LM358DRG3 - Dual 36V Low-Power Op Amp | Texas Instruments
MPN： LM358DRG3 ✓ 啟用中LM358DRG3 概覽
An operational amplifier is a high-gain analog building block used to amplify voltage differences, buffer inputs, implement filters, and drive control networks. The LM358 belongs to the broader hierarchy of dual operational amplifiers, analog amplifiers, signal-conditioning ICs, and power-management-support semiconductors. Its two channels can amplify separate signals or work together in differential, instrumentation, comparator, and feedback-control circuits.
The LM358B family provides a wide 3 V to 36 V supply range, while the LM358 family covered by the manufacturer product page is commonly used in both single-supply and dual-supply systems. The common-mode input range includes ground, allowing signals close to the lower supply rail to be sensed directly. Low quiescent current of approximately 300 uA per channel also benefits battery-operated and distributed sensing systems where standby power matters.
The 1.2 MHz unity-gain bandwidth provides adequate bandwidth for general-purpose closed-loop signal amplification, active filtering, and control applications. Each channel includes internal bias compensation, allowing operation without external nulling components. The dual-channel architecture reduces board area when two amplifier functions are required, while the SOIC-8 package supports conventional surface-mount assembly and automated inspection.
Typical uses include transducer signal conditioning, temperature-sensor interfaces, low-side current measurement, audio preamplification, active filters, comparators with added hysteresis, and industrial control loops. Because the common-mode input range includes ground, the device is especially useful for signals generated by sensors whose output approaches the negative supply rail. Supply bypass capacitors should be placed close to the power pins to control noise and maintain stable operation.
The principal design trade-off is bandwidth versus supply flexibility. The LM358 family supports higher supply voltages than many modern low-voltage rail-to-rail amplifiers, but its 1.2 MHz bandwidth is not intended for high-speed signal chains. Designers should also preserve input and output voltage limits and provide stable reference points for single-supply operation.
This page combines manufacturer specifications, sourcing guidance, drop-in alternatives, package considerations, and application-oriented design notes to help engineers evaluate the LM358DRG3 before integrating it into a new analog circuit.
直接替換替代品，適用於 LM358DRG3 — 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： LM358DRG3 （相同外形與佔位） — 差異在於 Package, Amplifier Type, Gain-Bandwidth Product, Number of Circuits, Slew Rate.
LM358ADR
✅ 直接替換📋 參考替代品（不在目錄中）
LM358DR
✅ 直接替換聯絡詢價
查看資料表 →LM2904PW
✅ 直接替換聯絡詢價
查看資料表 →LM358DRG3 最大額定值與電氣特性
| Product Type | Dual operational amplifier |
| Number of Amplifier Channels | 2 circuits |
| Supply Voltage Range | 3 V to 36 V |
| 靜態電流 | 300 uA per channel |
| Unity-Gain Bandwidth | 1.2 MHz |
| Common-Mode Input Range | Includes ground |
| 封裝 | 8-pin SOIC |
| 安裝類型 | Surface mount |
LM358DRG3 8-pin soic 腳位配置指南
LM358DRG3（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： LM358DRG3.
請參閱 資料表 以查看完整腳位配置。
典型應用
LM358DRG3 適用於 6 應用s: Industrial Sensor Signal Conditioning, Low-Side Current Measurement, Temperature and Pressure Transducer Interface, Audio Preamplification, Active Filtering and Control Loops, Battery-Powered Monitoring Equipment.
Industrial Sensor Signal Conditioning
The LM358DRG3 fits industrial sensor interfaces because its 3 V to 36 V supply range accommodates widely distributed industrial rails, while the common-mode input range includes ground for sensors operating near 0 V. Two channels can amplify a sensor signal and buffer a reference or feedback path. The approximately 300 uA per-channel quiescent current supports low-power sensing nodes, although the 1.2 MHz unity-gain bandwidth is intended for slow process and instrumentation signals rather than high-speed data acquisition. Place bypass capacitors near the supply pins and maintain the input common-mode and output swing limits when defining the analog front end.
推薦
Low-Side Current Measurement
The LM358DRG3 is suitable for amplifying the small voltage developed across a low-side current-sense resistor. Its common-mode input capability includes ground, which allows the sense amplifier to operate close to the negative supply rail, and its two channels can provide gain and output buffering. The 1.2 MHz unity-gain bandwidth is more than adequate for many control and telemetry paths, although input offset voltage and bias current directly influence accuracy. Keep the sense-resistor layout compact, route the amplifier inputs away from switching nodes, and use an RC filter when the measured waveform contains high-frequency switching noise.
