The LM358DR is an industry-standard dual operational amplifier from Texas Instruments, consisting of two independent, high-gain, internally frequency-compensated op-amps in a single package . It is specifically designed to operate from a single power supply over a wide range of voltages, making it highly versatile for various analog applications.
A key feature of the LM358DR is that its common-mode input voltage range includes ground, enabling direct sensing near ground potential even when operating from a single supply . The output voltage can also swing to ground, simplifying interface designs with logic systems . For dual-supply applications, it supports split supplies ranging from ±1.5V to ±16V .
The device features internally frequency compensation, eliminating the need for external components to ensure stability at unity gain . With a low supply current drain (approximately 350µA per channel) that is independent of the supply voltage magnitude, it is well-suited for battery-powered equipment .
The “DR” suffix indicates:
Applications
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Sensor Signal Conditioning – Amplification and filtering for temperature, pressure, and photoelectric sensors
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Power Supply Management – Overvoltage/undervoltage protection circuits, current sensing, and reference voltage generation
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Audio Equipment – Preamplifiers, active filters, and general audio signal processing
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Active Filters – Low-pass, high-pass, and band-pass filter circuits
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Transducer Amplifiers – Interface circuits for various transducers and DC gain blocks
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Voltage Followers (Buffers) – Impedance matching and signal buffering
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Battery-Powered Devices – Low quiescent current makes it suitable for portable and energy-efficient designs
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Instrumentation Amplifiers – Precision measurement and monitoring systems
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Comparator Circuits – General-purpose voltage comparison applications
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Automotive Electronics – Engine control units (ECU), vehicle sensor interfaces, battery management systems
Note: The LM358DR is an active, in-production device from Texas Instruments . For new designs, the enhanced version (LM358B and LM2904B) offers improved specifications including lower offset voltage (3mV max) and lower quiescent current (300µA per channel) . For industrial temperature range applications (-40°C to +105°C), consider the LM2904 series.
