LM358DMR2G - Dual 1 MHz Op Amp, 3-32 V, 8-MSOP | onsemi
MPN: LM358DMR2G ✓ Hoạt độngLM358DMR2G Tóm tắt
An operational amplifier is a general-purpose analog building block that amplifies the voltage difference between its non-inverting and inverting inputs. The LM358 belongs to the dual-operational-amplifier hierarchy, combining two amplifier channels in one package for signal conditioning, buffering, filtering, feedback control, and low-frequency analog control applications.
Each channel offers 1 MHz gain-bandwidth, 0.6 V/µs slew rate, and up to 40 mA output current. Its common-mode input range extends to ground or VEE, which makes it useful in single 3 V to 32 V supply systems where the signal can approach the lower supply rail. The device also supports dual-supply operation for circuits requiring bipolar signal ranges around ground.
The internally frequency-compensated architecture reduces external compensation requirements and supports general-purpose closed-loop amplifier configurations. Because the LM358 is intended for moderate-bandwidth analog tasks rather than high-speed precision signal chains, bandwidth, slew rate, output-current capability, input-offset behavior, and noise should be checked against the actual signal amplitude and load requirements.
Typical uses include sensor-signal conditioning, low-frequency active filters, transducers, audio and communication interfaces, motor-control feedback paths, and industrial control loops. Its 8-MSOP surface-mount package supports compact analog designs, while the two channels can implement independent amplifier functions or complementary push-pull output stages when circuit conditions permit.
Layout should keep feedback components and sensitive input nodes compact, provide a stable local power bypass path, and avoid placing high-current return currents near the input reference. The 3 V minimum supply and 32 V maximum supply must remain within ratings at all times, including transients. Output loading should not exceed the device's stated 40 mA capability.
This page combines the exact LM358DMR2G electrical and package characteristics with application guidance, a verified same-package comparison candidate, practical layout advice, and structured specifications that help engineers determine whether this general-purpose dual amplifier fits a specific analog design.
Bộ thay thế dễ dàng lắp đặt cho LM358DMR2G — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với LM358DMR2G (cùng hình factor và footprint) — khác nhau ở Amplifier Type, Package Width.
LM2904DMR2G
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Xem tài liệu →LM358DMR2G Tỷ lệ tối đa & tính chất điện
| Number of Amplifier Channels | 2 channels |
| Amplifier Type | General purpose |
| Supply Voltage Range | 3 V to 32 V |
| Gain-Bandwidth Product | 1 MHz |
| Slew Rate | 0.6 V/µs |
| Output Current | 40 mA |
| Hộp | 8-MSOP |
| Package Width | 3.00 mm |
| Kiểu lắp đặt | Surface mount |
| Packaging | Tape and reel |
| Common-Mode Input Voltage Range | Extends to ground or VEE |
| Supply Configuration | Single supply or split supply |
| Compensation | Internally frequency compensated |
Cấu hình chân LM358DMR2G
| Chân 1 | OUT1 — Amplifier 1 output |
| Chân 2 | IN1- — Amplifier 1 inverting input |
| Chân 3 | IN1+ — Amplifier 1 non-inverting input |
| Chân 4 | GND — Ground connection |
| Chân 5 | IN2+ — Amplifier 2 non-inverting input |
| Chân 6 | IN2- — Amplifier 2 inverting input |
| Chân 7 | OUT2 — Amplifier 2 output |
| Chân 8 | VCC — Positive supply connection |
Ứng dụng tiêu biểu
LM358DMR2G phù hợp cho 6 Áp dụngs: Industrial Sensor Signal Conditioning, Active Audio Filtering, Motor Feedback Control, Portable Instrument Front End, Communication Interface Buffering, Power Supply Feedback Monitoring.
Industrial Sensor Signal Conditioning
The LM358DMR2G suits low-frequency sensor-conditioning stages that operate from a single 3 V to 32 V rail. Its common-mode input range extends to ground or VEE, while the 1 MHz gain-bandwidth and 0.6 V/µs slew rate provide useful bandwidth for slowly varying process, temperature, and position signals. Each channel can independently provide non-inverting or inverting amplification. Design the gain so that the required output remains within the amplifier's output-swing range, and account for input-offset and noise limits when specifying small sensor signals.
Được đề xuất
Active Audio Filtering
The dual LM358DMR2G can implement two active filter sections in a compact audio or communications interface. Its 0.6 V/µs slew rate supports lower-frequency signal paths, and its two channels can form cascaded first- or second-order stages. The 8-MSOP package helps reduce board area, while the 3 V to 32 V supply range permits integration into both low-voltage portable equipment and higher-voltage industrial systems. Check filter gain-bandwidth requirements and output loading to ensure the 1 MHz gain-bandwidth product provides adequate margin.
