1. One-Sentence Description
The LM358DR is a wide-voltage, low-power, high-precision dual operational amplifier designed for industrial-grade applications. It supports a 3V to 36V power supply range, integrates EMI/RF filtering, and is suitable for sensor signal conditioning, power management, and motor control scenarios.
2. Core Features
Wide Power Adaptability: 3V to 36V single-supply or ±1.5V to ±18V dual-supply operation, compatible with digital system standard voltages (e.g., 5V/12V).
Ultra-Low Power Consumption: Only 300μA quiescent current per channel (typical value), extending battery life.
High-Performance Metrics:
Unity-gain bandwidth: 1.2MHz (B/BA versions)
Slew rate: 0.5V/μs (B/BA versions)
Input offset voltage: ±3mV max (A/B versions) or ±2mV (BA version)
Anti-Interference Design: Built-in radio frequency (RF) and electromagnetic interference (EMI) filters for harsh electromagnetic environments.
Flexible Packaging: Available in SOIC, TSSOP, VSSOP, SOT23-8, and other packages, supporting surface mount and through-hole installation.
High Reliability: Certified to MIL-PRF-38535 standards, with comprehensive parameter testing (except for non-customized products).
3. Core Technical Specifications
| Parameter | LM358DR (B/BA Versions) | Typical Application Advantages |
| Supply Voltage | 3V–36V | Compatible with multi-power systems for wide dynamic range signal processing |
| Input Offset Voltage | ±2mV (BA version) | Low-error signal amplification for precision instruments |
| Bandwidth (Unity Gain) | 1.2MHz | Real-time processing of audio/sensor signals |
| Quiescent Current | 300μA/channel | Reduces system power consumption and extends battery life |
| Common-Mode Input Range | GND to V+−1.5V | Supports near-ground sensing to avoid ground loop interference |
4. The Story Behind the Chip
The LM358DR is a modern iteration of Texas Instruments’ (TI) classic LM358/2904 operational amplifiers, incorporating the following innovations:
Process Innovation: Uses modern CMOS technology to balance speed and power consumption, reducing quiescent current by 50% compared to previous generations.
Functional Expansion: The new BA version further optimizes input offset voltage to ±2mV (25℃) to meet high-precision requirements.
Compatibility Design: Maintains industry-standard pinout for direct replacement of older models, reducing design migration costs.
5. Design Philosophy
The core design philosophy of the LM358DR revolves around “high efficiency, strong robustness, and ease of use”:
Low Power Priority: Optimizes current consumption for IoT and portable devices.
Enhanced Anti-Interference: Integrates EMI/RF filters to withstand high-frequency noise in industrial environments.
Flexible Configuration: Supports rail-to-rail output (close to power rails) and wide common-mode input for versatile signal chain adaptation.
Thermal Management Optimization: Small packages (e.g., SOT23-8) with low thermal resistance design for compact space heat dissipation.
6. Application Scenarios
The LM358DR is widely used in the following fields:
Industrial Automation: Motor control (AC/DC/BLDC), PLC signal conditioning, sensor interfaces.
Consumer Electronics: Feedback circuits for power adapters, overvoltage protection for battery chargers.
Medical Equipment: ECG/EEG signal amplification, low-noise physiological parameter detection.
Automotive Electronics: Battery management systems (BMS), headlight dimming control, reverse radar signal processing.
Communication Equipment: Analog front-end signal conditioning, line drivers.
7. Unique Advantages
Extreme Cost-Effectiveness: Combines high precision (±2mV offset voltage in BA version) with low cost, replacing dedicated precision op-amps.
Ultra-Wide Power Window: Supports 3V micro-power operation up to 36V high-voltage scenarios, adapting to complex power environments.
Anti-Interference Benchmark: Integrated EMI filters reduce the need for external filtering components and shorten R&D cycles.
Full-Temperature Stability: Operating temperature range of −40℃ to 125℃ (BA version) for extreme environmental requirements.
8. What Engineers Must Know When Selecting
Key Parameter Matching:
Supply voltage must exceed the input signal range by +1.5V (e.g., input signals should not exceed ±1.8V with 3.3V supply).
Ensure bandwidth and slew rate meet application requirements (e.g., 1.2MHz bandwidth for audio).
Packaging and Heat Dissipation: Prioritize TO-92 or SOIC packages for high-power scenarios; choose SOT23-8 for small form factors.
Anti-Interference Design: High-frequency applications require external filter capacitors to reduce parasitic oscillation risks.
Replacement Compatibility: Directly replace LM358/LM2904 in original designs (BA version may require offset voltage compensation adjustments).
Conclusion: The LM358DR, with its wide voltage range, low power consumption, high precision, and strong anti-interference capabilities, has become an “all-around player” in industrial and consumer electronics. Whether for precision sensing or rugged industrial environments, it delivers reliable performance at a high cost-to-performance ratio, making it an indispensable “Swiss Army knife” operational amplifier in engineers’ toolkits.
Contact:
Sylvia Xu | ECSource Components Co.,Limited
Top 10 Test Laboratory Distributors in Asia.
D-U-N-S Number:655918890 | ISO90001 Certificated Company
Phone/Whatsapp: 0086-19806586673
Email:sylvia@ecsource.net
Line Card : FPGA, RF, MEMORY,CONNECTOR,Power
