LM358DR2 - Dual 3-32V Op Amp | onsemi | Industrial
MPN： LM358DR2 ✓ 啟用中LM358DR2 概覽
An operational amplifier is an analog integrated circuit that uses high-gain differential amplification to compare two input voltages. The LM358 family combines two amplifiers in one package, reducing board area compared with two separate single amplifier packages. A low-dropout single-supply architecture allows the amplifier to operate from a supply only slightly above the required output range, while the common-mode input range extending toward ground supports sensors whose signals begin near 0 V.
The principal application advantages are the dual-channel configuration, 3 V to 32 V supply range, low power drain, and flexible single- or split-supply use. Two independent amplifier channels can implement non-inverting or inverting gain stages, differential sensing, comparators, active filters, transimpedance stages, and feedback loops. The 8-pin SOIC package supports compact PCB layouts and automated assembly, but the exposed package lead geometry and electrical limits must still be checked against the circuit requirements.
The LM358 architecture is intended for general-purpose analog signal conditioning rather than high-speed, precision, or rail-to-rail applications. Designers should account for input bias current, input offset voltage, output-current capability, common-mode limits, and output-swing behavior in each operating condition. Because no complete timing, noise, accuracy, or output-drive table appears in the product results, those values should be taken directly from the manufacturer data sheet before sizing external resistors or capacitors.
Typical uses include conditioning a 0 V to sensor-range signal, buffering a potentiometer, amplifying strain-gauge or thermocouple outputs, driving analog control loops, and forming active filters. In industrial systems, the 32 V maximum listed supply voltage provides compatibility with higher-voltage rails, but the design still requires correct input and output common-mode ranges for each channel.
The main layout consideration is decoupling. Place the supply bypass capacitor close to the positive supply and ground pins, keep feedback-loop routing short, and return analog-ground currents directly to the device ground rather than through high-current switching paths. Check bias-current-induced offset and output-swing limits before using the amplifier with high-impedance sources, and verify that the selected SOIC footprint matches the exact ordering code.
This product record combines the verified LM358DR2 identity, supply-range description, package information, sourcing links, drop-in comparison, and practical design guidance. It is intended to help engineers identify the correct dual amplifier and assess PCB, layout, and application compatibility before releasing a schematic or BOM.
直接替換替代品，適用於 LM358DR2 — 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： LM358DR2 （相同外形與佔位） — 差異在於 Amplifier Type, Common-Mode Input Range, Number of Channels, Package.
LM2904DR
✅ 直接替換聯絡詢價
查看資料表 →TP358
✅ 直接替換📋 參考替代品（不在目錄中）
SGMI8358
✅ 直接替換📋 參考替代品（不在目錄中）
BP358
✅ 直接替換📋 參考替代品（不在目錄中）
NSMOP-358
✅ 直接替換📋 參考替代品（不在目錄中）
LM358DR2 最大額定值與電氣特性
| Amplifier Type | Dual operational amplifier |
| Number of Channels | 2 channels |
| Single-Supply Operating Voltage | 3 V to 32 V |
| Supply Configuration | Single supply or split supply |
| Common-Mode Input Range | Extends to ground and VEE |
| 封裝 | 8-pin SOIC |
| 安裝類型 | Surface mount |
| Power Drain | Low |
LM358DR2 8-pin soic 腳位配置指南
LM358DR2（8-pin soic 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： LM358DR2.
請參閱 資料表 以查看完整腳位配置。
典型應用
LM358DR2 適用於 6 應用s: Low-Side Sensor Signal Conditioning, Industrial Control Feedback, Active Audio and Communication Filtering, Potentiometer and Resistive Sensor Buffering, Power-Supply Feedback and Monitoring, Portable Measurement and IoT Interfaces.
Low-Side Sensor Signal Conditioning
The LM358DR2 fits low-side sensor conditioning because its common-mode input range extends to ground and VEE, allowing signals near 0 V to be processed from a 3 V to 32 V supply. Use one channel to amplify the sensor output and the second for buffering, gain trim, or active filtering. Check input bias current against the sensor's source impedance and verify output swing at the required load. Because these limits are not stated in the indexed product excerpts, validate them in the manufacturer data sheet before finalizing resistor values.
推薦
Industrial Control Feedback
The LM358DR2 is suitable for industrial control loops where a 3 V to 32 V supply and dual-channel packaging simplify signal conditioning around a controller. One amplifier can condition the feedback sensor while the other shapes an error or reference signal. Its common-mode capability toward ground and VEE supports low-side feedback systems, but the output must remain inside the amplifier's valid swing region. Verify stability with the actual sensor network, compensation network, load, and operating temperature before production release.
推薦
Active Audio and Communication Filtering
The LM358DR2 can implement first-order active filters, signal conditioners, and channel buffers in low-frequency audio or communications equipment. Its two channels allow one stage to perform filtering while the other provides impedance buffering or gain control. The 8-pin SOIC package supports compact, automated board assembly. Performance checks should include the gain-bandwidth product, slew rate, output swing, noise, and stability with the selected source and load, because those characteristics must be confirmed from the manufacturer data sheet.
