LM359MX/NOPB - Dual 400MHz Norton Amplifier | Texas Instruments
MPN： LM359MX/NOPB ✓ 啟用中LM359MX/NOPB 概覽
直接替換替代品，適用於 LM359MX/NOPB — 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： LM359MX/NOPB （相同外形與佔位） — 差異在於 Amplifier Type, Package, Packaging, Slew Rate, Architecture.
LM359M/NOPB
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查看資料表 →LM359MX
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查看資料表 →LM359MX/NOPB 最大額定值與電氣特性
| Number of Amplifier Circuits | 2 circuits |
| Amplifier Type | Dual high-speed programmable current-mode (Norton) amplifier |
| Gain-Bandwidth Product | 400 MHz |
| Slew Rate | 60 V/µs |
| Supply Voltage Range | 5 V to 22 V |
| Maximum Supply Voltage | 22 V |
| 封裝 | 14-pin SOIC (D), 0.154 in (3.90 mm) nominal width |
| 工作溫度範圍 | 0 °C to 70 °C |
| 安裝類型 | Surface mount |
| Packaging | Tape and reel |
| Stable Inverting Closed-Loop Gain | 10 or greater |
| Input Stage | Current-differencing (Norton) input |
| Programmability | User-programmable amplifier operating characteristics |
| Low Bias Current | Low bias current |
LM359MX/NOPB 腳位配置
| 腳位 1 | 1-INPUT — Current-mode input for amplifier 1 |
| 腳位 2 | 1-INPUT — Current-mode input for amplifier 1 |
| 腳位 3 | 1-GAIN — Programmable gain or bias-current connection for amplifier 1 |
| 腳位 4 | 1-V+ — Positive supply connection for amplifier 1 |
| 腳位 5 | 1-GAIN — Programmable gain or bias-current connection for amplifier 1 |
| 腳位 6 | 1-OUTPUT — Output of amplifier 1 |
| 腳位 7 | 2-OUTPUT — Output of amplifier 2 |
| 腳位 8 | 2-GAIN — Programmable gain or bias-current connection for amplifier 2 |
| 腳位 9 | 2-V+ — Positive supply connection for amplifier 2 |
| 腳位 10 | 2-GAIN — Programmable gain or bias-current connection for amplifier 2 |
| 腳位 11 | 2-INPUT — Current-mode input for amplifier 2 |
| 腳位 12 | 2-INPUT — Current-mode input for amplifier 2 |
| 腳位 13 | V- — Negative supply connection |
| 腳位 14 | NC — Not connected (per manufacturer data sheet) |
典型應用
LM359MX/NOPB 適用於 6 應用s: High-Frequency Video Signal Conditioning, Communications Receiver Front End, Programmable Pulse Amplifier, Active Filtering and Frequency Shaping, Dual-Ended Instrumentation Amplification, Industrial Control Pulse Interface.
High-Frequency Video Signal Conditioning
The LM359MX/NOPB fits wideband video gain and conditioning blocks because its verified 400 MHz gain-bandwidth product and 60 V/µs slew rate provide ample closed-loop bandwidth for high-speed analog signals. Each of the two Norton amplifier channels can implement an inverting gain stage with stable operation emphasized for closed-loop gains of 10 or greater. The circuit should use short, controlled-impedance traces, maintain a continuous ground reference, and place compensation and feedback components close to the package. Designers must also confirm input common-mode range, output swing, and required video amplitude against the manufacturer data sheet before using the part in gain-of-10 or higher channels.
推薦
Communications Receiver Front End
The LM359MX/NOPB is suitable for selected communications receiver signal-conditioning stages requiring substantial bandwidth and slew capability. Its 400 MHz gain-bandwidth product supports closed-loop gain blocks above the manufacturer-stated stable inverting gain of 10, while the 60 V/µs slew rate helps preserve large-amplitude, high-frequency waveforms. Because the LM359 uses current-differencing inputs, the bias-current network and feedback components are central to the design rather than optional details. Keep the analog path compact, provide a low-impedance ground return, and verify source-impedance constraints and common-mode limits for the actual receiver front end.
推薦
Programmable Pulse Amplifier
The LM359MX/NOPB supports programmable pulse-amplifier circuits because the LM359 family was designed around current-mode operation and user-programmable amplifier characteristics. Two amplifiers in one 14-pin SOIC can provide related pulse-shaping or gain channels, while the 60 V/µs slew rate limits large-signal distortion for suitable waveform amplitudes and frequencies. The exact bias-current and feedback values must be calculated from the data sheet rather than copied from a conventional op-amp design. Engineers should test output loading, rise time, overshoot, and stability across process and temperature variation when shaping fast pulses.
