LM358AN/NOPB - Dual 32 V Op Amp | Texas Instruments
MPN： LM358AN/NOPB ✓ 啟用中LM358AN/NOPB 概覽
An operational amplifier is an analog signal-processing IC that uses differential input voltage to control an output voltage. A dual device contains two amplifiers that operate independently but share a supply. The LM358 belongs to the general-purpose operational-amplifier hierarchy, where its differential input stage, high open-loop gain, internal frequency compensation, and wide supply range make it suitable for signal conditioning, amplification, filtering, and control applications that do not require rail-to-rail input or output operation.
The principal family-level characteristics include two amplifier circuits, a maximum supply rating of 32 V, a 1 MHz gain-bandwidth product, approximately 700 kHz bandwidth for the LM358AN comparison entry, and a slew rate of 0.3 V/us. Each amplifier has two differential inputs and one output. Internal frequency compensation removes the need for an external compensation network in many conventional closed-loop configurations. The wide operating supply permits use in both low-voltage 5 V systems and higher-voltage industrial control circuits.
The two amplifiers share power-supply connections but retain separate input and output pins, allowing one section to perform sensing or amplification while the other performs buffering, level conversion, or an additional control function. Because the device is intended for single-supply operation, its common-mode input range and output swing are important design constraints. Engineers should verify those limits against the exact operating condition required by the application rather than assuming behavior from a rail-to-rail amplifier.
Typical uses include transducer-signal conditioning, low-frequency active filters, comparators with an external reference, loop-error amplifiers, audio preamplification, and general-purpose analog control. The dual configuration is especially useful when a board needs two independent analog channels without allocating space for two separate amplifier packages. The internal compensation also simplifies designs requiring stable gain, although stability still depends on the selected feedback network, output loading, and signal frequency.
A primary design consideration is input and output range. On a single 5 V supply, the LM358 does not necessarily swing rail to rail, so the signal and feedback network must remain inside its common-mode and output-swing limits. Decoupling capacitors should be placed close to the supply pins, and unused amplifier sections should be configured conservatively rather than left floating. Input-referred offset and bias current should also be checked against the source impedance and required measurement accuracy.
This product page combines the exact LM358AN/NOPB ordering identity, manufacturer family specifications, package details, sourcing guidance, and engineering-focused application analysis. It also organizes same-footprint alternatives, comparison parameters, and practical design notes so engineers can assess fit before committing to a PCB and production BOM.
直接替換替代品，適用於 LM358AN/NOPB — 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： LM358AN/NOPB （相同外形與佔位） — 差異在於 Package, Gain-Bandwidth Product, Amplifier Count, Input Offset Voltage, Supply Configuration.
LM358AN
✅ 直接替換聯絡詢價
查看資料表 →LM2904N
✅ 直接替換聯絡詢價
查看資料表 →RC4558N
✅ 直接替換📋 參考替代品（不在目錄中）
LM358AN/NOPB 最大額定值與電氣特性
| Amplifier Count | 2 circuits |
| Device Type | Dual general-purpose operational amplifier |
| Maximum Supply Voltage | 32 V |
| Minimum Supply Voltage | 3 V |
| Gain-Bandwidth Product | 1 MHz |
| Bandwidth | 700 kHz |
| Slew Rate | 0.3 V/us |
| Input Offset Voltage | 2 mV |
| Architecture | Two independent, high-gain, internally frequency-compensated amplifiers |
| Supply Configuration | Single supply operation |
| 封裝 | 8-PDIP |
| 腳位數 | 8 pins |
| 安裝類型 | Through-hole |
LM358AN/NOPB 腳位配置
| 腳位 1 | OUT1 — Output of amplifier 1 |
| 腳位 2 | IN1- — Inverting input of amplifier 1 |
| 腳位 3 | IN1+ — Non-inverting input of amplifier 1 |
| 腳位 4 | V- — Negative supply or ground connection |
| 腳位 5 | IN2+ — Non-inverting input of amplifier 2 |
| 腳位 6 | IN2- — Inverting input of amplifier 2 |
| 腳位 7 | OUT2 — Output of amplifier 2 |
| 腳位 8 | V+ — Positive supply connection |
典型應用
LM358AN/NOPB 適用於 6 應用s: Transducer Signal Conditioning, Audio Preamplification, Active Filter Design, Industrial Control Loop, Battery-Powered Monitoring, Power Supply Feedback.
Transducer Signal Conditioning
The LM358AN/NOPB fits low-frequency sensor conditioning because it provides two independent, high-gain, internally compensated amplifiers in one 8-PDIP package. One section can amplify a sensor signal while the other provides filtering, inversion, or an active-feedback stage. Its 3 V to 32 V family supply range permits use in both 5 V embedded systems and higher-voltage industrial circuits. The main design constraints are common-mode input range, input offset voltage, output swing, and the approximately 700 kHz bandwidth identified for the LM358AN family. Source impedance must also be low enough that input bias current produces an acceptable voltage error. Because the device is not a rail-to-rail precision amplifier, verify that the sensor output and amplified result remain inside the usable input and output ranges.
