LM358DMR2 Description
The LM358DMR2 is a general-purpose operational amplifier (op-amp) from onsemi, designed for a wide range of analog signal processing applications. This dual-channel op-amp is housed in an 8-MSOP surface-mount package, making it suitable for compact and high-density PCB designs. Despite its obsolescence, the LM358DMR2 remains a reliable choice for engineers due to its robust performance and compatibility with various electronic systems.
LM358DMR2 Features
- Supply Voltage Range: The LM358DMR2 operates with a supply voltage span ranging from 3 V to 32 V, providing flexibility in power supply requirements.
- Gain Bandwidth Product: With a gain bandwidth product of 1 MHz, this op-amp ensures stable and precise signal amplification across a broad frequency spectrum.
- Low Input Bias Current: The low input bias current of 45 nA minimizes the loading effect on the input signal source, making it ideal for high-impedance applications.
- Low Input Offset Voltage: The input offset voltage of 2 mV ensures accurate signal processing by reducing errors in the output signal.
- Dual Channel Design: The LM358DMR2 features two independent operational amplifier channels, each capable of sourcing or sinking up to 40 mA of current, allowing for versatile and efficient signal processing.
- Low Supply Current: Each channel consumes only 800 µA of supply current, contributing to energy-efficient designs.
- Wide Operating Temperature Range: The operational temperature range of 0°C to 70°C makes the LM358DMR2 suitable for a variety of environments, from consumer electronics to industrial applications.
- Surface Mount Packaging: The 8-MSOP package type facilitates surface-mount assembly, enabling compact and reliable PCB designs.
- Moisture Sensitivity Level: The MSL rating of 1 (unlimited) ensures that the LM358DMR2 is suitable for extended storage and handling without the need for special moisture protection.
LM358DMR2 Applications
The LM358DMR2 is well-suited for a variety of applications due to its general-purpose design and robust performance characteristics. Some specific use cases include:
- Signal Conditioning: Ideal for amplifying and conditioning weak signals in sensors, transducers, and other analog signal sources.
- Audio Amplification: Suitable for low-power audio applications, such as headphone amplifiers and small speaker systems.
- Filter Design: Can be used to design active filters for signal processing applications, including low-pass, high-pass, and band-pass filters.
- Transimpedance Amplifiers: Effective in converting current signals to voltage signals, commonly used in photodiode and other current-output sensor applications.
- Power Management: Useful in voltage regulation and power supply circuits due to its wide supply voltage range and low quiescent current.
Conclusion of LM358DMR2
The LM358DMR2 is a versatile and reliable general-purpose operational amplifier that offers a wide range of technical specifications and performance benefits. Despite its obsolescence, it remains a valuable component for engineers working on a variety of analog signal processing applications. Its low input bias current, low input offset voltage, and dual-channel design make it particularly suitable for high-impedance and multi-channel applications. The LM358DMR2's surface-mount packaging and wide operating temperature range further enhance its appeal for modern electronic designs. While newer alternatives may offer advanced features, the LM358DMR2 continues to be a dependable choice for many applications in the electronics industry.