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DRV411AIPWP

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

Packaging

Package | PIN: PWP | 20
Temp: Q (-40 to 125)
Carrier: Partial Tube
Qty Price
1-9 $3.82
10-24 $3.44
25-99 $3.20
100-249 $2.80
250-499 $2.63
500-749 $2.23
750-999 $1.89
1000+ $1.80

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

Texas Instruments  DRV411AIPWP

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.