LM392M/NOPB

Overview

The LM392M/NOPB is a dual-channel low-power operational amplifier and voltage comparator manufactured by Texas Instruments. It integrates a precision op-amp and a high-speed comparator within a single package, offering a cost-effective solution for mixed-signal applications. The device operates on a supply voltage range of 3V to 32V and features a CMOS/TTL compatible output stage. Packaged in an 8-pin SOIC (MSOP) format, it supports through-hole or surface-mount installation depending on the specific variant suffix, with a standard operating temperature range from 0°C to 70°C.

Feature Summary

• Integrates a low-power operational amplifier and a voltage comparator in a single compact package
• Features a CMOS/TTL compatible output stage for direct interfacing with digital logic circuits
• Supports a wide single-supply voltage range from 3V to 32V
• Designed for general-purpose analog signal processing and threshold detection tasks

Applications

• Threshold detection circuits requiring both amplification and comparison functions
• Industrial control systems utilizing mixed analog-digital signal processing
• Power supply monitoring and protection circuits
• Sensor signal conditioning and interface modules

Procurement Notes

Verify the exact package type against the ordering suffix, as 'M' typically denotes SOIC while other suffixes may indicate different form factors. Confirm RoHS compliance status via the manufacturer's current datasheet, as NOPB indicates lead-free construction but packaging variations exist. Ensure the selected variant matches the required thermal performance and pinout configuration for the target PCB layout.

Selection Notes

Select this component when a design requires both signal amplification and voltage comparison within a single footprint to minimize board space. Consider the CMOS/TTL output compatibility if driving digital inputs directly without additional buffering. Evaluate the power supply voltage range to ensure it aligns with the system's available rails, noting the 3V minimum and 32V maximum limits for reliable operation.

Part Context

The LM392 series belongs to Texas Instruments' portfolio of mixed-signal analog devices, combining linear and switching functionalities. This specific part represents a legacy design optimized for cost-sensitive applications where dual functionality reduces component count. It serves as a bridge between pure operational amplifiers and dedicated comparators, offering versatility in circuit design for industrial and consumer electronics.

Replacement Considerations

Direct substitutes include the LM392N/NOPB for PDIP-8 packages and LM392MX/NOPB for SOIC variants. Verify pinout compatibility and electrical specifications before substitution, as package dimensions differ significantly between DIP and SOIC formats.