LM358PW - Dual 16-32V Op Amp | Texas Instruments
MPN： LM358PW ✓ 啟用中LM358PW 概覽
An operational amplifier is an analog semiconductor that uses high-gain differential feedback to amplify the difference between two input voltages. The LM358 belongs to the dual operational-amplifier, voltage-feedback, analog IC, and power-management signal-chain hierarchies. Its two channels share common supply pins but otherwise provide independent amplifier functions, allowing one package to implement two signal-processing paths.
The principal advantages of the LM358PW are its dual-channel integration, low-power operation, high gain, broad supply-voltage range, and established industry-standard pin arrangement. The TSSOP-8 footprint saves board area compared with larger dual-op-amp packages, while two channels reduce the component count in designs that require duplicated gain or buffering stages. These characteristics make the device a practical baseline for general-purpose analog designs.
Its architecture is suited to voltage-feedback applications in which the amplifier operates with external negative feedback. The package provides separate inputs and outputs for both channels, while the power terminals are shared. Designers should account for input common-mode limits, output swing, bias current, noise, slew rate, stability, and load capability when setting the operating point; consult the manufacturer datasheet for exact limits and test conditions before finalizing a circuit.
Typical applications include DC signal conditioning in sensor interfaces, closed-loop control for industrial equipment, audio preamplification, analog sensor amplification, and general buffer stages. The two-amplifier configuration is especially useful when a board needs one channel for signal amplification and another for filtering, level shifting, active feedback, or output buffering.
The primary design consideration is circuit stability. Feedback-network values, source and load impedances, output loading, and supply bypass capacitance affect closed-loop performance. Place the required decoupling capacitor close to the supply pins, use short feedback paths, and verify common-mode and output-swing margins across the intended input range. Add input or output protection when external wiring can introduce transients beyond the device ratings.
This product page combines the manufacturer product description, distributor package and catalog information, documented cross-reference candidates, and practical application guidance. It also highlights the distinction between electrically similar devices and true TSSOP-8 drop-in options, helping engineers evaluate footprint compatibility, temperature behavior, supply range, and channel-level performance before redesigning an existing PCB.
直接替換替代品，適用於 LM358PW — 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： LM358PW （相同外形與佔位） — 差異在於 Package, Mounting Type, Product Type.
LM2904PW
✅ 直接替換聯絡詢價
查看資料表 →LM2904P3
✅ 直接替換聯絡詢價
查看資料表 →RC4558Z
✅ 直接替換📋 參考替代品（不在目錄中）
LM358TT
✅ 直接替換📋 參考替代品（不在目錄中）
RC4558
✅ 直接替換📋 參考替代品（不在目錄中）
LM358PW 最大額定值與電氣特性
| Number of Amplifier Channels | 2 circuits |
| Device Type | Dual general-purpose operational amplifier |
| Supply Voltage Range | ±16 V to ±32 V |
| Maximum Total Supply Voltage | 32 V |
| 封裝 | 8-pin TSSOP |
| 腳位數 | 8 pins |
| 安裝類型 | Surface mount |
| Amplifier Architecture | Voltage feedback |
| Power Consumption | Low-power operational amplifier |
| Open-Loop Gain | High gain |
LM358PW 8-pin tssop 腳位配置指南
LM358PW（8-pin tssop 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： LM358PW.
請參閱 資料表 以查看完整腳位配置。
典型應用
LM358PW 適用於 6 應用s: Industrial Sensor Signal Conditioning, Audio Preamplification, ADC Front-End Amplification, Closed-Loop Control, Portable Instrumentation, Level Shifting and Buffering.
Industrial Sensor Signal Conditioning
The LM358PW is appropriate for conditioning low-frequency sensor signals in industrial control equipment because it combines two high-gain, general-purpose amplifier channels in one compact 8-pin TSSOP package. One channel can amplify a sensor output while the other provides active filtering, buffering, or error amplification in a feedback loop. The ±16 V to ±32 V supply range supports industrial supply environments, although the exact input common-mode range and output swing must remain within the manufacturer limits. Keep the sensitive input route short, provide stable feedback, and place supply bypassing near the device. For slowly changing measurements, verify bias-current and offset errors against the sensor impedance and required accuracy before finalizing the gain network.
推薦
Audio Preamplification
LM358PW can serve as a general-purpose audio preamplifier in compact analog signal paths that do not require rail-to-rail operation or exceptionally low noise. The two channels can provide source gain and output buffering, or they can implement separate gain and filtering paths for stereo audio. Its wide supply range allows use with higher-voltage analog rails, while the TSSOP-8 package reduces board area compared with a larger dual package. The engineer must confirm output swing, gain-bandwidth behavior, noise, slew rate, and load stability in the manufacturer datasheet. Use short signal traces, maintain a quiet ground return, and keep the amplifier output away from digital and switching circuitry.
