LM324MX/J7001601 - Quad Op Amp | Texas Instruments
MPN： LM324MX/J7001601 ✓ 啟用中LM324MX/J7001601 概覽
An operational amplifier is an analog integrated circuit that amplifies the difference between two input voltages. A quad operational amplifier contains four such amplifier sections, making it useful in systems that need several signal-conditioning functions at the same time. Its place in the electronics hierarchy is analog integrated circuit > operational amplifier > quad operational amplifier, and it is commonly used as a building block for sensing, buffering, filtering, amplification, and control circuits.
The principal product characteristics established for this ordering code are its four-amplifier configuration, low-power general-purpose design, 14-SOIC package, and commercial operating-temperature designation of 0 to 70 degrees Celsius. The 14-SOIC format supports conventional surface-mount PCB assembly while providing enough pins for four amplifier inputs, four outputs, power rails, and ground connections. A single package can therefore reduce component count and simplify board-level purchasing and assembly.
The LM324 family architecture is intended for practical analog signal paths rather than high-speed precision applications. Engineers should use the manufacturer datasheet to confirm input common-mode range, output swing, supply range, offset voltage, input bias current, slew rate, open-loop response, and output-current limitations before fixing a design. Those operating limits determine whether an application requires external bias compensation, output buffering, rail-to-rail signal coverage, or protection from input or output overvoltage.
Typical uses include four-channel sensing interfaces, buffered sensor outputs, active low-pass filters, sample-and-hold signal conditioning, current-loop instrumentation, analog control loops, and general-purpose amplifier boards. In each case, the four sections can process related or independent channels while sharing one package. The device can be particularly useful when the design needs more amplifier channels than a dual package provides but does not require the density of a higher-performance mixed-signal component.
For layout, keep input and feedback components close to their associated amplifier pins, route high-impedance signals with minimal leakage risk, and place input-biasing resistors where they can minimize leakage and parasitic capacitance. Confirm the polarity of feedback networks for each amplifier section because an incorrect connection can introduce unintended positive feedback and saturation. Decoupling capacitors should be placed at the power pins, and unused amplifier sections should be configured according to the manufacturer recommendations rather than left open.
This product summary combines package information, manufacturer documentation locations, practical application guidance, and same-family replacement analysis. It is intended to help engineers determine whether the 14-SOIC quad operational amplifier fits a legacy or new analog board before consulting the complete LM324 datasheet for electrical limits, test conditions, and ordering details.
直接替換替代品，適用於 LM324MX/J7001601 — 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： LM324MX/J7001601 （相同外形與佔位） — 差異在於 Package, Amplifier Type, Input Offset Voltage, Number of Amplifiers, Operating Class.
LM324MX
✅ 直接替換聯絡詢價
查看資料表 →LM324KADRG4
✅ 直接替換聯絡詢價
查看資料表 →LM324DRG4
✅ 直接替換聯絡詢價
查看資料表 →LM324DR
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →LM324KDR
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
LM324MX/J7001601 最大額定值與電氣特性
| Product Type | Quad operational amplifier |
| Number of Amplifier Channels | 4 channels |
| Operating Class | Low-power, general-purpose |
| 封裝 | 14-SOIC |
| Package Body Width | 0.154 in (3.90 mm) |
| 安裝類型 | Surface mount |
| 工作溫度範圍 | 0°C to 70°C |
| Manufacturer | Texas Instruments |
| Legacy Product Family | National Semiconductor LM324MX |
| RoHS 狀態 | compliant |
LM324MX/J7001601 0.154 in (3.90 mm) 腳位配置指南
LM324MX/J7001601（0.154 in (3.90 mm) 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： LM324MX/J7001601.
請參閱 資料表 以查看完整腳位配置。
典型應用
LM324MX/J7001601 適用於 6 應用s: Four-Channel Sensor Signal Conditioning, Active Low-Pass Filter Bank, Current-Loop Instrumentation Interface, Analog Control and Error Amplifier, Sample-and-Hold Signal Conditioning, Audio and Low-Frequency Amplification.
Four-Channel Sensor Signal Conditioning
LM324MX/J7001601 can support four independent sensor-conditioning channels because it integrates four general-purpose operational-amplifier sections in one 14-SOIC package. Each channel can provide non-inverting or inverting amplification, impedance conversion, or input buffering before conversion by an ADC. The low-power general-purpose architecture is appropriate for signals that do not require rail-to-rail inputs or high-speed operation. Before finalizing the circuit, confirm the sensor output range against the input common-mode limits, select feedback resistors for the required gain, and add protection if the sensor can generate transients. Decouple the supply pins locally and route each feedback loop close to its amplifier section to reduce parasitic effects.
Active Low-Pass Filter Bank
The four amplifier sections in LM324MX/J7001601 can implement multiple active low-pass filter stages, allowing designers to condition several measurement channels in parallel. A typical stage uses the amplifier with passive resistors and capacitors to establish a cutoff frequency and attenuation slope while providing gain. Because all four sections share one package, the circuit can remain compact on a 14-SOIC footprint. Component tolerances and amplifier noise contribute directly to filter response, so choose resistor and capacitor values from the design equations and validate stability in simulation. Keep sensitive input and feedback nodes short, maintain the specified load range, and verify operation across the intended supply voltage and 0°C to 70°C temperature range.
