LM224N - Quad 32V 1.2MHz Op Amp | Texas Instruments
料号： LM224N ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0.179 | $0.18 |
| 10 | $0.179 | $1.79 |
| 100 | $0.179 | $17.90 |
| 500 | $0.179 | $89.50 |
| 1,000 | $0.179 | $179.00 |
LM224N 概述
An operational amplifier is an analog building block that uses high open-loop gain to amplify the difference between two input voltages. LM224 devices contain four independently usable amplifiers, allowing one package to implement sensing, buffering, amplification, filtering, or control functions. The LM224N family is commonly associated with single- and dual-supply operation, making it relevant to industrial control, instrumentation, sensor interfaces, and low-frequency analog signal chains.
The LM224N combines four amplifiers, a 32 V maximum supply rating, and a 1.2 MHz bandwidth in one 14-pin PDIP package. The verified distributor listing identifies the device as a standard general-purpose amplifier with four circuits and a 14-PDIP package. Its quad configuration can reduce component count and board area in designs that need several similar amplifier stages.
The LM224N is intended for general-purpose analog applications where a conventional high-voltage-capable op amp is appropriate. Its internally compensated architecture makes it useful for non-inverting and inverting amplifier stages, voltage followers, comparators, and basic active-filter stages when the circuit requirements fall within the datasheet limits. The package and electrical details should be checked against the selected manufacturer datasheet before layout release.
Typical applications include sensor signal conditioning, industrial process monitoring, instrumentation amplifiers, current-voltage conversion, audio and communications support circuits, and embedded control systems. Using four amplifiers in one package is especially useful when several channels need similar conditioning characteristics, such as monitoring multiple sensor inputs.
Designers should verify supply voltage, input common-mode range, output swing, offset voltage, slew rate, stability, and temperature limits against the applicable datasheet. Decoupling capacitors should be placed close to the supply pins, and unused amplifier inputs should be configured according to the manufacturer recommendations rather than left floating.
This page combines the verified Texas Instruments and distributor data with practical package, application, sourcing, and replacement guidance. It distinguishes confirmed facts from parameters that require verification against the full manufacturer datasheet, helping engineers evaluate the LM224N without relying on assumptions.
直接替换替代料： LM224N ——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： LM224N （相同外形与封装尺寸） ——差异在于 Amplifier Count, Architecture, Gain-Bandwidth Product, Maximum Supply Voltage, Package.
快速对比工具——选择替代料号进行并排对比：
LM224N
✅ 直接替换✓ 有现货
$0.179 / 个
查看数据手册 →LM224AN
✅ 直接替换📋 参考替代料（不在目录中）
LM324N
✅ 直接替换✓ 有现货
联系询价
查看数据手册 →LM324AN
✅ 直接替换📋 参考替代料（不在目录中）
LM224N 最大额定值与电气特性
| Amplifier Count | 4 circuits |
| Product Type | Quad operational amplifier |
| Maximum Supply Voltage | 32 V |
| Gain-Bandwidth Product | 1.2 MHz |
| Slew Rate | 0.5 V/us |
| 封装 | 14-PDIP |
| 引脚数量 | 14 pins |
| 安装类型 | Through-hole |
LM224N 14-pdip 引脚配置指南
LM224N（14-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： LM224N.
请参阅 数据手册 以查看完整引脚配置。
典型应用
LM224N 适用于 6 应用s: Industrial Sensor Signal Conditioning, Temperature Monitoring Interface, Basic Active Filter and Equalizer, Audio and Communication Support Circuit, Process Control Data Acquisition, Embedded Control Analog Front End.
Industrial Sensor Signal Conditioning
The LM224N fits industrial sensor signal conditioning because it combines four amplifier circuits in one 14-PDIP package and provides a verified 1.2 MHz gain-bandwidth product. Each channel can buffer, amplify, or perform basic active filtering for pressure, temperature, and position sensors. The 32 V maximum supply rating is useful for interfaces that operate from higher-voltage control systems, although input common-mode range and output swing must be confirmed from the selected datasheet. In a practical design, place bypass capacitors near the supply pins and keep sensor traces away from switching nodes. Verify offset voltage and bias current against the sensor’s accuracy budget, then confirm stability with the selected feedback network.
推荐
Temperature Monitoring Interface
A temperature-monitoring interface can use one LM224N amplifier for sensor conditioning and another channel for filtering or reference buffering. The four-amplifier architecture reduces the number of packages needed when several analog signals must be brought into a common voltage range. With a verified 1.2 MHz gain-bandwidth product, the device is suitable for many slow thermal signals, but the actual useful bandwidth depends on gain, load, and compensation. Confirm the input range for the sensor output, keep the output within the amplifier’s specified swing, and use a stable reference arrangement to avoid drift. The 14-PDIP format also makes it straightforward to prototype and replace in industrial control boards.
