DRV411

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Hall-Effect Magnetic Sensor Signal Conditioning IC for Closed-Loop Applications

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Product details

Parameters

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 open-in-new Find other Signal conditioners

Package | Pins | Size

HTSSOP (PWP) 20 42 mm² 6.5 x 6.4 VQFN (RGP) 20 16 mm² 4 x 4 open-in-new Find other Signal conditioners

Features

  • 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
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Description

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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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 8
Type Title Date
* Datasheet Sensor Signal Conditioning IC for Closed-Loop Magnetic Current Sensors datasheet (Rev. B) Dec. 12, 2013
White papers Achieve greater precision, reliability with magnetic sensing technology Jun. 26, 2017
Technical articles SigCon Architect: The keys to your high-speed design Oct. 27, 2015
Technical articles Six ways to sense current and how to decide which to use Jul. 10, 2015
Technical articles Current sensors and the bi-polar swing Apr. 10, 2015
Technical articles Make sense of an uncommon reference Mar. 06, 2015
Application notes Design Considerations for the DRV411 Feb. 26, 2015
User guides DRV411EVM User's Guide (Rev. A) Nov. 27, 2013

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
149
Description

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 bill (...)

Features
  • Full-featured evaluation board for the DRV411
  • Pin sockets for easily changing hall sensor devices during evaluation
  • Built in reference and gain setting options

Reference designs

REFERENCE DESIGNS Download
100A Closed-Loop Current Sensor Reference Design using Bi-Polar Supplies
TIPD184 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 (...)
document-generic Schematic document-generic User guide
Design files
REFERENCE DESIGNS Download
±50A Current Sensor using Closed-Loop Compensated Hall Element Reference Design
TIPD180 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 (...)
document-generic Schematic document-generic User guide
Design files

CAD/CAE symbols

Package Pins Download
HTSSOP (PWP) 20 View options
QFN (RGP) 20 View options

Ordering & quality

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