Được đề xuất
Motor Feedback Control
The LM358DMR2G can amplify current or position feedback in industrial and embedded motor-control loops. Two packaged channels allow a controller to condition feedback signals while handling another analog control or monitoring function. The ground-referenced common-mode range is useful when the feedback source operates near the lower supply rail, and the 40 mA output-current capability provides drive for moderate loads. The 1 MHz bandwidth and 0.6 V/µs slew rate suit slower loops, but compensation and stability must be evaluated against the complete feedback network.
Được đề xuất
Portable Instrument Front End
A single LM358DMR2G provides two amplifier channels for compact instrumentation powered from a low-voltage battery-derived rail. The minimum operating supply of 3 V supports energy-efficient systems, while the common-mode range extending to ground simplifies sensing around the zero-volt rail. Its 8-MSOP package supports compact layouts, and the 40 mA output-current rating is appropriate for moderate analog loads. For high-accuracy measurements, compare input offset, bias current, and noise with the sensor and ADC requirements before fixing the gain.
Được đề xuất
Communication Interface Buffering
The LM358DMR2G can buffer, amplify, or level-shift moderate-frequency communication-interface signals within embedded equipment. Its 1 MHz gain-bandwidth supports low-rate baseband or control channels, and the two channels can process separate transmit and receive paths. Operation from 3 V to 32 V makes it useful across industrial communication equipment with varied rail requirements. The common-mode input range reaches ground or VEE, simplifying operation with single-supply logic-level signals, while the output-current capability supports ordinary interface loads rather than long capacitive cable connections.
Được đề xuất
Power Supply Feedback Monitoring
The LM358DMR2G can monitor an adjustable supply by amplifying the difference between a feedback node and a reference or by buffering a remote sensing line. Its common-mode range extending to ground or VEE supports measurements near the lower rail, and the two channels can perform sensing and buffering tasks together. The 3 V to 32 V operating range is useful across industrial power systems. Ensure the monitored node remains inside the input common-mode limits, and account for amplifier offset when defining the threshold or feedback accuracy of the power-control loop.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho LM358DMR2G — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | LM2904DMR2G |
|---|---|---|
| Brand | onsemi | onsemi |
| Package | 8-MSOP | 8-MSOP - same |
| Number of Channels | 2 | 2 |
| Supply Voltage Range | 3 V to 32 V | 3 V to 32 V |
| Gain-Bandwidth Product | 1 MHz | 1 MHz |
| Slew Rate | 0.6 V/µs | 0.6 V/µs |
| Output Current | 40 mA | 40 mA |
Bảo phân biệt quan trọng
- Combines two amplifiers in an 8-MSOP package (vsLM2904DMR2G)
- Supports input signals approaching the lower rail (vsLM2904DMR2G)
- Broad supply flexibility for general-purpose analog stages (vsLM2904DMR2G)
Ghi chú thiết kế
Place the supply bypass capacitor immediately beside pin 8 and route pin 4 directly into the quiet ground plane. Keep the two amplifier input networks and feedback components close to their corresponding pins. Avoid routing motor, relay, or switching-converter return currents beneath the MSOP-8 footprint or alongside the non-inverting inputs, because shared copper paths can convert supply ripple into input error.
Treat the 3 V to 32 V range as the operating boundary and maintain transient margin below the 32 V maximum. Verify output swing at the selected load because a nominal supply limit does not guarantee full rail-to-rail output. The stated 40 mA output-current capability should be treated as a device limit, not a design target; use a load that remains below the applicable continuous and thermal conditions.
Do not select an SOIC-8 or DIP-8 LM358 solely by the base device name. The LM358DMR2G uses an 8-MSOP footprint, so a mechanical and pin-function check is required for every replacement. Also verify the required temperature grade, common-mode range, and output-current conditions. A similarly named amplifier with the same channel count and nominal bandwidth may still require different layout or protection components.
Use short feedback traces and place compensation or filter capacitors close to the relevant input and output pins. For capacitive loads, add an isolation resistor close to the amplifier output and verify stability with the actual load and board parasitics. Keep sensitive input traces away from the output nodes, particularly when the amplifier operates at higher gain where output slew activity can couple into the input.
Thông tin tuân thủ
No specific RoHS, REACH, halogen-free, or conflict-minerals declarations were identified in the cited product information.
