LMP8278Q-Q1
Amplificador AEC-Q100 de detección de corriente de fase dividida y -2 V a 40 V con capacidad de filt
LMP8278Q-Q1
- TCVos ±15μV/°C Max
- CMRR 80 dB Min
- Input Offset Voltage ±2 mV max
- CMVR −2V to 40V
- Operating Ambient Temperature Range −40°C to 125°C
- Single Supply Operation
- Min / Max Limits 100% Tested unless Otherwise Noted
- LMP8278Q Available in Automotive AEC-Q100 Grade 1 Qualified Version
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The LMP8278 is a fixed 14x gain precision current sense amplifier. The part amplifies and filters small differential signals in the presence of high common mode voltages. The part operates from a single 5V supply voltage. With an input common mode voltage range from -2V to +28V the gain is very precise (±0.5%). The part can handle common mode voltages in the range -2V to +40V with relaxed specifications. The LMP8278 is a member of the Linear Monolithic Precision (LMP) family and is ideal for unidirectional current sensing applications. The parameter values that are shown in the Electrical Characteristics table are 100% tested and all bold values are also 100% tested over temperature, unless otherwise noted.
The part has a precise gain of 14x which is adequate in most targeted applications to drive an ADC to its full scale value. The fixed gain is achieved in two separate stages, a preamplifier with a gain of 7x and an output stage buffer amplifier with a gain of 2x. The connection between the two stages of the signal path is brought out on two pins to enable the possibility to create an additional filter network around the output buffer amplifier. These pins can also be used for alternative configurations with different gain as described in .
The LMP8278Q incorporates enhanced manufacturing and support processes for the automotive market, including defect detection methodologies. Reliability qualification is compliant with the requirements and temperature grades defined in the AEC Q100 standard.
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Documentación técnica
Tipo | Título | Fecha | ||
---|---|---|---|---|
* | Data sheet | LMP8278Q High Mode, 14 x Gain, Precision Sensing Amplifier datasheet (Rev. A) | 22 mar 2013 | |
Application note | Risks and Prevention of ESD, EOS, and Latch Up Events for Current Sense Amplifiers | PDF | HTML | 18 nov 2024 | |
E-book | An Engineer's Guide to Current Sensing (Rev. B) | 12 abr 2022 | ||
Application note | Using a PCB Copper Trace as a Current-Sense Shunt Resistor | PDF | HTML | 25 ene 2022 | |
EVM User's guide | AN-2223 LMP8278Q MSOP Evaluation Board User’s Manual (Rev. A) | 26 abr 2013 |
Diseño y desarrollo
Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.
LMP8278MMEVAL — Placa de evaluación LMP8278MM
The LMP8278Q Evaluation Board is designed to evaluate the LMP8278Q current sense amplifier.
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Encapsulado | Pines | Símbolos CAD, huellas y modelos 3D |
---|---|---|
VSSOP (DGK) | 8 | Ultra Librarian |
Pedidos y calidad
- RoHS
- REACH
- Marcado del dispositivo
- Acabado de plomo/material de la bola
- Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
- Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
- Contenido del material
- Resumen de calificaciones
- Monitoreo continuo de confiabilidad
- Lugar de fabricación
- Lugar de ensamblaje
Soporte y capacitación
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