Current-Loop Instrumentation Interface
LM324MX/J7001601 is applicable to current-loop instrumentation when a two-to-20 mA signal must be converted into a voltage or conditioned before further processing. One amplifier section can provide the main signal conversion, while the remaining sections can implement gain, filtering, offset correction, or an output buffer. The common-mode input range and output swing must cover the complete loop signal, including excitation supply tolerance and sensor-current extremes. Use the 14-SOIC pin arrangement to keep the transimpedance and feedback components close to the relevant amplifier pins, and avoid routing the high-impedance summing node across the board. Check input bias-current error and output-drive requirements before choosing the feedback network.
Analog Control and Error Amplifier
LM324MX/J7001601 can implement error amplifiers in linear analog control loops, such as voltage regulation, current regulation, or slow closed-loop positioning systems. Each amplifier section compares a feedback signal with a reference and drives an external control network, while the other sections can monitor the reference, amplify a sensor signal, or buffer an output. Stable operation depends on the selected compensation and feedback topology, so analyze loop gain and phase margin with the actual load and capacitor values. Keep the high-gain feedback loop compact and isolate the output from capacitive loads that could reduce stability. Verify output-current and slew-rate requirements before applying it to a higher-bandwidth control path.
Sample-and-Hold Signal Conditioning
LM324MX/J7001601 can condition a sampled signal by providing buffer and gain stages ahead of a sample-and-hold network or by amplifying the held voltage for a downstream converter. The quad architecture allows the design to combine input buffering, scaling, offset adjustment, and output drive without requiring multiple single-amplifier packages. Leakage through the sampling capacitor, switch charge injection, amplifier input bias current, and output loading can affect accuracy, so include these effects in the error budget. Place the sampling capacitor close to the switching stage and keep the amplifier feedback paths short. Confirm the resulting signal bandwidth and output swing against the 0°C to 70°C operating range.
Audio and Low-Frequency Amplification
LM324MX/J7001601 can be used for low-frequency audio preamplification when the design values are not constrained to a high-performance audio amplifier. Its four sections can serve as microphone preamplifiers, tone-control stages, headphone-driver buffers, or low-level mixers. The general-purpose architecture makes it useful for cost- and power-conscious designs, but output swing, distortion, bandwidth, noise, and drive capability must be checked against the loudspeaker or load requirements. Use suitable input coupling and biasing networks, keep feedback components compact, and ensure that the selected load does not exceed the amplifier's output-current capability. Stable implementation with reactive speaker loads requires conservative gain and compensation choices.
工程參考資料，適用於 LM324MX/J7001601 — 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 | LM324MX | LM324KADRG4 | LM324DRG4 | LM324DR | LM324KDR |
|---|---|---|---|---|---|---|
| Package | 14-SOIC (0.154 in, 3.90 mm body width) | 14-SOIC - same package | 14-SOIC - same package | 14-SOIC - same package | 14-SOIC - same package | 14-SOIC - same package |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Special Ordering Features | J7001601 ordering code | Base LM324MX ordering code | KADR configuration suffix | DRG configuration suffix | DR configuration suffix | KDR configuration suffix |
主要差異化特點
- Four amplifier channels in one 14-SOIC package (對比LM324MX)
- Direct comparison path for an established 14-SOIC footprint (對比LM324DRG4)
- Legacy-compatible LM324 family architecture (對比LM324KADRG4)
設計說明
Use the manufacturer 14-SOIC land pattern and pin table rather than assigning amplifier functions from memory. Place supply-decoupling capacitors immediately across the power pins, keep each output close to its feedback network, and route high-impedance inputs with minimal exposed trace length. Four amplifier sections in one package do not share an ideal internal ground path; connect the ground pin with a low-impedance plane and evaluate ground bounce when several outputs change simultaneously.
Do not treat every LM324-family suffix as electrically identical to LM324MX/J7001601. The LM324MX ordering code, LM324KADRG4, LM324DRG4, LM324DR, and LM324KDR share the 14-SOIC architecture, but temperature grade, screening, acquisition status, and detailed limits can differ. Before substitution, compare the manufacturer specifications for supply voltage, common-mode range, output swing, offset, bias current, slew rate, and package dimensions.
Keep sensor inputs and summing junctions away from switching-regulator inductors, high-current traces, and board edges. If an input source has high source impedance, add a nearby low-leakage bias resistor and guard the node as appropriate, while accounting for input-bias-current error. Use short feedback loops and verify capacitive loading at the output, since added load can change stability, bandwidth, and the achievable output swing.
Place the power bypass network at the LM324MX/J7001601 rather than sharing distant supply-decoupling components with other analog sections. Confirm supply sequencing and the allowable supply range from the manufacturer datasheet before powering the board. Four simultaneously active channels can increase total supply current, so base the power-budget calculation on all four outputs and the intended load rather than one amplifier section alone.
合規資訊
The Full-Electronic product record identifies the device as RoHS compliant. No additional compliance status is asserted without a corresponding manufacturer statement.