LM2904DRG4 - Dual 26V 700kHz Op Amp | Texas Instruments
Артикул: LM2904DRG4 ✓ АктивенLM2904DRG4 Обзор
An operational amplifier is an analog signal-processing IC that compares voltages applied to its high-impedance differential inputs and drives its output to amplify the difference between them. Within the broader semiconductor hierarchy, an operational amplifier belongs to the amplifier IC and linear IC categories. The LM2904 combines two amplifiers in one package, allowing a circuit to implement two signal-processing channels without using two separate single-amplifier packages.
The LM2904 provides 700 kHz gain bandwidth and a typical slew rate of 0.3 V/µs. Its single-supply current drain is approximately 0.7 mA per amplifier and is described as independent of supply voltage. The common-mode input range includes ground, while the device supports high-voltage operation for industrial, automotive, and control-system applications. These characteristics make it appropriate for general signal conditioning, feedback control, buffering, and low-to-moderate-frequency analog systems.
Each amplifier is independent and internally frequency compensated, simplifying circuit design because an external compensation network is not required for ordinary closed-loop operation. The wide supply capability also allows operation from a single supply or from positive and negative rails. Designers should still verify common-mode range, output swing, input bias behavior, and stability against the specific supply voltage used in the final application.
Typical uses include industrial process-control loops, transducer-signal conditioning, audio and communications-channel amplification, sensor interfaces, and low-frequency feedback systems. In a control application, the amplifier can close a feedback loop around an actuator or sensor stage. In signal conditioning, it can amplify a sensor voltage while preserving the common-mode range permitted by the selected power rails.
A key design consideration is that the 8-SOIC footprint requires conventional surface-mount assembly and careful handling of input bias current and common-mode limits. Decoupling capacitors should be placed close to the supply pins, and sensitive input traces should be kept away from switching nodes. Input and output voltages must remain within the limits stated in the manufacturer datasheet.
This page organizes the verified device information, sourcing routes, and engineering considerations into a practical component-selection reference. It also identifies any missing electrical details explicitly so engineers can consult the pin-description and electrical-characteristics tables before releasing a design.
Аналоги без доработки для LM2904DRG4 — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с LM2904DRG4 (тот же форм-фактор и посадочное место) — отличается по Amplifier Type, Number of Channels, Package, Slew Rate.
LM2904DR
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Открыть даташит →LM2904DRG4 Максимальные параметры и электрические характеристики
| Amplifier Type | General-purpose operational amplifier |
| Number of Channels | 2 channels |
| Architecture | Two independent, internally frequency-compensated amplifiers |
| Maximum Supply Voltage | 26 V |
| Single-Supply Operating Range | Up to 26 V |
| Gain-Bandwidth Product | 700 kHz |
| Slew Rate | 0.3 V/µs |
| Supply Current Drain | 0.7 mA typical per amplifier |
| Supply Current Dependence | Independent of supply voltage |
| Common-Mode Input Range | Includes ground |
| Диапазон рабочих температур | -40°C to +125°C |
| Корпус | 8-SOIC, 0.154 inch / 3.90 mm width |
| Тип монтажа | Surface mount |
| Shipping Package | Tape and reel |
Руководство по цоколевке LM2904DRG4 в корпусе tape and reel
Цоколевка для LM2904DRG4 (корпус tape and reel). Этот аналоговый компонент имеет выводы входа, выхода и питания. Обратитесь к техническому описанию производителя для конфигураций выводов балансировки нуля, коррекции и разрешения. Идеально подходит для схем обработки сигналов и усилителей.
Нет подробных данных о распиновке для LM2904DRG4.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
LM2904DRG4 подходит для 6 применениеs: Industrial Process-Control Loops, Sensor Signal Conditioning, Audio and Communications Channels, Low-Frequency Feedback Amplifier, Automotive and Industrial Control Electronics, General-Purpose Analog Interface.
Industrial Process-Control Loops
The Texas Instruments LM2904DRG4 fits industrial feedback-control circuits that need two independent general-purpose amplifier channels in one 8-SOIC package. Its 700 kHz gain-bandwidth product supports low-to-moderate-frequency loops, while the 26 V supply rating provides useful headroom for systems operating from higher-voltage rails. The common-mode input range includes ground, which is important when sensing signals near the lower rail. Typical usage places one channel in the forward path and the other in a feedback or monitoring path. Designers should verify loop stability, output swing, and input bias-current effects against the actual sensor, actuator, and supply conditions.
Рекомендуется
Sensor Signal Conditioning
LM2904DRG4 is suitable for conditioning low-frequency sensor signals when the design requires two amplifier channels and a high-voltage-tolerant supply. The dual, internally frequency-compensated architecture allows one channel to amplify and the other to buffer, offset, or monitor the same transducer path. A 700 kHz gain-bandwidth product and 0.3 V/µs typical slew rate provide useful bandwidth for many temperature, pressure, and position-sensing interfaces. Because the common-mode input range includes ground, the device is also relevant to sensors whose output lies close to the lower supply rail, subject to the detailed operating limits in the manufacturer datasheet.
