimization.
• Includes input and output overload protection mechanisms.

Applications

• Aerospace systems requiring high reliability and radiation-hardened components
• Satellite communication equipment
• Industrial communication interfaces
• Medical devices demanding stable analog signal processing

Procurement Notes

Verify the specific suffix MPGD against official Texas Instruments documentation to confirm exact military qualification standards and lot traceability requirements. Ensure the CDIP-14 ceramic package matches your PCB footprint and mounting constraints. Confirm that the -55°C to +125°C operating temperature range aligns with your system's environmental specifications before finalizing procurement.

Selection Notes

Select this component when a quad configuration is required without sacrificing the individual performance metrics of a standard 741 op-amp. It is suitable for designs needing low input offset voltage and high common-mode rejection in a compact form factor. Consider the CDIP-14 package if through-hole mounting and high thermal stability are necessary for the application environment.

Part Context

The LM148 series represents a quad version of the classic LM741 operational amplifier, offering higher packaging density. The 'J' designation indicates a military temperature range, while the '/883' suffix signifies compliance with MIL-PRF-38535 standards for integrated circuits. This family allows designers to replace multiple discrete 741 units with a single chip, reducing board space and improving matching characteristics between channels.

Replacement Considerations

Publicly confirmed substitute part numbers include LM148J, LM148N, and LM348N. Verify pin compatibility and electrical parameter tolerances before substitution.