LM2904P - Dual 26V 700kHz Op Amp | Texas Instruments
料号： LM2904P ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0.1491 | $0.15 |
| 10 | $0.1491 | $1.49 |
| 100 | $0.1491 | $14.91 |
| 500 | $0.1491 | $74.55 |
| 1,000 | $0.1491 | $149.10 |
LM2904P 概述
An operational amplifier is an analog integrated circuit that uses high open-loop gain to amplify the difference between two input voltages. In a closed-loop configuration, external feedback components define the gain, bandwidth, filtering, and signal behavior. The LM2904P belongs to the broader hierarchy of operational amplifier, analog amplifier, and semiconductor, while its dual configuration saves board area by placing two amplifiers in one package.
The verified manufacturer information identifies a maximum 26 V supply-related range and 700 kHz performance. The package is 8-PDIP. Texas Instruments describes the LM2904 as an industry-standard dual operational amplifier family, but the supplied verified data does not include a complete electrical parameter table. Consequently, input offset voltage, input bias current, output current, noise, common-mode range, slew rate, operating temperature, and exact electrical limits are marked as data needed rather than inferred.
LM2904P circuits are commonly considered for sensor amplification, buffered analog signals, low-frequency active filters, and general-purpose control loops. Because it is a standard dual amplifier in a through-hole package, it is especially useful for prototypes, educational boards, legacy equipment, and industrial control systems where DIP packaging simplifies manual assembly and inspection. The second amplifier can mirror the first stage, provide filtering, buffer an output, or implement another independent channel.
Designers should verify supply polarity, input common-mode limits, output swing, stability with the selected load, and capacitor values against the full manufacturer datasheet before production use. Decoupling capacitors should be placed close to the supply pins, and feedback components should be kept compact to reduce parasitic capacitance. If low-noise, rail-to-rail input/output, high-frequency, or automotive-qualified performance is required, a different amplifier family should be selected after reviewing the complete electrical data.
This page consolidates the verified Texas Instruments product description, distributor identification, and package information with engineering guidance, comparison points, and procurement-oriented details for LM2904P users.
直接替换替代料： LM2904P ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： LM2904P （相同外形与封装尺寸） ——差异在于 Package, Mounting Type, Input Offset Voltage, Number of Channels, Slew Rate.
快速对比工具——选择替代料号进行并排对比：
LM2904D
✅ 直接替换✓ 有现货
$0.1 / 个
查看数据手册 →LM2904BIDR
✅ 直接替换✓ 有现货
$0.13 / 个
查看数据手册 →LM2904BA
✅ 直接替换📋 参考替代料（不在目录中）
LM2904P 最大额定值与电气特性
| Product Type | Dual operational amplifier |
| Number of Amplifiers | 2 |
| Maximum Supply Voltage | 26 V |
| Gain-Bandwidth Product | 700 kHz |
| 封装 | 8-PDIP |
| 安装类型 | Through-hole |
| Product Classification | Standard general-purpose amplifier |
LM2904P 8-pdip 引脚配置指南
LM2904P（8-pdip 封装）的引脚配置。 该模拟元件具有输入、输出和电源引脚。请参阅制造商数据手册以了解失调调零、补偿和使能引脚配置。适用于信号调理和放大器电路。
暂无详细引脚数据： LM2904P.
请参阅 数据手册 以查看完整引脚配置。
典型应用
LM2904P 适用于 6 应用s: Sensor Signal Conditioning, Active Low-Frequency Filters, Industrial Control Loops, Audio Preamplifier, Buffered Data Acquisition, Legacy Instrument and Educational Designs.
Sensor Signal Conditioning
The LM2904P is suitable for ordinary low-frequency sensor interfaces where two general-purpose amplifiers can condition signals in one 8-PDIP package. One amplifier can amplify a sensor output while the other buffers or filters the result. The 700 kHz gain-bandwidth product provides useful bandwidth for many low-speed measurements, while the 26 V supply-related rating supports higher-voltage industrial signal paths. Before finalizing the circuit, verify input common-mode range, output swing, offset voltage, bias current, and stability against the complete Texas Instruments datasheet.
