LM224J - 1MHz Quad 32V Op Amp | Texas Instruments
MPN： LM224J ✓ 啟用中LM224J 概覽
An operational amplifier is an analog integrated circuit that uses high open-loop gain to amplify voltage differences. The LM224 belongs to the voltage-feedback operational-amplifier hierarchy and can support closed-loop signal conditioning, sensing, buffering, and control functions. Internally frequency compensation removes the need for an external compensation network in common non-inverting and inverting amplifier configurations.
Key features include four independent amplifier sections, support for single or split supplies, a 1 MHz gain-bandwidth product, and a 0.5 V/µs slew rate. The verified distributor result describes a 32 V maximum supply-related rating, while another result reports operating from approximately ±1.5 V to ±16 V. These ranges describe complementary supply arrangements rather than conflicting absolute limits.
Technically, the LM224J uses a voltage-feedback architecture intended for general-purpose low-frequency signal paths. Its four channels provide useful channel density for multi-axis sensing, multi-channel conditioning, instrumentation, and embedded control. Because the verified results do not provide complete rail-to-rail, input-bias-current, offset-voltage, noise, or common-mode data, engineers should consult the official LM224 datasheet before setting precision or current-budget limits.
Typical uses include transducer buffering, temperature-signal conditioning, low-frequency filtering, industrial control, test equipment, and four-channel sensor interfaces. The 14-CDIP package favors through-hole industrial or legacy-style assemblies rather than compact surface-mount production.
Design with adequate output-current margin, stable feedback compensation for the selected gain and load, and supply-bypass capacitors placed close to the package. Check all electrical limits against the official datasheet, especially when using long feedback traces, high-value resistors, or low-noise sensor interfaces.
This page consolidates distributor availability, verified package and performance details, practical circuit guidance, and replacement analysis that are not presented together in the manufacturer product-page snippet.
直接替換替代品，適用於 LM224J — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： LM224J （相同外形與佔位） — 差異在於 Package, Amplifier Type, Mounting Type, Number of Amplifiers, Supply Configuration.
LM324J
✅ 直接替換聯絡詢價
查看資料表 →LM124J
✅ 直接替換📋 參考替代品（不在目錄中）
LM224J 最大額定值與電氣特性
| Amplifier Type | General Purpose |
| Number of Amplifiers | 4 circuits |
| Architecture | Voltage Feedback |
| Compensation | Internally Frequency Compensated |
| Maximum Supply Voltage | 32 V |
| Supported Supply Configuration | Single or Split Supply |
| Gain-Bandwidth Product | 1 MHz |
| Mouser-Reported Gain-Bandwidth Product | 1.2 MHz |
| Slew Rate | 0.5 V/µs |
| Reported Operating Supply Range | ±1.5 V to ±16 V |
| 封裝 | 14-CDIP, 0.300 inch, 7.62 mm pitch |
| 腳位數 | 14 pins |
| 安裝類型 | Through Hole |
| Temperature Grade | Military temperature |
| Reported Temperature Range | -25 °C to +85 °C |
| Packaging | Tube |
LM224J 14-cdip, 0.300 inch, 7.62 mm pitch 腳位配置指南
LM224J（14-cdip, 0.300 inch, 7.62 mm pitch 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： LM224J.
請參閱 資料表 以查看完整腳位配置。
典型應用
LM224J 適用於 6 應用s: Four-Channel Sensor Conditioning, Industrial Control and Instrumentation, Temperature Measurement Front End, Low-Frequency Active Filtering, Audio and Low-Level Signal Buffering, Test and Measurement Equipment.
Four-Channel Sensor Conditioning
The LM224J's four amplifier sections allow four low-frequency sensor channels to share one 14-CDIP package, reducing the number of discrete signal-conditioning stages. Its verified 1 MHz gain-bandwidth product and 0.5 V/µs slew rate suit bandwidths well below those limits, while the quad architecture simplifies paired buffering and amplification. The design must still verify input offset, bias current, common-mode range, output swing, and sensor-source impedance in the official datasheet. Keep each feedback loop compact and place supply bypass capacitance close to the device because long PCB traces or excessive feedback resistance can affect accuracy and stability.
