LM2904VDMR2 - Dual 3-32V Op Amp for Industrial Control
MPN: LM2904VDMR2 ✓ Hoạt độngLM2904VDMR2 Tóm tắt
An operational amplifier is a voltage-gain building block used to amplify small signals, buffer sensors, compare voltages, and implement active analog filters. The dual LM2904 family combines two amplifiers in one package, reducing board area compared with separate single amplifiers. Its ability to operate from a single positive supply or from split positive and negative rails gives it broad utility in both grounded-signal systems and bipolar analog environments.
Key features include low power drain, a 1 MHz gain-bandwidth product, and a common-mode input range that extends to ground or VEE. The 3 V to 32 V operating range supports both conventional 5 V and 24 V industrial systems when the total supply remains within the rated range. The 8-MSOP surface-mount package also supports compact, high-density analog boards while providing adequate lead spacing for automated assembly and inspection.
The LM2904 architecture derives from the circuit design used in onsemi's quad operational-amplifier family. It is intended for general-purpose applications where low power consumption and flexible supply configurations are more important than precision, rail-to-rail input/output performance, or the bandwidth of modern CMOS amplifiers. Because the input common-mode range can reach ground or VEE, the device can process signals near the lower supply rail when correctly biased.
Typical applications include 0–5 V or 0–10 V industrial sensor interfaces, low-level transducer amplification, analog alarm and threshold circuits, active low-pass filters, and general control-signal conditioning. It may also be used in battery-powered instrumentation where the selected operating point must balance signal bandwidth against power drain. Split-supply operation is useful for bipolar sensor signals or analog stages that require both positive and negative swing around ground.
When designing around the LM2904VDMR2, verify input and output voltage limits at the selected supply voltage and load. Input and output decoupling should be placed close to the device, and unused amplifier channels must be configured according to the manufacturer’s recommended stable operating conditions. Avoid relying on rail-to-rail behavior, and account for input offset and bias-current errors when designing high-accuracy signal chains.
This product page consolidates the confirmed supply, bandwidth, package, and application characteristics with drop-in replacement analysis, package comparison, and practical circuit guidance. It helps engineers distinguish genuine footprint-compatible options from amplifiers that are only functionally similar before committing a new board revision.
Bộ thay thế dễ dàng lắp đặt cho LM2904VDMR2 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
LM2904DMR2
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
LM2904VDMR2 Tỷ lệ tối đa & tính chất điện
| Product Type | Dual operational amplifier |
| Number of Amplifier Channels | 2 channels |
| Supply Voltage Range | 3 V to 32 V |
| Alternate Maximum Supply Voltage | 26 V |
| Gain-Bandwidth Product | 1 MHz |
| Common-Mode Input Range | Extends to ground or VEE |
| Supply Configuration | Single supply or split supply |
| Power Consumption | Low power drain |
| Khoảng nhiệt độ hoạt động | -25 °C to +85 °C |
| Hộp | Micro-8 |
| Package Type | 8-MSOP |
| Số lượng chân | 8 pins |
| Kiểu lắp đặt | Surface mount |
| Amplifier Classification | Standard general-purpose amplifier |
Hướng dẫn cấu hình chân LM2904VDMR2 8-msop
Cấu hình chân cho LM2904VDMR2 (8-msop gói). Thành phần số hiệu này có chân đầu vào, đầu ra và nguồn cung cấp. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết cấu hình chân bù, bù trừ và chân kích hoạt. Hoàn hảo cho điều kiện tín hiệu và mạch khuếch đại.
Không có dữ liệu chân cụ thể sẵn có cho LM2904VDMR2.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
LM2904VDMR2 phù hợp cho 6 Áp dụngs: Industrial Sensor Signal Conditioning, 0–10 V Control Signal Buffering, Transducer and Sensor Interface, Active Low-Pass Filter, Threshold and Alarm Detection, Split-Supply Analog Front End.
Industrial Sensor Signal Conditioning
The LM2904VDMR2 is appropriate for amplifying low-level industrial sensor signals because it provides two channels, a 1 MHz gain-bandwidth product, and a confirmed 3 V to 32 V supply range. A typical circuit uses one channel for non-inverting amplification and the other for an active filter or reference stage. Its common-mode input range extending to ground or VEE is useful when the sensed voltage lies near the lower rail. Designers should still calculate closed-loop gain against the 1 MHz bandwidth and verify that input and output operating points remain within the electrical limits.
