LM358AP - Dual 30V 700kHz Op Amp | Texas Instruments
MPN： LM358AP ✓ 啟用中LM358AP 概覽
An operational amplifier, or op amp, is an analog integrated circuit that amplifies the voltage difference between its two inputs while using negative feedback to perform a defined gain function. The LM358 belongs to the dual operational amplifier, voltage-feedback amplifier, analog IC, and semiconductor hierarchy. Its two internally compensated channels make it suitable for sensor interfaces, transducer amplifiers, buffer stages, and general-purpose analog control circuits without requiring a separate single amplifier package.
The principal performance figures are a 700 kHz gain-bandwidth product, 0.3 V/µs slew rate, and approximately 2 mV input offset voltage. These characteristics make the LM358AP suitable for low-to-moderate frequency precision analog circuits. Its dual configuration provides channel-to-channel integration, while the wide 3 V to 30 V supply range allows operation from a single low-voltage rail or from split supplies. The device is available in an 8-pin PDIP package for through-hole PCB assembly.
Each channel uses a differential input stage, voltage-gain stage, and output stage, with internal compensation providing stable operation without an external compensation capacitor. Although the device is commonly associated with single-supply operation, its common-mode input range does not extend all the way to the positive supply rail. Designers should therefore verify the signal excursion against the common-mode limits before using the amplifier directly at the top of a low-voltage supply.
Typical uses include low-current sensor conditioning, buffered control inputs, audio preamplifier stages, active filtering, and general-purpose instrumentation. In a sensor interface, the LM358AP can amplify a small transducer signal while its dual channels support a second stage such as an inverter, buffer, or active filter. The 700 kHz bandwidth provides ample margin for slow sensor signals and low-frequency control loops.
PCB layout should keep input traces short, place bypass capacitance near the supply pin, and route output returns independently from sensitive input paths. Although the PDIP package is through-hole and easy to prototype, its lead pitch requires adequate clearance from adjacent components. Input and output nodes should also be kept apart to reduce parasitic feedback and oscillation risk.
This product page combines the LM358AP electrical characteristics, package details, application guidance, compatible replacements, and practical PCB considerations in a format that helps engineers evaluate the device before committing a through-hole design to production.
直接替換替代品，適用於 LM358AP — 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： LM358AP （相同外形與佔位） — 差異在於 Input Offset Voltage, Operating Temperature Range, Package, Gain-Bandwidth Product, Mounting Type.
LM2904P3
✅ 直接替換聯絡詢價
查看資料表 →LM258AP
✅ 直接替換聯絡詢價
查看資料表 →LM358AP
✅ 直接替換聯絡詢價
查看資料表 →LM358AP 最大額定值與電氣特性
| Amplifier Type | Dual general-purpose operational amplifier |
| Number of Amplifier Channels | 2 channels |
| Maximum Supply Voltage | 30 V |
| Operating Supply Voltage Range | 3 V to 30 V |
| Split-Supply Input Voltage Range | -15 V to +15 V |
| Gain-Bandwidth Product | 700 kHz |
| Slew Rate | 0.3 V/µs |
| Input Offset Voltage | 2 mV |
| 工作溫度範圍 | 0°C to 70°C |
| Package Type | PDIP-8, through-hole |
| 腳位數 | 8 pins |
| 安裝類型 | Through-hole |
| Tube Quantity | 50 units per tube |
| RoHS 狀態 | Compliant |
| 生命週期狀態 | Active |
LM358AP pdip-8, through-hole 腳位配置指南
LM358AP（pdip-8, through-hole 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： LM358AP.
請參閱 資料表 以查看完整腳位配置。
典型應用
LM358AP 適用於 6 應用s: Sensor Signal Conditioning, Industrial Control Inputs, Audio Preamplification, Active Filtering and Buffering, Power Supply Feedback Conditioning, Test and Measurement Front Ends.
Sensor Signal Conditioning
The LM358AP suits low-frequency sensor interfaces because its 700 kHz gain-bandwidth product and 0.3 V/µs slew rate provide useful response margin beyond the bandwidth of many resistive sensors. A typical circuit uses one channel to amplify the sensor voltage and the second channel for buffering or active filtering. The 3 V to 30 V supply range supports both low-voltage portable instrumentation and higher-voltage industrial controls, but the input common-mode range must remain within the manufacturer limits. Ceramic bypass capacitance should be placed close to pin 8, with the supply return connected cleanly to pin 4.