推薦
Audio Preamplification
The LM358AN/NOPB is appropriate for modest audio preamplification and active-filter stages where a dual general-purpose amplifier is more useful than a single precision device. Its two independent channels can process left and right signals or handle a gain stage and a buffer within the same 8-PDIP package. The LM358 family's 1 MHz gain-bandwidth product and 0.3 V/us slew rate provide useful bandwidth for low-frequency audio paths, although they do not match the performance of a dedicated low-noise audio amplifier. Output swing, input common-mode range, channel separation, and distortion should be checked against the speaker or line-level drive requirement. Decoupling and feedback-network placement remain important for stable, low-noise behavior.
推薦
Active Filter Design
The LM358AN/NOPB can implement first- and second-order active filters below its practical bandwidth because each internally compensated section supports conventional negative-feedback configurations. A dual package allows a two-pole signal-path filter and an independent buffer or auxiliary filter without adding another amplifier footprint. The device's 3 V to 32 V supply range supports low-voltage portable circuits and 24 V industrial systems, but resistor and capacitor tolerances will dominate accuracy in many filter designs. Check the 700 kHz LM358AN bandwidth, 0.3 V/us slew rate, output loading, and common-mode range when setting gain and cutoff frequency. Place feedback components close to the amplifier pins to reduce parasitic feedback and maintain stability.
推薦
Industrial Control Loop
The LM358AN/NOPB is useful in industrial error-amplifier and actuator-control circuits because it combines two independent amplifiers with a wide single-supply range up to 32 V. One channel may amplify a sensor error while the other drives or buffers a control signal, reducing component count. The dual arrangement is particularly helpful in compact control boards where through-hole construction and serviceability are preferred. Design around the non-rail-to-rail input and output limits, and ensure the feedback network remains valid at the highest operating temperature. Output-current requirements, capacitive loading, and loop stability must be evaluated for the selected actuator. A dedicated comparator is preferable when the function is strictly threshold switching rather than continuous analog control.
推薦
Battery-Powered Monitoring
The LM358AN/NOPB can serve as a low-voltage monitoring amplifier in battery-powered equipment because the family accepts supplies beginning at 3 V and includes two amplifier sections in one package. One amplifier may monitor a battery or sensor node while the other buffers a reference or drives an indicator. Its dual internal construction is helpful in compact equipment where every board area matters. The critical constraint is the common-mode input range: on a 3 V supply, the sensed node may be close to the positive rail and outside the usable input range. The output also cannot be assumed to swing fully rail to rail. Use the Request a Quote form for the exact ordering code when confirming current supply status for production builds.
推薦
Power Supply Feedback
The LM358AN/NOPB can monitor a regulated power rail or amplify the error signal in a simple non-isolated control circuit. Its high open-loop gain and internal frequency compensation are useful for feedback amplification, while the 3 V to 32 V supply range allows operation across common industrial voltage levels. The two channels can separately amplify the power rail and provide a buffered reference to the control system. Because the LM358 is not a rail-to-rail precision amplifier, the monitored voltage and feedback node must remain inside the common-mode range. Verify output swing, stability with the power-stage impedance, and temperature behavior before relying on the result for precision supervision.
推薦
推薦產品摘要
工程參考資料，適用於 LM358AN/NOPB — 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 | LM358AN | LM2904N | RC4558N |
|---|---|---|---|---|
| Package | 8-PDIP | 8-PDIP | 8-PDIP | 8-PDIP |
| Brand | Texas Instruments | onsemi | onsemi | Toshiba |
| Amplifier Count | 2 circuits | 2 circuits | 2 circuits | 2 circuits |
| Architecture | Two independent, internally frequency-compensated amplifiers | Two independent, internally frequency-compensated amplifiers | Dual internally compensated operational amplifier | Dual operational amplifier |
| Mounting Type | Through-hole | Through-hole | Through-hole | Through-hole |
主要差異化特點
- Two independent amplifier sections in one through-hole package (對比RC4558N)
- 32 V family supply capability with a 3 V minimum (對比LM2904N)
- 1 MHz family gain-bandwidth product (對比LM358AN)
設計說明
Decouple the positive supply pin with a local ceramic capacitor and provide adequate bulk capacitance near the device. Keep the ground return short and route input-referencing currents away from the supply path. Because this is a single-supply device, confirm that the input common-mode range and output swing remain valid at the minimum supply voltage. Bypass placement is especially important when one amplifier handles a low-level sensor and the other drives a switching or control load.
Use the manufacturer's eight-pin PDIP pin description when laying out the board, and avoid relying only on a generic dual-op-amplifier symbol. Keep feedback resistors and compensation-related components close to their associated pins, provide a continuous ground plane, and isolate analog input routing from switching-node copper. For a through-hole design, check lead pitch and body width against the PCB drill pattern before committing to the footprint.
Do not assume rail-to-rail input or output behavior, and do not leave either amplifier section floating. Tie an unused non-inverting input to a defined reference within the common-mode range, then configure the corresponding inverting input as appropriate for stable operation. Also verify offset voltage against the required measurement accuracy: the LM358AN comparison data identifies approximately 2 mV input offset, which can be significant in precision current or voltage measurements.
Keep each amplifier's feedback loop physically compact and avoid placing high-capacitance loads directly on its output. Source resistance at the non-inverting input should be considered together with input bias current, while excessive capacitance across the input and feedback nodes can affect stability and transient response. For higher-frequency or higher-precision requirements, choose an amplifier with rail-to-rail inputs, lower offset, and a wider GBW rather than compensating with external networks.
合規資訊
No explicit RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive-qualification statement appears in the product references. Use the exact manufacturer product or material declaration for production compliance decisions.
