LM358-MR 1MHZ High Voltage Bipolar Opamp

Product Overview: Gainsil LM358-MR vs. TI LM358DGKR

The Gainsil LM358-MR is a dual-channel general-purpose operational amplifier designed for cost-sensitive and space-constrained applications while offering solid performance in low-voltage and low-power systems. The LM358DGKR by Texas Instruments is a widely adopted general-purpose op amp with a similar architecture. While both parts share baseline compatibility, the LM358-MR stands out in terms of lower quiescent current, wider temperature range, and tighter input offset voltage, offering stronger performance in industrial and automotive-grade designs.

Quiescent Current

The LM358-MR features a typical quiescent current of 100 μA per amplifier, which is especially beneficial for low-power designs, such as portable, battery-powered systems.

In contrast, the LM358DGKR operates with a higher typical quiescent current of 500 μA per amplifier, resulting in increased standby power consumption.

Advantage: The significantly lower current consumption of the LM358-MR enhances energy efficiency and extends battery life in portable applications.

Input Offset Voltage

The Gainsil LM358-MR offers a typical input offset voltage of 1 mV, ensuring higher signal fidelity and stability across varying temperatures and supply voltages.

The LM358DGKR, on the other hand, has a typical input offset voltage around 2–3 mV, which may introduce more error in high-precision applications.

Advantage: The LM358-MR provides superior precision in analog front-end circuits and sensing applications.

Operating Temperature Range

The LM358-MR is qualified for a –40°C to +125°C industrial/automotive-grade temperature range, making it ideal for harsh and thermally dynamic environments.

TI’s LM358DGKR supports a more limited operating range of 0°C to +70°C, targeting primarily consumer-grade applications.

Advantage: The LM358-MR offers extended reliability and robustness under wide environmental conditions, making it suitable for automotive, industrial, and outdoor systems.

Supply Voltage Range

The LM358-MR operates with a single supply from 3 V to 36 V or dual supply from ±1.5 V to ±18 V, giving designers flexibility across a wide variety of system voltages.

The LM358DGKR is similarly rated for 3 V to 32 V, slightly narrower in upper supply limit.

Advantage: The broader supply capability of the LM358-MR enables compatibility with higher-voltage systems without sacrificing performance.

Output Swing and Driving Capability

Both the LM358-MR and LM358DGKR feature rail-to-rail output swing and can source/sink moderate output currents for driving resistive or capacitive loads. Performance is comparable in this respect.

Packaging and Assembly

The LM358-MR is supplied in a standard 8-pin SOP package, supporting robust solderability and ease of use in both automated and manual PCB assembly lines.

The LM358DGKR comes in an 8-pin VSSOP package, which is more compact but less robust in high-reliability soldering environments.

Advantage: The SOP package of the LM358-MR offers better thermal performance and is widely supported in industrial-grade manufacturing.

Conclusion

In summary, Gainsil’s LM358-MR provides key benefits over the Texas Instruments LM358DGKR, including:

• 80% lower quiescent current

• Lower input offset voltage for improved accuracy

• Wider operating temperature range (–40°C to +125°C)

• Broader power supply range

• Industrial-grade SOP package with better thermal characteristics

These attributes make the LM358-MR an ideal choice for designers requiring high reliability, power efficiency, and precise signal performance in automotive, industrial, and portable systems.