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Industrial Control Inputs
LM358AP can condition low-level control or feedback signals in industrial control equipment while operating from a supply chosen within its 3 V to 30 V range. The two independent channels allow one amplifier to buffer a command input while the other amplifies a feedback voltage. Its 700 kHz bandwidth is appropriate for slow process-control loops rather than high-bandwidth servo systems. In a control board, keep the two channels electrically separated where possible, place the bypass capacitor near the supply pin, and avoid routing feedback from the output pins directly alongside input traces.
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Audio Preamplification
The LM358AP can provide a basic audio preamplifier stage for microphone-level or line-level signals when the operating bandwidth and noise requirements are modest. Its 0.3 V/µs slew rate allows full-scale output changes at frequencies below the 700 kHz gain-bandwidth limit, while the dual package can implement gain and filtering in separate channels. The amplifier must operate with adequate input and output common-mode headroom on a single 5 V supply. Decoupling and grounded input returns are important because audio preamplifiers can expose input-bias-current noise and power-supply ripple.
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Active Filtering and Buffering
LM358AP is practical for first-order or low-order active filters and for buffering sources with high output impedance. The dual amplifier provides separate active-filter stages without requiring two packages, and the 700 kHz bandwidth leaves useful range above typical audio, instrumentation, and industrial-control frequencies. Component tolerances directly influence the filter response, so use stable resistors and capacitors and simulate the final topology before fabrication. Place feedback components close to the relevant channel and maintain a direct ground return to minimize common-impedance coupling.
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Power Supply Feedback Conditioning
LM358AP can amplify a scaled power-supply feedback voltage for comparison against a reference in noncritical monitoring and control designs. Its wide 30 V maximum supply and approximately 2 mV offset make it useful for low-level feedback signals, although offset and drift should be checked against the required measurement accuracy. The second channel can monitor another rail or provide an inverter. Because the device is a linear amplifier rather than a switching regulator, it should sit outside high-current power paths and use separate input filtering to reject switching ripple.
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Test and Measurement Front Ends
The LM358AP can form a basic input buffer or gain stage for laboratory and industrial measurement equipment operating below the amplifier's 700 kHz bandwidth. Its dual-channel configuration supports an input buffer followed by gain, inversion, or offset adjustment. For precision measurements, verify input bias current, input offset voltage, and drift against the measurement specification because the general-purpose architecture is not automatically suitable for the highest-resolution instruments. Use short, guarded input traces, a quiet ground plane, and local supply bypassing to minimize measurement error.
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推薦產品摘要
工程參考資料，適用於 LM358AP — 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 | LM2904P3 | LM258AP | LM358AP | LM358 | LM358 |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | STMicroelectronics | 3PEAK | SGMC |
| Package | PDIP-8 | PDIP-8 | PDIP-8 | PDIP-8 | PDIP-8 | PDIP-8 |
| Amplifier Configuration | Dual operational amplifier | Dual operational amplifier | Dual general-purpose operational amplifier | Dual operational amplifier | Dual operational amplifier | Dual operational amplifier |
| Number of Pins | 8 pins | 8 pins | 8 pins | 8 pins | 8 pins | 8 pins |
主要差異化特點
- Wide operating supply range in a dual amplifier (對比LM2904P3)
- Defined commercial-temperature operating range (對比LM258AP)
- Established Texas Instruments dual op-amp configuration (對比LM358 from 3PEAK)
設計說明
Place the supply bypass capacitor immediately between pin 8 and pin 4, with the ground connection returned directly to the device ground. Keep both input traces short and route them away from the output traces and supply-capacitor ground path. In a PDIP-8 layout, maintain adequate clearance between the 0.1-inch lead pitch and adjacent components, while confirming that the analog signal board does not share high-current switching paths.
Do not assume that the input common-mode range reaches the positive supply rail. The LM358AP supports single-supply operation, but the usable input range remains limited, particularly on a 3 V or 5 V rail. Verify the minimum and maximum signal levels at both amplifier inputs under load, and include adequate output headroom for the selected gain and waveform.
Use negative feedback to define the closed-loop gain and avoid unusually high closed-loop gain because the 700 kHz gain-bandwidth product leaves less stability margin as gain rises. Keep feedback components close to the relevant channel, use low-value resistors where practical to reduce parasitic capacitance effects, and probe the output with a short ground lead to distinguish circuit instability from measurement artifacts.
Estimated: with a 12 V supply, a 5 V output, and a 1 mA load, the LM358AP dissipation is approximately 7 mW using P = (VIN - VOUT) × IOUT. The estimate excludes internal ground-current and output-stage contributions, so use the manufacturer power-dissipation limits for final thermal analysis. The small result indicates that normal low-load operation generally needs no dedicated heatsink.
合規資訊
The manufacturer product information identifies LM358AP as active and RoHS compliant. No separate REACH, lead-free, halogen-free, or conflict-minerals declaration was identified in the cited product records.
