LM2904P3 - Dual 26V 700kHz Op Amp | Texas Instruments
MPN: LM2904P3 ✓ Hoạt độngLM2904P3 Tóm tắt
An operational amplifier is an analog integrated circuit that uses high open-loop gain to amplify the difference between signals applied to its inverting and non-inverting inputs. The LM2904 belongs to the operational-amplifier hierarchy, which includes voltage-feedback amplifiers, general-purpose amplifiers, instrumentation amplifiers, and precision amplifiers. Two amplifiers in one package can reduce board area when a circuit needs matched functions such as buffering, amplification, filtering, or differential sensing.
The verified manufacturer information identifies the LM2904 as a dual, 26 V, 700 kHz operational amplifier. The LM2904P3 orderable is identified as a general-purpose, two-circuit amplifier in an 8-PDIP package. Its dual configuration allows both amplifier sections to share one package while retaining independent inputs and outputs. The 26 V rating permits operation from higher-voltage analog systems than typical low-voltage mixed-signal amplifier families.
The 700 kHz gain-bandwidth figure defines the practical frequency range for many small-signal applications. It is relevant when closing an amplifier around a feedback network, because the amplifier must provide adequate loop gain and phase margin at the intended signal frequency. General-purpose performance makes the device suitable for signal amplification, voltage buffering, active filtering, and feedback-control stages where specialized precision or high-speed parameters are not required.
Typical uses include industrial sensor interfaces, low-frequency active filters, audio preamplifier stages, analog control loops, and general instrumentation. In a dual-amplifier circuit, one section can perform signal conditioning while the other supplies inversion, feedback, or buffering. The package is also appropriate for through-hole industrial designs where DIP mounting remains preferable to fine-pitch surface-mount assembly.
Designers should verify the complete electrical limits, electrical characteristics, pin configuration, common-mode range, output swing, input bias current, slew rate, and stability requirements in the manufacturer datasheet before finalizing a design. Decoupling, input and output signal limits, common-mode voltage, and thermal conditions must be evaluated for the exact operating environment.
This page consolidates the verified 26 V and 700 kHz device facts, distributor pricing information, package data, and same-family replacement guidance. It also adds practical selection criteria and design notes that help engineers distinguish a true 8-pin drop-in option from alternatives requiring a different footprint.
Bộ thay thế dễ dàng lắp đặt cho LM2904P3 — 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 LM2904P3 (cùng hình factor và footprint) — khác nhau ở Product Type.
LM2904P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →LM2904Y
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
LM2904Z
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
LM2904P3 Tỷ lệ tối đa & tính chất điện
| Amplifier Type | General-purpose operational amplifier |
| Number of Channels | 2 circuits |
| Maximum Supply Voltage | 26 V |
| Gain-Bandwidth Product | 700 kHz |
| Hộp | 8-PDIP |
| Kiểu lắp đặt | Through-hole |
| Product Type | Operational amplifier |
| Voltage Feedback Architecture | Operational amplifier |
| Number of Amplifiers per Package | 2 |
Hướng dẫn cấu hình chân LM2904P3 2
Cấu hình chân cho LM2904P3 (2 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 LM2904P3.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
LM2904P3 phù hợp cho 6 Áp dụngs: Industrial Sensor Signal Conditioning, Active Audio Preamplifier, Active Filters and Feedback Control, Analog Control Loop Amplifier, Test and Measurement Buffer, Legacy Through-Hole Control Boards.
Industrial Sensor Signal Conditioning
The LM2904P3 fits conventional industrial sensor-conditioning stages that need two general-purpose amplifier functions and a relatively high 26 V maximum supply rating. One section can amplify or buffer a sensor signal while the second section provides inversion or active feedback. Its 700 kHz gain-bandwidth product is suitable for many low-frequency control and instrumentation paths, although the exact input offset, bias current, common-mode range, and temperature grade must be checked before deployment. In a practical circuit, keep sensitive input routing away from switching nodes, bypass the supply locally, and verify the sensor output remains inside the amplifier's allowed common-mode range.
Được đề xuất
Active Audio Preamplifier
The LM2904P3 can implement the two amplification stages used in a modest active audio preamplifier, such as an input buffer followed by gain or inverting amplification. Its 700 kHz gain-bandwidth product covers audio-band signal processing, while the dual package simplifies board partitioning and reduces the number of amplifier packages. The 26 V maximum supply rating also accommodates higher-voltage analog circuitry when appropriate biasing is used. Designers must still verify output swing, slew rate, input bias current, noise, stability, and the intended gain against the manufacturer datasheet, particularly when driving a low-impedance audio stage.