推薦
ADC Front-End Amplification
The LM358PW is useful in ADC front-end designs where a differential or single-ended sensor signal requires amplification before conversion. Its two amplifier channels can provide gain and active filtering within the same 8-pin TSSOP package, reducing board area and component count. A low-impedance ADC can be driven effectively when the op amp remains within its output-current, swing, and stability specifications. Input offset, bias current, noise, and slew rate determine suitability for high-resolution or fast conversions, so compare those manufacturer parameters with the converter's input range and acquisition requirements. Place the amplifier close to the ADC, use a compact feedback network, and return analog ground in a way that avoids switching-node interference.
推薦
Closed-Loop Control
LM358PW supports closed-loop feedback control in power, actuator, and process-control systems where two independent amplifier channels are useful. One channel may amplify the error signal while the other drives the feedback network or serves as an additional gain stage. The dual general-purpose architecture and ±16 V to ±32 V supply range make it suitable for many industrial signal chains, provided the loop bandwidth remains compatible with the device's gain-bandwidth and slew-rate limits. Stability is the central design issue: use the recommended compensation or noise-gain arrangement, keep feedback traces short, and ensure the output cannot exceed its voltage or current limits during startup or fault conditions. Thermal behavior should also be checked at the highest expected load.
推薦
Portable Instrumentation
LM358PW is applicable to portable measurement and instrumentation products that need two low-power analog channels in a small package. The TSSOP-8 footprint assists board miniaturization, while the low-power characterization supports battery-powered operation when the system does not require a more specialized micropower amplifier. The device can amplify sensor outputs, buffer references, or form active analog filters. Because battery systems often share grounds with switching converters, maintain careful signal routing and use the manufacturer's supply-bypass recommendations. Confirm input bias current for high-source-impedance sensors and verify common-mode headroom across the complete battery discharge range. The wide supply capability also provides flexibility, but it should not be treated as a guarantee of full rail-to-rail performance.
推薦
Level Shifting and Buffering
LM358PW can buffer or level-shift analog signals between circuit sections whose common-mode ranges differ. Its two channels allow one signal to be conditioned while another is buffered for a downstream instrument or switching device. This is useful in mixed-signal products where the source and load cannot be connected directly because of impedance, offset, or grounding concerns. The design must preserve the amplifier's common-mode and output-swing limits at every operating point, particularly in single-supply systems where the output approaches ground. Use the manufacturer input-bias and output-capability data to select resistor values, and confirm that the load does not compromise stability. A local bypass capacitor and short feedback path help maintain predictable behavior in compact equipment.
推薦
推薦產品摘要
工程參考資料，適用於 LM358PW — 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 | LM2904PW | LM2904P3 | RC4558Z | LM358TT | RC4558 |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Vishay Intertechnology | STMicroelectronics | Vishay Intertechnology |
| Package | 8-pin TSSOP | 8-pin TSSOP | 8-pin TSSOP | 8-pin TSSOP | 8-pin TSSOP | 8-pin TSSOP |
| Amplifier Channels | 2 circuits | 2 circuits | 2 circuits | 2 circuits | 2 circuits | 2 circuits |
| Device Category | General-purpose operational amplifier | General-purpose operational amplifier | General-purpose operational amplifier | General-purpose operational amplifier | General-purpose operational amplifier | General-purpose operational amplifier |
| Architecture | Voltage feedback | Voltage feedback | Voltage feedback | Voltage feedback | Voltage feedback | Voltage feedback |
主要差異化特點
- Two general-purpose channels in one compact package (對比LM2904PW)
- Documented wide supply-voltage capability (對比RC4558Z)
- Established low-power general-purpose positioning (對比LM358TT)
設計說明
Place the manufacturer-recommended supply-bypass capacitor immediately between the LM358PW supply and ground pins, with the shortest practical ground return. Keep each feedback loop compact and avoid routing high-impedance inputs beside the device's supply, output, or digital clock traces. Because both channels share the same TSSOP power pins, bypassing serves the entire package. A single misplaced bypass capacitor or a long feedback route can add phase delay and parasitic coupling, potentially degrading stability or increasing oscillation risk in high-gain configurations.
Do not assume that the ±16 V to ±32 V supply rating means the amplifier can accept every input or output level within that range. Check the common-mode input range, output swing, output-current capability, and load stability for the intended configuration. In single-supply systems, biasing may be required when the source approaches ground. Also avoid using a generic dual-op-amp footprint as proof of drop-in compatibility; verify the exact pin functions and package drawing for every proposed alternative.
For sensor and audio inputs, use a continuous analog ground strategy and connect the op-amp ground reference to the quiet analog return rather than through a current-carrying path. Keep the LM358PW away from switching nodes, high-current return paths, and fast digital edges. The two channels are independent, but their shared supply pins mean that supply disturbance caused by one channel can affect both. Confirm the target signal bandwidth against the device's gain-bandwidth, slew-rate, and noise specifications before increasing closed-loop gain.
合規資訊
Compliance declarations were not identified in the manufacturer or distributor catalog excerpts. Confirm current environmental, automotive, and material-compliance status on the Texas Instruments product page before release to production.