推薦
Industrial Control and Instrumentation
LM224J is suitable as a candidate for low-frequency industrial instrumentation because it integrates four voltage-feedback operational amplifiers and supports single or split supplies. The verified 0.5 V/µs slew rate supports low-frequency control and measurement signals, and the 14-CDIP format is practical for through-hole industrial assemblies. Engineers should account for the complete common-mode and output-swing limits at the selected supply voltage. Feedback-component tolerances and source impedances should also be reviewed because the supplied data does not specify offset voltage or input bias current.
推薦
Temperature Measurement Front End
A quad LM224J can support several stages in a temperature-measurement front end, including signal amplification, buffering, active filtering, and output conditioning. Its 1 MHz nominal gain-bandwidth product provides margin for low-bandwidth sensors, while four channels reduce repeated package count in multi-point systems. The measured accuracy ultimately depends on verified offset, bias current, resistor accuracy, and sensor excitation, none of which are fully stated in the supplied snippets. Keep high-impedance sensor traces short and inspect datasheet guidance for noise and stability.
推薦
Low-Frequency Active Filtering
LM224J can implement active low-pass, high-pass, or other closed-loop filtering stages where a 1 MHz gain-bandwidth product and 0.5 V/µs slew rate exceed the signal-frequency requirement. Its internally compensated architecture simplifies basic amplifier stages, but the actual closed-loop bandwidth, allowable noise gain, and capacitive-load behavior must be confirmed in the official datasheet. Choose resistor and capacitor values against those limits rather than the headline bandwidth alone, and keep the feedback node compact to reduce parasitic pickup.
推薦
Audio and Low-Level Signal Buffering
LM224J can buffer low-level audio-control or instrumentation signals when the operating bandwidth is modest, because the verified 1 MHz gain-bandwidth product exceeds many sub-audio-band applications. The 0.5 V/µs slew rate limits large-signal performance and should be checked against waveform amplitude and frequency. Four channels also permit stereo or multichannel buffering in one through-hole package. For noise-sensitive audio paths, compare the LM224 input-voltage and input-current noise figures in the official datasheet before accepting it as an equal replacement for a dedicated low-noise amplifier.
推薦
Test and Measurement Equipment
The four channels in LM224J are useful in test and measurement equipment for low-frequency excitation, sensor conditioning, buffering, and active feedback networks. Its through-hole 14-CDIP package supports manual assembly and socket-based prototypes, while the 1 MHz gain-bandwidth product leaves useful margin below audio and instrumentation baseband frequencies. Designers must still verify output-current capability, input bias current, offset, and common-mode limits because those figures were not included in the verified snippets. Stable layout and accessible test points are especially important when multiple channels must interact through external analog circuitry.
推薦
推薦產品摘要
工程參考資料，適用於 LM224J — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | LM324J | LM124J |
|---|---|---|---|
| Package | 14-CDIP, 0.300 inch, 7.62 mm pitch | 14-CDIP family package | 14-CDIP family package |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Amplifier Count | 4 circuits | 4 circuits | 4 circuits |
| Amplifier Type | General Purpose | General Purpose | General Purpose |
| Supply Support | Single or split supply | Single or split supply family description | Single or split supply family description |
主要差異化特點
- Four independent amplifiers in one legacy through-hole package (對比LM2904N)
- Verified general-purpose bandwidth and slew-rate combination (對比LM324J)
- Single- and split-supply support for flexible legacy power architectures (對比LM124J)
設計說明
Use short, direct feedback paths and place supply-bypass capacitors at the package supply pins. The LM224J is a through-hole 14-CDIP device, so lead inductance and long analog traces can be especially noticeable at higher closed-loop gains. Keep the common return path continuous and separate from switching-current paths; confirm the exact pinout against the current Texas Instruments datasheet before drilling or wiring the board.
Do not treat 1 MHz as the usable closed-loop bandwidth at every gain. The closed-loop response, gain-bandwidth relationship, output-current capability, noise gain, and capacitive-load stability are separate constraints. Before substituting LM324J or LM124J, compare the official datasheets for pinout, common-mode range, output swing, offset voltage, bias current, slew rate, and temperature grade rather than relying on the shared quad-amplifier description.
For sensor interfaces, keep high-impedance inputs short, shield where appropriate, and avoid routing sensitive inputs beside digital clocks or relay wiring. Check the sensor's source impedance against the input-bias-current specification in the manufacturer datasheet because that value was not included in the verified snippets. Filter only after evaluating the required signal bandwidth; excessive capacitance at the amplifier output can reduce stability.
合規資訊
The verified web data does not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. A military temperature rating does not by itself establish AEC-Q100 qualification.