推荐
Basic Active Filter and Equalizer
LM224N can implement basic low-frequency active-filter and equalizer stages because it provides four general-purpose amplifier channels and a verified 1.2 MHz gain-bandwidth product. Multiple amplifier sections may be useful for first-order or modest-bandwidth filters, gain blocks, and signal-shaping networks. Designers should calculate resistor and capacitor values around the required cutoff frequency, then verify phase margin and output behavior with the actual load. The LM224N is not a rail-to-rail precision amplifier by implication from the available data, so input and output headroom must be checked carefully. Use the manufacturer’s recommended bypass capacitors and maintain short feedback paths to reduce noise pickup and oscillation risk.
推荐
Audio and Communication Support Circuit
The LM224N can serve in audio and communication support circuits when the signal bandwidth is low enough for the verified 1.2 MHz gain-bandwidth product. Its four channels can provide preamplifier, buffer, mixer, or gain-control blocks in a general-purpose analog board. The 32 V maximum supply rating may help in equipment with multiple internal rails, although the exact supply range and input/output swing must be verified for the chosen manufacturer. Avoid using the LM224N for demanding low-noise, high-linearity, or high-frequency audio paths without checking offset, noise, slew rate, and distortion specifications. A star ground and short signal paths are important when several channels share a sensitive analog ground.
推荐
Process Control Data Acquisition
LM224N is appropriate for low-frequency process-control acquisition when several analog channels require similar amplification. The quad package can handle four sensor or actuator interfaces, reducing component count and simplifying board layout. Its verified 32 V maximum supply rating is useful for industrial control environments, but surge, noise, and grounding requirements remain system-level concerns. Use shielded sensor wiring, star grounding, and input protection appropriate to the measured signals. Confirm amplifier input bias current, offset voltage, common-mode range, and output capability from the exact datasheet, especially when the acquisition node sits close to a supply rail. Validate calibration offsets over the intended temperature range before production release.
推荐
Embedded Control Analog Front End
An embedded-control board can place LM224N between sensor outputs and an ADC or controller input to provide buffering and gain. Four independent channels are useful when the controller board must process multiple analog conditions while keeping the implementation simple. The verified 1.2 MHz bandwidth is more than adequate for many slow control loops, but the selected amplifier must remain inside its input and output voltage limits. Confirm the ADC input range, sampling rate, and settling requirements, then use the LM224N bandwidth as only one part of the complete signal-chain analysis. A solid ground plane, local supply decoupling, and short feedback traces are especially important near microcontroller and switching-regulator circuitry.
推荐
推荐产品汇总
工程参考数据： LM224N ——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 | LM224N | LM224AN | LM324N | LM324AN | LM2902N |
|---|---|---|---|---|---|---|
| Package | 14-PDIP | 14-MDIP - verified onsemi listing; package naming requires confirmation | 14-PDIP - candidate package requires confirmation | 14-PDIP - related family candidate | 14-PDIP - related family candidate | 14-PDIP - related family candidate |
| Brand | Texas Instruments | onsemi | Analog Devices | Texas Instruments | onsemi | onsemi |
关键差异点
- Four integrated amplifier channels （对比 LM2902N)
- Verified 32 V maximum supply rating （对比 LM324N)
- 1.2 MHz gain-bandwidth product （对比 LM324N)
- 14-pin PDIP implementation （对比 LM2902N)
设计说明
Use the exact 14-pin PDIP footprint associated with the selected manufacturer and verify pin 1 orientation against the package drawing before fabrication. Place supply-bypass capacitors near the power pins and keep input and feedback traces short. Since the verified data identifies a through-hole package, allow adequate board-edge clearance for insertion and consider mechanical mounting requirements in addition to electrical routing.
Route each amplifier’s input, feedback, and output paths away from switching-regulator nodes and high-current return paths. Use a continuous ground plane where practical and connect analog return currents close to the amplifier supply pins. The verified 1.2 MHz gain-bandwidth product is adequate for many low-frequency signals, but feedback-network layout still determines practical noise, settling, and stability behavior.
Do not substitute LM324-family or LM2902-family devices solely because they are similar op amps. LM2902 is a dual-amplifier family rather than a direct four-channel match, while LM324-family temperature and electrical limits may differ from LM224N. Confirm amplifier count, pinout, package, supply range, common-mode range, offset voltage, bias current, slew rate, and temperature grade before releasing a substitution.
合规信息
Compliance status was not provided in the verified web data. Obtain current manufacturer declarations before production release.
