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Acondicionadores de señal

DRV411

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IC de acondicionamiento de señal de sensor magnético Hall-Effect para aplicaciones de bucle cerrado

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DRV411

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Detalles del producto

Number of input channels 1 Features AFE for Magnetic Current Sensing Operating temperature range (°C) -40 to 125 Vs (min) (V) 2.7 Vs (max) (V) 5.5 Interface type Analog voltage Rating Catalog
Number of input channels 1 Features AFE for Magnetic Current Sensing Operating temperature range (°C) -40 to 125 Vs (min) (V) 2.7 Vs (max) (V) 5.5 Interface type Analog voltage Rating Catalog
HTSSOP (PWP) 20 41.6 mm² 6.5 x 6.4 VQFN (RGP) 20 16 mm² 4 x 4
  • Optimized for Symmetric Hall-Elements
    (for example, AKM HW-322, HW-302, or similar)
  • Spinning Current Hall Sensor Excitation
    • Elimination of Hall Sensor Offset and Drift
    • Elimination of 1/f Noise
  • Extended Current Measurement Range
    • H-Bridge Drive Capability: 250 mA
  • Precision Difference Amplifier:
    • Offset and Drift: 100 µV (max), 2 µV/°C (max)
    • System Bandwidth: 200 kHz
  • Precision Reference:
    • Accuracy: 0.2% (max)
    • Drift: 50 ppm/°C (max)
    • Pin-Selectable for 2.5 V, 1.65 V, and Ratiometric Mode
  • Overrange and Error Flags
  • Supply: 2.7 V to 5.5 V
  • Packages: 4-mm × 4-mm QFN and TSSOP-20 PowerPAD™
  • Temperature Range: –40°C to +125°C
  • Optimized for Symmetric Hall-Elements
    (for example, AKM HW-322, HW-302, or similar)
  • Spinning Current Hall Sensor Excitation
    • Elimination of Hall Sensor Offset and Drift
    • Elimination of 1/f Noise
  • Extended Current Measurement Range
    • H-Bridge Drive Capability: 250 mA
  • Precision Difference Amplifier:
    • Offset and Drift: 100 µV (max), 2 µV/°C (max)
    • System Bandwidth: 200 kHz
  • Precision Reference:
    • Accuracy: 0.2% (max)
    • Drift: 50 ppm/°C (max)
    • Pin-Selectable for 2.5 V, 1.65 V, and Ratiometric Mode
  • Overrange and Error Flags
  • Supply: 2.7 V to 5.5 V
  • Packages: 4-mm × 4-mm QFN and TSSOP-20 PowerPAD™
  • Temperature Range: –40°C to +125°C

The DRV411 is designed to condition InSb Hall elements for use in closed-loop current-sensor modules. The DRV411 provides precision excitation circuitry for the Hall-element effectively eliminating the offset and offset-drift of the Hall element. This device also provides a 250-mA H-bridge for driving the sensor compensation coil as well a precision differential amplifier to generate the output signal. The 250-mA drive capability of the H-bridge roughly doubles the current measurement range compared to conventional single-ended drive methods.

The Hall sensor front-end circuit and the differential amplifier employ proprietary offset cancelling techniques. These techniques, along with a high-accuracy voltage reference, significantly improve the accuracy of the overall current-sensor module. The output voltage is pin-selectable to support a 2.5-V output for use with a 5-V power supply, as well as 1.65-V for 3.3-V sensors.

For optimum heat dissipation, the DRV411 is available in thermally enhanced 4-mm × 4-mm QFN and TSSOP-20 with PowerPAD packages. The DRV411 is specified for operation over the full extended industrial temperature range of –40°C to +125°C.

The DRV411 is designed to condition InSb Hall elements for use in closed-loop current-sensor modules. The DRV411 provides precision excitation circuitry for the Hall-element effectively eliminating the offset and offset-drift of the Hall element. This device also provides a 250-mA H-bridge for driving the sensor compensation coil as well a precision differential amplifier to generate the output signal. The 250-mA drive capability of the H-bridge roughly doubles the current measurement range compared to conventional single-ended drive methods.

The Hall sensor front-end circuit and the differential amplifier employ proprietary offset cancelling techniques. These techniques, along with a high-accuracy voltage reference, significantly improve the accuracy of the overall current-sensor module. The output voltage is pin-selectable to support a 2.5-V output for use with a 5-V power supply, as well as 1.65-V for 3.3-V sensors.

For optimum heat dissipation, the DRV411 is available in thermally enhanced 4-mm × 4-mm QFN and TSSOP-20 with PowerPAD packages. The DRV411 is specified for operation over the full extended industrial temperature range of –40°C to +125°C.
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Documentación técnica

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Tipo Título Fecha
* Data sheet Sensor Signal Conditioning IC for Closed-Loop Magnetic Current Sensors datasheet (Rev. B) 12 dic 2013
White paper Achieve greater precision, reliability with magnetic sensing technology 26 jun 2017
Application note Design Considerations for the DRV411 26 feb 2015
EVM User's guide DRV411EVM User's Guide (Rev. A) 27 nov 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.

Placa de evaluación

DRV411EVM — Módulo de evaluación para IC de acondicionamiento de señal de sensor para sensores de corriente magn

The DRV411EVM is an evaluation platform for the DRV411, a sensor signal conditioning integrated circuit for closed loop magnetic current sensors. The DRV411EVM allows evaluation of all aspects of the DRV411 device when connected to a user supplied hall sensor and coil. Complete schematics and a (...)

Guía del usuario: PDF
No disponible en TI.com
Diseños de referencia

TIPD184 — Diseño de referencia de sensor de corriente de 100 A y bucle cerrado con suministros bipolares

This TI Precision Verified Design provides a complete 100 A closed loop Hall based current sensor solution using the DRV411 with bi-polar popwer supplies.  The DRV411 provides Hall excitation, a compensation coil driver and a precision difference amplifier in a single package.  The unique (...)
Guía del usuario: PDF
Esquema: PDF
Diseños de referencia

TIPD180 — Diseño de referencia de sensor de corriente de ±50 A con elemento de Hall compensado en bucle cerrad

This TI Precision Verified Design provides a complete closed loop Hall based current transducer signal conditioning solution.  The circuit features the DRV411 and is designed to accurately measure dc, ac and pulsed currents to +/-50 A with galvanic isolation between the primary and secondary (...)
Guía del usuario: PDF
Esquema: PDF
Paquete Pasadores Descargar
HTSSOP (PWP) 20 Ver opciones
VQFN (RGP) 20 Ver opciones
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Pedidos y calidad

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  • Marcado del dispositivo
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  • 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
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  • Lugar de fabricación
  • Lugar de ensamblaje

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