LM358ADG4 - Dual 700kHz Op Amp, 8-SOIC | Texas Instruments
MPN： LM358ADG4 ✓ 啟用中LM358ADG4 概覽
An operational amplifier, commonly called an op amp, is a high-gain differential amplifier used to amplify the difference between two input voltages. It belongs to the amplifier IC hierarchy and supports common functions such as voltage buffering, signal amplification, active filtering, comparators, and analog signal conditioning. Because the LM358ADG4 contains two independent amplifiers in one package, it can reduce board area in dual-channel control, measurement, or interface circuits.
Key features include two amplifier circuits, a 700 kHz gain-bandwidth product, a 0.3 V/µs slew rate, and a maximum specified supply voltage of 16 V. The 2 mV input offset voltage is suitable for general signal conditioning, although it is substantially less precise than the offset characteristics expected from dedicated precision amplifiers. Its SOIC-8 surface-mount package supports automated assembly and compact industrial, consumer, and instrumentation designs.
The LM358 family architecture combines two general-purpose amplifiers with a single 8-pin package. Its bandwidth supports low-frequency amplification, buffering, filtering, and threshold-detection functions, while the 0.3 V/µs slew rate limits how quickly the output can follow larger input-driven voltage changes. Designers should account for that limitation in pulse, waveform, or feedback applications and keep operating points within the manufacturer’s electrical limits.
Typical applications include sensor-signal conditioning, low-frequency active filters, industrial control interfaces, audio preamplifier stages, transducer amplifiers, and dual-channel threshold detection. Two amplifiers in one package are especially useful when a design needs matched circuit topology in two channels, provided both sections operate within compatible common-mode and output-swing conditions.
For new layouts, follow the manufacturer’s pin-assignment and application guidance exactly, including bypass placement around the power supply. Keep feedback paths short, route sensitive input and output traces away from switching nodes, and verify stability with the actual source impedance, load, and compensation network. The SOIC-8 footprint also requires attention to thermal dissipation when either amplifier operates continuously near its output-current limit.
This product page combines the verified LM358ADG4 specifications, package information, practical application guidance, comparison parameters, and confirmed pin-compatible alternatives. It is intended to help engineers evaluate whether this general-purpose dual operational amplifier fits a board-level signal-conditioning requirement before completing laboratory validation.
直接替換替代品，適用於 LM358ADG4 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： LM358ADG4 （相同外形與佔位） — 差異在於 Package, Slew Rate.
LM358BIDR
✅ 直接替換📋 參考替代品（不在目錄中）
LM358ADG4 最大額定值與電氣特性
| Amplifier Type | General Purpose |
| Number of Circuits | 2 circuits |
| Gain-Bandwidth Product | 700 kHz |
| Slew Rate | 0.3 V/µs |
| Input Offset Voltage | 2 mV |
| Maximum Supply Voltage | 16 V |
| 封裝 | 8-SOIC (0.154 inch, 3.90 mm width) |
| 安裝類型 | Surface mount |
| Packaging | Tube |
| Manufacturer | Texas Instruments |
| Description | Industry-Standard Dual Operational Amplifiers |
LM358ADG4 腳位配置
| 腳位 1 | OUT1 — Amplifier 1 output |
| 腳位 2 | IN1- — Amplifier 1 inverting input |
| 腳位 3 | IN1+ — Amplifier 1 non-inverting input |
| 腳位 4 | V- — Negative supply connection |
| 腳位 5 | IN2+ — Amplifier 2 non-inverting input |
| 腳位 6 | IN2- — Amplifier 2 inverting input |
| 腳位 7 | OUT2 — Amplifier 2 output |
| 腳位 8 | V+ — Positive supply connection |
典型應用
LM358ADG4 適用於 6 應用s: Sensor Signal Conditioning, Industrial Control Signal Conditioning, Audio Preamplifier Stage, Active Filtering and Buffering, Transducer and Bridge Amplification, Threshold and Comparator Circuit.
Sensor Signal Conditioning
The LM358ADG4 fits general-purpose sensor conditioning because its two amplifiers can process complementary channels within one 8-SOIC package. The 700 kHz gain-bandwidth product handles modest-frequency signals, while the 0.3 V/µs slew rate supports non-extreme transients. A 2 mV input offset may require calibration for low-level sensors, so the design should evaluate sensor output range, input bias current, common-mode limits, and output swing before choosing the gain.
