LM359MX/NOPB - Dual 400MHz Norton Amplifier | Texas Instruments
N.º de pieza: LM359MX/NOPB ✓ ActivoLM359MX/NOPB Descripción general
Alternativas directas para LM359MX/NOPB — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con LM359MX/NOPB (mismo factor de forma y huella) — difiere en Amplifier Type, Package, Packaging, Slew Rate, Architecture.
LM359M/NOPB
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Ver hoja de datos →LM359MX
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Ver hoja de datos →LM359MX/NOPB Valores máximos y características eléctricas
| 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 |
| Encapsulado | 14-pin SOIC (D), 0.154 in (3.90 mm) nominal width |
| Rango de temperatura de funcionamiento | 0 °C to 70 °C |
| Tipo de montaje | 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 |
Configuración de pines de LM359MX/NOPB
| Pin 1 | 1-INPUT — Current-mode input for amplifier 1 |
| Pin 2 | 1-INPUT — Current-mode input for amplifier 1 |
| Pin 3 | 1-GAIN — Programmable gain or bias-current connection for amplifier 1 |
| Pin 4 | 1-V+ — Positive supply connection for amplifier 1 |
| Pin 5 | 1-GAIN — Programmable gain or bias-current connection for amplifier 1 |
| Pin 6 | 1-OUTPUT — Output of amplifier 1 |
| Pin 7 | 2-OUTPUT — Output of amplifier 2 |
| Pin 8 | 2-GAIN — Programmable gain or bias-current connection for amplifier 2 |
| Pin 9 | 2-V+ — Positive supply connection for amplifier 2 |
| Pin 10 | 2-GAIN — Programmable gain or bias-current connection for amplifier 2 |
| Pin 11 | 2-INPUT — Current-mode input for amplifier 2 |
| Pin 12 | 2-INPUT — Current-mode input for amplifier 2 |
| Pin 13 | V- — Negative supply connection |
| Pin 14 | NC — Not connected (per manufacturer data sheet) |
Aplicaciones típicas
LM359MX/NOPB es adecuado para 6 aplicacións: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para LM359MX/NOPB — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | 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 |
Diferenciadores clave
- High-speed dual amplification in one package (frente a LM324D)
- Programmable current-mode operating characteristics (frente a MC1458D)
- Active ordering option with verified distributor availability (frente a LM359MX)
Notas de diseño
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.
Información de cumplimiento
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.