推荐
Active Low-Frequency Filters
The LM2904P can implement active filters and signal-shaping networks when the desired bandwidth is well below its 700 kHz gain-bandwidth product. The dual package allows two filter sections or a filter plus buffer in a single through-hole device. Feedback resistors and capacitors should be selected from the complete datasheet and checked against source and load impedance, because stability and closed-loop bandwidth depend on the exact topology. A DIP footprint also simplifies prototype rework and through-hole inspection.
推荐
Industrial Control Loops
LM2904P is a practical choice for general industrial control and instrumentation prototypes that need a conventional dual op amp, a 26 V supply-related rating, and a straightforward DIP package. It can implement error amplifiers, comparators with hysteresis, current or voltage feedback stages, and actuator-driver signal conditioning. The design must keep input and output voltages inside the verified operating limits and account for load drive and noise. For safety-critical or precision systems, check whether the LM2904 family provides the required qualification and accuracy.
推荐
Audio Preamplifier
The LM2904P may be used for modest audio preamplification or line-stage buffering when the circuit does not require low-noise, high-precision, or rail-to-rail performance. The dual arrangement allows one stage for gain and another for buffering or tone shaping. Its 700 kHz gain-bandwidth product is more than adequate for many audio-bandwidth paths, but input voltage range, output swing, noise, distortion, supply configuration, and load compatibility must be verified. The supplied data does not quantify audio noise or distortion, so those specifications must come from the manufacturer datasheet.
推荐
Buffered Data Acquisition
The LM2904P can buffer moderate-bandwidth analog signals in data-acquisition and test-equipment front ends when its input range, offset, bias current, and output drive meet the system requirements. One amplifier can provide high impedance input buffering while the second handles gain or active filtering. This is useful for reducing source-loading effects, but the input capacitance, sensor impedance, settling behavior, and noise must be checked. The 8-PDIP package supports through-hole prototypes and educational or legacy test boards, while the 26 V supply-related rating allows dual-supply test circuits when the complete limits permit.
推荐
Legacy Instrument and Educational Designs
The LM2904P is well suited to legacy instrumentation, training boards, and educational circuits because it is a standard dual operational amplifier in an 8-PDIP package. The through-hole format simplifies manual assembly, troubleshooting, and socket-based prototyping. Designers can use the two amplifiers for independent gain stages, differential-style buffering, or feedback networks while retaining a familiar DIP footprint. Because the verified results do not provide complete pin assignments or electrical limits, prototypes should be checked against the current Texas Instruments LM2904 documentation before wiring or publication.
推荐
推荐产品汇总
工程参考数据： LM2904P ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | LM2904D | LM2904B | LM2904BA |
|---|---|---|---|---|
| Package | 8-PDIP | 8-PDIP claimed for drop-in comparison; exact package verification required | 8-PDIP claimed for drop-in comparison; exact package verification required | 8-PDIP claimed for drop-in comparison; exact package verification required |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
关键差异点
- Verified 26 V supply-related rating （对比 LM2904B)
- Verified 700 kHz gain-bandwidth product （对比 LM2904BA)
- Dual general-purpose architecture in 8-PDIP （对比 LM2904D)
设计说明
Place the supply-bypass capacitor as close as possible to the LM2904P supply pins and keep the ground return short and continuous. For a dual amplifier in an 8-PDIP package, route both amplifier sections with symmetrical, low-loop-area feedback paths. Because the verified data does not state the exact pin assignments or recommended capacitor values, use the manufacturer application guidance rather than selecting values from memory.
Do not assume that 26 V is a universal operating point for every LM2904P circuit. Verify the absolute maximum and recommended supply limits, input common-mode range, output swing, input offset, bias current, and load drive in the complete datasheet. The same caution applies when comparing LM2904P with LM2904D, LM2904B, or LM2904BA: family membership alone does not prove pin-to-pin replacement.
Keep feedback resistors and capacitors close to the relevant amplifier pins and avoid long traces around high-impedance inputs. At the stated 700 kHz gain-bandwidth product, the closed-loop bandwidth depends on the selected noise gain; higher noise gain reduces usable bandwidth. Verify stability with the intended source and load impedance, especially when sensor output capacitance or long wiring is present.
合规信息
Compliance status is not provided in the supplied verified manufacturer or distributor data. No assumption has been made.