推薦
Active Filtering and Frequency Shaping
The LM359MX/NOPB can serve as the active element in wideband filter and frequency-shaping networks where the 400 MHz gain-bandwidth product is useful and stable operation at an inverting closed-loop gain of 10 or greater is acceptable. Its current-mode input simplifies the calculation of bias current for resistor-based networks compared with a voltage-input topology. Component tolerances, parasitic capacitance, and feedback-loop layout can materially affect high-frequency filter response. Prototype and measure the completed network, use stable precision components where response accuracy matters, and verify that the operating signal remains inside the amplifier's documented input and output limits.
推薦
Dual-Ended Instrumentation Amplification
The two independent LM359MX/NOPB channels can support dual-ended instrumentation and balanced signal-conditioning arrangements where matched high-speed amplification is needed. The verified 400 MHz bandwidth and 60 V/µs slew rate are useful for wideband sensors and test equipment, although the current-mode architecture requires careful bias-current and feedback design. Matching between channels is not guaranteed merely because both amplifiers share one package, so system-level gain and phase matching must be measured if accuracy depends on it. Keep both channel layouts symmetrical and minimize connector-to-amplifier distance to preserve differential balance.
推薦
Industrial Control Pulse Interface
The LM359MX/NOPB can condition fast control or timing signals in industrial electronics where two high-speed amplifier channels and programmable current-mode behavior are useful. The component's 5 V to 22 V supply range permits positive-rail operation within documented limits, while its 60 V/µs slew rate supports faster edge transitions than conventional general-purpose amplifiers. The 0 °C to 70 °C version is appropriate for benign commercial or indoor conditions rather than harsh automotive environments. Validate noise immunity, output drive, timing margin, and stability over the full industrial temperature range expected by the equipment manufacturer.
推薦
推薦產品摘要
工程參考資料，適用於 LM359MX/NOPB — 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 | LM359M/NOPB | LM359MX |
|---|---|---|---|
| Package | 14-SOIC (D) | 14-SOIC (D), final suffix details require manufacturer-record confirmation | 14-SOIC (D) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Amplifier Type | Dual high-speed programmable current-mode (Norton) amplifier | Dual high-speed programmable current-mode (Norton) amplifier | Dual high-speed programmable current-mode (Norton) amplifier |
| Number of Circuits | 2 circuits | 2 circuits | 2 circuits |
| Gain-Bandwidth Product | 400 MHz | 400 MHz | 400 MHz |
| Slew Rate | 60 V/µs | 60 V/µs | 60 V/µs |
| Supply Voltage Range | 5 V to 22 V | 5 V to 22 V | 5 V to 22 V |
主要差異化特點
- High-speed dual amplification in one package (對比LM324D)
- Programmable current-mode operating characteristics (對比MC1458D)
- Active ordering option with verified distributor availability (對比LM359MX)
設計說明
Do not treat LM359MX/NOPB as a conventional voltage-input op amp. Its current-differencing inputs require the bias-current and feedback network specified by the Texas Instruments data sheet. Before fabrication, confirm the source impedance at each input, calculate the required programming resistors, and verify that the intended inverting closed-loop gain is at least 10, the family condition emphasized for stable operation.
Place feedback, gain-programming, and compensation components directly beside their associated LM359MX/NOPB pins. Keep both amplifier channels symmetrical when differential behavior matters, provide a continuous ground plane beneath the 14-pin SOIC, and avoid routing high-frequency outputs beneath the package. These steps minimize parasitic capacitance and feedback-loop delay that could reduce the practical benefit of the verified 400 MHz gain-bandwidth product and 60 V/µs slew rate.
Decouple each supply connection with short, low-inductance paths to suitable local bypass capacitors, following the capacitor values and layout recommended in the manufacturer data sheet. The LM359MX/NOPB supports a 5 V to 22 V supply range, but supply voltage alone does not establish output-current capability. Confirm output swing, load impedance, power dissipation, and thermal conditions at the intended supply and signal amplitude before production release.
合規資訊
The supplied verified product information does not explicitly provide RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations for LM359MX/NOPB. The verified 0 °C to 70 °C operating range does not establish automotive qualification.