推薦
Industrial Control Signal Conditioning
The LM358ADG4 can condition low-frequency control signals in industrial equipment because it provides two general-purpose amplifier channels, a 700 kHz gain-bandwidth product, and operation with supply ratings up to 16 V. One channel may amplify a sensor or command signal while the other handles feedback or an auxiliary monitor. Engineers should verify common-mode range, output swing, load capability, noise behavior, and stability against the actual industrial signal source and grounding arrangement.
推薦
Audio Preamplifier Stage
The LM358ADG4 is applicable to general audio preamplification and impedance-conversion stages where two channels benefit from one package. Its 700 kHz gain-bandwidth product and 0.3 V/µs slew rate are appropriate for many audio-band signals, while the 2 mV input offset can contribute to low-level channel imbalance. Confirm the input noise, bias current, output swing, load impedance, and supply headroom in the final single-supply audio circuit.
推薦
Active Filtering and Buffering
The LM358ADG4 can implement active filters and voltage buffers because each channel provides general-purpose amplification with a 700 kHz gain-bandwidth product. The two-section package supports paired filtering, where both amplifiers use similar components and topology. The 0.3 V/µs slew rate constrains large-signal response, and the 2 mV offset may influence low-level filter accuracy, so simulation should include source impedance, load capacitance, component tolerances, and the intended passband.
推薦
Transducer and Bridge Amplification
The LM358ADG4 is suitable for general transducer amplification when the signal bandwidth is modest and two amplifier channels are useful. Its 2 mV input offset and 700 kHz gain-bandwidth product support many low-frequency sensing arrangements, but input bias current can create error with high-impedance sources. Confirm the input common-mode range, output swing, input bias current, noise, and sensor excitation requirements, and verify operation across the full process or temperature range.
推薦
Threshold and Comparator Circuit
The LM358ADG4 can operate as a threshold detector or comparator in low-speed control and monitoring systems. Its 2 mV input offset influences the switching threshold, while the 700 kHz gain-bandwidth product and 0.3 V/µs slew rate determine response speed and overshoot. Use the device only when its input and output behavior meets the system requirements, and validate noise immunity, saturation recovery, output logic levels, and reference accuracy in the final circuit.
推薦
推薦產品摘要
工程參考資料，適用於 LM358ADG4 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | LM358BIDR | LM358MX | LM358DRG3 |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 8-SOIC | 8-SOIC - same | 8-SOIC - same | 8-SOIC - same |
主要差異化特點
- Two general-purpose amplifiers in one 8-SOIC package (對比LM358BIDR)
- Defined 700 kHz bandwidth and 0.3 V/µs slew rate (對比LM358MX)
- Established 2 mV input offset specification (對比LM358DRG3)
設計說明
Route the two inverting inputs directly to their feedback components and keep each feedback loop compact. The 700 kHz gain-bandwidth product allows operation at moderate frequencies, but long feedback traces can add parasitic capacitance and alter stability. Place input and output decoupling components close to the associated pins, use a continuous ground plane where practical, and keep sensitive input traces away from power-converter nodes and high-current return paths.
Design the supply rail around the 16 V maximum rating and account for output swing rather than assuming the output can reach either rail exactly. Decouple the V+ and V− connections according to the manufacturer application guidance, and verify the selected capacitor voltage rating against the maximum rail and transient conditions. Because both amplifiers share one package, their combined dissipation and common supply current must be checked during worst-case dual-channel operation.
Do not substitute solely because a candidate uses an 8-SOIC package. Before replacing LM358ADG4, verify pin functions, supply range, input common-mode limits, output swing, input bias current, offset voltage, temperature grade, output current, noise, and slew behavior. The 2 mV offset and 0.3 V/µs slew rate can be acceptable in general signal conditioning but inappropriate in precision or fast transient systems.
Estimate the total package dissipation from both amplifier outputs rather than one channel alone. The 8-SOIC package has limited copper area, so sustained high output current can make PCB thermal performance important. Use the manufacturer thermal information with the actual copper area, airflow, ambient temperature, and worst-case load. For low-power general-purpose operation, normal copper spreading is usually sufficient, but this must be confirmed by thermal analysis.
合規資訊
No definitive compliance statements were identified for LM358ADG4. Automotive qualification is not indicated for this general-purpose ordering code.