Được đề xuất
0–10 V Control Signal Buffering
LM2904VDMR2 can buffer and condition a 0–10 V industrial control signal when the system operates from a compatible single supply. The 1 MHz gain-bandwidth product provides ample bandwidth for slow control-loop signals, while the two amplifier channels allow one stage to buffer the input and another to perform scaling or filtering. Because the common-mode range extends toward ground or VEE, the circuit can accommodate input signals near the lower supply rail. The final design must confirm output swing, load capability, stability with the selected feedback network, and operation throughout supply tolerance.
Được đề xuất
Transducer and Sensor Interface
The LM2904VDMR2 fits transducer interfaces that operate from a 5 V to 24 V supply and require two analog channels on one package. One amplifier can provide gain around a resistive sensor bridge, while the other can buffer the result or form an active low-pass filter. Its common-mode input range extending to ground or VEE helps with sensors whose output is close to the lower rail. The 3 V to 32 V operating range supports industrial supply variants, but input bias current, offset voltage, output drive, and noise must be checked against the sensor impedance and required measurement accuracy.
Được đề xuất
Active Low-Pass Filter
The LM2904VDMR2 can implement a second-order active low-pass filter when both amplifier channels are assigned to the filter topology. Its 1 MHz gain-bandwidth product provides a practical basis for choosing closed-loop gains and component values, while the 8-MSOP package keeps the implementation compact. The supply range of 3 V to 32 V permits operation from a 5 V rail or an appropriately protected 24 V system. Filter performance remains dependent on resistor tolerances, capacitor selection, output loading, and amplifier stability, so the final transfer function should be simulated before release to manufacturing.
Được đề xuất
Threshold and Alarm Detection
LM2904VDMR2 is well suited to threshold and alarm detection because its common-mode input range can extend to ground or VEE and its supply range reaches 32 V. A comparator-style application can compare a sensor voltage against a reference, with the second channel available for reference buffering or hysteresis shaping. The 1 MHz gain-bandwidth product is sufficient for many slow industrial alarms and avoids the bandwidth limits of very low-frequency comparators. The circuit must include suitable output pull-up or load arrangements, verify input common-mode limits, and account for offset voltage so the switching threshold remains repeatable.
Được đề xuất
Split-Supply Analog Front End
The LM2904VDMR2 can process bipolar signals when the board provides positive and negative rails because the amplifier explicitly supports split-supply operation. Both channels can be used for instrumentation-style gain and filtering stages without changing to a rail-to-rail device, provided the signal remains inside the common-mode range. The 3 V to 32 V figure describes the total supported supply condition, so the rail allocation and negative-rail magnitude must be taken from the manufacturer electrical characteristics. Decoupling, input protection, and output-swing verification are especially important when the input approaches either supply rail.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho LM2904VDMR2 — 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 | LM2904DMR2 |
|---|---|---|
| Brand | onsemi | onsemi |
| Package | 8-MSOP | 8-MSOP |
| Product Type | Dual operational amplifier | Dual operational amplifier |
| Number of Channels | 2 channels | 2 channels |
| Mounting Type | Surface mount | Surface mount |
Bảo phân biệt quan trọng
- Higher confirmed upper supply rating (vsTI LM2904)
- Higher gain-bandwidth product (vsTI LM2904)
- Compact dual-amplifier integration (vsLM2904P3)
Ghi chú thiết kế
Place the input and output bypass capacitors close to the corresponding power pins and route each return current directly to the device ground or supply-reference plane. Keep sensitive input traces short, avoid routing them alongside switching-node or high-current traces, and use a continuous ground reference beneath the analog section. The 8-MSOP package has fine lead spacing, so verify pad dimensions, solder-mask clearance, and assembly capability against the manufacturer package drawing before releasing the PCB.
Do not assume rail-to-rail input or output behavior. Check the common-mode input range against the actual signal and supply levels, especially when operating near ground or VEE. For each channel, use the manufacturer’s recommended configuration when the output is unused, account for output loading, and avoid creating feedback networks that approach the device’s stability limits. The 1 MHz gain-bandwidth product should be used as the basis for closed-loop bandwidth calculations rather than treated as unlimited signal bandwidth.
The confirmed operating range is 3 V to 32 V, but industrial 24 V rails can exceed nominal voltage during transients. Analyze the maximum rail voltage, supply tolerance, and switching spikes before connecting the device. Decoupling close to the package helps control supply noise, while external clamping may be required in long cables or inductive environments. Separate the 24 V input path from sensitive signal routing so common-mode supply noise is not injected into the amplifier inputs.
Thông tin tuân thủ
The LM2904VDMR2 is a general-purpose commercial operational amplifier rather than an AEC-Q100-qualified automotive device. RoHS, REACH, lead-free, halogen-free, and conflict-minerals status were not established from the cited product information.