推薦
Potentiometer and Resistive Sensor Buffering
The LM358DR2 is a practical choice for buffering potentiometer positions or resistive sensors whose signal is referenced close to ground. The amplifier prevents the sensor divider from being loaded by the following stage and can provide adjustable gain through external feedback components. Evaluate bias-current error, offset voltage, and output-current demand for the sensor impedance and load. Confirm that the common-mode input remains within the operating range throughout the complete sensor movement.
推薦
Power-Supply Feedback and Monitoring
The LM358DR2 can amplify a scaled power-supply feedback voltage or monitor a current-shunt signal in an industrial or automotive-style power system. Its listed 3 V to 32 V supply range allows operation from elevated rails, while the ground-referenced common-mode range supports low-side measurements. Use the two channels for a differential measurement or monitoring function, and make sure the shunt signal, amplifier supply, and ground reference do not exceed the device's common-mode and output limits.
推薦
Portable Measurement and IoT Interfaces
The LM358DR2 can serve as the analog front end of a compact measurement or IoT interface when the system uses a supply within 3 V to 32 V and the sensor operates close to ground. Its dual channels support amplification followed by filtering or channel multiplexing, while the low-power-drain architecture is useful in portable equipment. The designer should still calculate the complete system error budget, including sensor error, bias current, offset, and ADC behavior, and verify current consumption for the intended duty cycle.
推薦
推薦產品摘要
工程參考資料，適用於 LM358DR2 — 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 | LM2904 | TP358 | SGMI8358 | BP358 | NSMOP-358 |
|---|---|---|---|---|---|---|
| Brand | onsemi | onsemi | 3PEAK | SGMC | 3PEAK | NSC |
| Package | SOIC-8 | SOIC-8 | SOIC-8 | SOIC-8 | SOIC-8 | SOIC-8 |
| Amplifier Configuration | Dual operational amplifier | Dual operational amplifier | Dual operational amplifier | Dual operational amplifier | Dual operational amplifier | Dual operational amplifier |
| Single-Supply Operating Range | 3 V to 32 V | Not specified in the indexed comparison | Not specified in the indexed comparison | Not specified in the indexed comparison | Not specified in the indexed comparison | Not specified in the indexed comparison |
| Common-Mode Input Range | Extends to ground and VEE | Not specified in the indexed comparison | Not specified in the indexed comparison | Not specified in the indexed comparison | Not specified in the indexed comparison | Not specified in the indexed comparison |
| Supply Configuration | Single supply or split supply | Single supply or split supply family operation | Not specified in the indexed comparison | Not specified in the indexed comparison | Not specified in the indexed comparison | Not specified in the indexed comparison |
| Power Consumption | Low power drain | Low-power family operation | Not specified in the indexed comparison | Not specified in the indexed comparison | Not specified in the indexed comparison | Not specified in the indexed comparison |
| Pin Compatibility | 8-pin SOIC LM358 family pinout | Pin-compatible LM358-family replacement | Pin-compatible LM358-family replacement | Pin-compatible LM358-family replacement | Pin-compatible LM358-family replacement | Pin-compatible LM358-family replacement |
| Primary Application | General-purpose single- or split-supply analog signal conditioning | General-purpose dual operational amplification | General-purpose dual operational amplification | General-purpose dual operational amplification | General-purpose dual operational amplification | General-purpose dual operational amplification |
主要差異化特點
- Broad listed single-supply operating range (對比LM2904)
- Dual channels in a compact surface-mount package (對比SGMI8358)
- Common-mode operation extending toward ground and VEE (對比BP358)
- Flexible single- or split-supply operation (對比NSMOP-358)
設計說明
Place the supply bypass capacitor immediately beside the LM358DR2 power and ground pins. Keep the feedback components, input traces, and output trace short so that parasitic resistance and capacitance do not alter the intended gain or phase margin. The two channels are electrically separate even though they share supply pins, so high-current output routing on one channel should not be placed in the signal-ground path of the other.
Do not assume rail-to-rail input or output behavior. The verified product description specifies a common-mode range extending to ground and VEE, but the usable range still depends on the supply arrangement and operating conditions. Verify the input common-mode limits, output swing, output-current capability, and stability for the selected gain from the manufacturer data sheet before using the device near a rail.
Separate analog signal paths from switching-converter currents and digital return paths. Use a compact ground connection for the amplifier, place the bypass capacitor at the device pins, and route sensor inputs away from high-voltage or fast-switching nodes. For high-impedance sensors, minimize leakage from board contamination and guard exposed input nodes when the sensor impedance makes bias-current error significant.
The 3 V minimum listed supply voltage applies to the device itself, not automatically to every valid input and output combination. Confirm the available rail voltage, allowable input range, and required output level under minimum and maximum load. When using split supplies, check both positive and negative rail limits and ensure the common-mode and output-swing restrictions remain satisfied across the complete signal range.
合規資訊
No specific compliance declaration was identified in the indexed product results. Confirm RoHS, REACH, AEC-Q100, lead-free, halogen-free, and conflict-minerals status using the manufacturer's current product documentation and the exact ordering code.