推薦
Temperature and Pressure Transducer Interface
The LM358DRG3 can condition low-level outputs from resistive temperature or pressure sensors in both grounded single-supply systems and dual-supply instrumentation. Because the common-mode range includes ground, a sensor output near 0 V can be amplified without shifting the entire signal into the positive supply range. The 1.2 MHz bandwidth supports closed-loop gains commonly used in transducer interfaces, while low quiescent current benefits remote monitoring. Use the second channel for a reference or guard stage, and verify that sensor excitation, amplifier offset, and resistor tolerances meet the required measurement accuracy.
推薦
Audio Preamplification
The LM358DRG3 can provide modest audio preamplification in low-cost signal paths where high rail-to-rail swing and wide bandwidth are not essential. Its dual-channel architecture supports stereo or dual-mono layouts, and the common-mode input range including ground suits single-supply mixer stages biased above ground. The 1.2 MHz unity-gain bandwidth accommodates voice-band and limited full-range audio amplification, but output swing and distortion should be checked at the lowest supply voltage. Place input and feedback resistors close to their pins and decouple the supply to reduce channel-to-channel noise coupling.
推薦
Active Filtering and Control Loops
The LM358DRG3 is well suited to active filters and proportional control loops using external resistors and capacitors. Its 1.2 MHz unity-gain bandwidth allows useful closed-loop bandwidth at moderate gains, while two channels can implement a two-pole filter, an error amplifier, or a PI controller. The wide 3 V to 36 V supply range supports industrial control voltages that exceed common low-voltage amplifier limits. Compensation is internal, but stability still depends on the selected noise gain and load, so evaluate the final feedback network and output load with the intended passive component tolerances.
推薦
Battery-Powered Monitoring Equipment
The LM358DRG3 fits portable monitoring equipment because each channel draws approximately 300 uA of quiescent current and the family operates from a 3 V lower supply limit. It can amplify a sensor, generate a buffered reference, and monitor a battery or control point without requiring two separate packages. The common-mode range including ground is valuable in battery systems where sensor signals remain near 0 V. The trade-off is that the 1.2 MHz bandwidth and 3 V minimum supply are appropriate for general monitoring, not ultra-low-voltage wearables or high-speed acquisition. Disable unneeded channels where the selected operating mode permits it to reduce total standby consumption.
推薦
推薦產品摘要
工程參考資料，適用於 LM358DRG3 — 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 | LM358ADR | LM358DR | LM2904PW | LM201AD | TLV2462ID |
|---|---|---|---|---|---|---|
| Package | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Family | LM358 | LM358 | LM358 | LM2904 | LM201 | TLV2462 |
| Mounting Type | Surface mount | Surface mount | Surface mount | Surface mount | Surface mount | Surface mount |
主要差異化特點
- Wide supply-voltage capability (對比TLV2462ID)
- Low quiescent consumption (對比LM2904PW)
- Ground-referenced input capability (對比LM201AD)
- General-purpose bandwidth (對比TLV2462ID)
設計說明
Place a ceramic bypass capacitor close to each supply pin and connect the ground return directly to the ground pin. The manufacturer describes a 3 V to 36 V supply range, but the usable operating region still depends on output swing, input common-mode limits, thermal conditions, and the exact LM358 grade. Keep the power route narrow, minimize loop area, and decouple branches that switch high current so amplifier inputs do not pick up supply ripple.
Do not assume rail-to-rail input or output behavior merely because the common-mode range includes ground. An input near ground can be sensed, but the output still has a specified swing limit and may not reach the positive supply rail under heavy load. Establish a suitable mid-supply reference for single-supply biasing, and confirm that the selected gain, load, and supply voltage remain inside the electrical limits shown in the manufacturer datasheet.
Keep input, feedback, and output traces short and connect the decoupling capacitor directly to the relevant pins. For low-side current measurement, use a compact Kelvin-style connection to the sense resistor and keep the amplifier input path away from switching nodes. High source impedances can increase offset and noise susceptibility, so use practical resistor values and consider an input RC filter when the source contains high-frequency content.
The 1.2 MHz unity-gain bandwidth is sufficient for many control and sensor paths but does not make the device a high-speed op amp. Check the closed-loop bandwidth at the selected noise gain, verify capacitive-load stability with the intended output network, and add filtering ahead of the amplifier if high-frequency components can alias or modulate the signal. Feedback-component placement is important because long traces can create parasitic coupling and unstable behavior.
合規資訊
The manufacturer product page should be used to confirm the current lead-free, RoHS, REACH, and material-compliance declarations for the exact ordering code.