Được đề xuất
Active Filters and Feedback Control
The LM2904P3 is suitable for first-order or moderate-complexity active-filter stages where a 700 kHz gain-bandwidth product provides useful bandwidth for low-frequency shaping. The two amplifier sections can implement an Sallen-Key or state-variable-related building blocks when their feedback and compensation requirements are satisfied. Because the device is general purpose rather than specified here as a precision amplifier, engineers should calculate gain, bandwidth, phase margin, and sensitivity using the complete manufacturer characteristics. Keep the feedback loop compact, observe grounding practices, and confirm output stability with the selected capacitor and load values.
Được đề xuất
Analog Control Loop Amplifier
The LM2904P3 can serve as an error amplifier in a conventional analog control loop when its 700 kHz gain-bandwidth product and 26 V maximum supply rating meet the loop requirements. One section may amplify the sensed error signal while the other buffers a reference or provides additional gain. The package's dual layout can reduce component count in control boards that use through-hole assembly. Actual loop stability depends on the plant, compensation network, load, and output-swing limits, all of which must be verified from the manufacturer datasheet and the complete system response rather than inferred from gain-bandwidth alone.
Được đề xuất
Test and Measurement Buffer
The dual LM2904P3 package can provide buffering and gain functions in a general-purpose test or measurement instrument. Its 700 kHz gain-bandwidth product is appropriate for many low-frequency measurement chains, while the two-circuit arrangement allows a measured signal to be buffered and amplified without requiring two separate packages. The 26 V maximum supply rating supports higher-voltage instrumentation when the common-mode and output-swing limits permit it. Before choosing the device, verify input bias current and offset because they directly affect high-impedance sources, and evaluate capacitive loading and noise with the complete source and measurement network.
Được đề xuất
Legacy Through-Hole Control Boards
The LM2904P3 is appropriate for legacy through-hole control boards that require two general-purpose amplifier channels and benefit from a stable DIP footprint for manual assembly or maintenance. Its 26 V maximum supply rating suits many legacy analog rails, and its 700 kHz gain-bandwidth product provides adequate margin for slow control and interlock loops. The 8-PDIP format simplifies through-hole prototyping and reduces the need for fine-pitch assembly equipment. Engineers should nevertheless verify obsolete-system supply tolerances, temperature requirements, noise sensitivity, and any previously selected substitute's electrical characteristics rather than treating package compatibility as proof of complete equivalence.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho LM2904P3 — 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 | LM2904P | LM2904Y | LM2904Z |
|---|---|---|---|---|
| Package | 8-PDIP | 8-PDIP | 8-PDIP | 8-PDIP |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Number of Amplifiers | 2 circuits | 2 circuits | 2 circuits | 2 circuits |
| Maximum Supply Voltage | 26 V | 26 V | 26 V | 26 V |
| Gain-Bandwidth Product | 700 kHz | 700 kHz | 700 kHz | 700 kHz |
| Product Type | General-purpose operational amplifier | General-purpose operational amplifier | General-purpose operational amplifier | General-purpose operational amplifier |
Bảo phân biệt quan trọng
- Matches the verified LM2904 family headline electrical ratings (vsLM2904P)
- Provides two general-purpose amplifiers in one 8-PDIP package (vsLM2904Y)
- Maintains a legacy-compatible 8-PDIP footprint (vsLM2904Z)
Ghi chú thiết kế
Design the supply rail with the verified 26 V maximum supply rating in mind, but do not treat that value as a recommended operating point. Confirm the complete allowable supply range, input common-mode range, output swing, and quiescent current from the manufacturer datasheet. Place the supply-bypass capacitor close to the device pins, minimize loop area, and check that power-supply ripple and startup behavior do not move either amplifier outside its valid operating region.
Keep the two amplifier inputs, feedback components, and output routing physically short and separate where practical. For an 8-PDIP device, preserve adequate spacing around adjacent through-hole pins and inspect the package drawing for exposed-metal or lead-form details. Route high-impedance input traces away from supply buses, switching nodes, and relay contacts. A compact ground return from each bypass capacitor reduces parasitic inductance and helps prevent feedback from supply or ground impedance.
Do not assume that the 700 kHz gain-bandwidth product is the usable closed-loop bandwidth at every voltage gain. Higher noise gain reduces bandwidth, while slew rate, load capacitance, output-current capability, and stability conditions can impose earlier limits. Check the manufacturer datasheet for the complete electrical characteristics and verify the intended feedback network. Also avoid using a DIP-package match alone as proof of equivalence for a different LM2904 suffix.
Thông tin tuân thủ
The supplied verified search results do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These fields remain unknown rather than being inferred from the manufacturer name or package suffix.