Рекомендуется
Audio and Communications Channels
The LM2904DRG4 can serve as a general-purpose amplification channel in audio, communications, or communications-support circuitry where modest bandwidth and low supply current are more important than precision or rail-to-rail performance. Two independent amplifiers in the 8-SOIC package can implement a balanced pair of signal paths. The 700 kHz gain-bandwidth product covers audio-band applications, and the 0.3 V/µs slew rate helps control large-signal output transitions. Layout must keep the two channels electrically separated and route sensitive input traces away from switching or high-current nodes to avoid unintended coupling.
Рекомендуется
Low-Frequency Feedback Amplifier
LM2904DRG4 is appropriate for many low-frequency closed-loop systems that do not require the bandwidth or output performance of a precision op amp. The internal frequency compensation removes the need for a conventional external compensation network in standard closed-loop configurations, while 700 kHz gain-bandwidth gives designers useful loop-bandwidth margin. One channel can perform forward amplification while the second provides feedback, monitoring, or an auxiliary output. Stability should be checked with the actual source impedance, load capacitance, supply configuration, and feedback network because external loading can alter behavior at the board level.
Рекомендуется
Automotive and Industrial Control Electronics
The LM2904DRG4 can be evaluated for automotive or industrial control electronics because the device provides a broad supply capability and an operating temperature range of -40°C to +125°C. Its dual-channel structure reduces the number of amplifiers needed for actuator drives, feedback networks, or diagnostic signal paths. The 0.7 mA typical supply-current drain per amplifier is useful in power-constrained designs. Qualification category, ESD performance, transient immunity, and production traceability must be checked separately for each exact ordering suffix before using the part in safety- or automotive-critical functions.
Рекомендуется
General-Purpose Analog Interface
LM2904DRG4 provides a practical dual-amplifier building block for miscellaneous analog interfaces, including gain stages, buffer functions, threshold amplifiers, and test-fixture signal conditioning. The 8-SOIC footprint simplifies use in conventional surface-mount boards, while internal frequency compensation supports straightforward closed-loop layouts. With 26 V maximum supply voltage and approximately 0.7 mA typical drain per amplifier, the part offers flexibility where signal amplitude exceeds the range of common low-voltage devices. Confirm output-current capability, output-voltage swing, input common-mode limits, and stability with capacitive loads before selecting it for a new interface.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для LM2904DRG4 — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | LM2904DR |
|---|---|---|
| Brand | Texas Instruments | Texas Instruments |
| Package | 8-SOIC | 8-SOIC - same |
| Amplifier Channels | 2 | 2 |
| Maximum Supply Voltage | 26 V | 26 V |
| Gain-Bandwidth Product | 700 kHz | 700 kHz |
| Slew Rate | 0.3 V/µs | 0.3 V/µs |
| Supply Current Drain | 0.7 mA typical per amplifier | 0.7 mA typical per amplifier |
| Common-Mode Input Range | Includes ground | Includes ground |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C |
| Ordering Configuration | DRG4 tape and reel | DR ordering suffix |
| Compensation | Internally frequency compensated | Internally frequency compensated |
Ключевые отличия
- Identified 8-SOIC drop-in relationship (против LM2904DR)
- Dual channels reduce board-area requirements (против LM2904DR)
- Broad supply and temperature capability (против LM2904DR)
Заметки по проектированию
Place the supply-bypass capacitor immediately between each amplifier's supply pin and ground, with the shortest possible current loop. Keep the LM2904DRG4's 26 V maximum supply rating in view, but design below the limit with margin for transients. Because the common-mode input range includes ground, check the actual input and output limits at the selected supply voltage rather than assuming full rail-to-rail operation.
Route the two amplifier channels independently and keep non-inverting input traces short, away from switching nodes, clocks, and power-converter outputs. If the circuit amplifies small signals, use a quiet ground reference and avoid sharing narrow return paths with high-current loads. The two amplifiers share a package but are independent circuits, so crosstalk is determined primarily by layout, supply impedance, and external signal coupling.
Do not assume that the LM2904 family provides rail-to-rail input or output operation. Verify the common-mode and output-swing limits against the actual supply configuration, especially when operating from a single rail near 0 V. Also account for input bias current when the source impedance is high, and use stable feedback networks when driving capacitive loads. Exact limits and stability guidance belong to the manufacturer datasheet.
Информация о соответствии
The manufacturer product page and ordering information should be consulted for the exact LM2904DRG4 compliance declarations. Qualification category must be verified for the exact ordering suffix.
