GENERAL INFORMATION

Honeywell’s Anisotropic Magnetoresistive (AMR) 2-Pin Speed Sensor Integrated Circuit (IC) is designed to detect the speed of a ring magnet encoder target using a unique* bridge design.
The frequency of the digital supply current is proportional to the rotational speed of the target, and works over a wide range of speeds, temperatures and air gaps.

CAUTION
ELECTROSTATIC DISCHARGE DAMAGE

  • Ensure proper ESD precautions are followed when handling this product.
  • Failure to comply with these instructions may result in product damage.

CAUTION
ELECTROSTATIC SENSITIVE DEVICES
DO NOT OPEN OR HANDLE EXCEPT AT A STATIC FREE WORKSTATION

SOLDERING AND ASSEMBLY

CAUTION
IMPROPER SOLDERING

  • Ensure leads are adequately supported during any forming/shearing operation so that they are not stressed inside the plastic case.
  • Limit exposure to high temperatures.

Failure to comply with these instructions may result in product damage.

Wave solder at 250°C to 260°C [482°F to 500°F] for a maximum of three seconds. Burrs are allowed only if full lead length will pass through a 0,68 mm [0.027 in] dia. hole.

CLEANING

CAUTION
IMPROPER CLEANING

  • Do not use pressure wash. High-pressure stream could force contaminants into the package.
  • Failure to comply with these instructions may result in product damage.

Use agitated rinse to clean the sensor.

Table 1. Operating Characteristics (Over entire supply voltage range at -40°C ≤ TA ≤ 150°C, unless otherwise specified)

CharacteristicSymbolConditionMin.Typ.Max.Unit
Supply voltageVs-40°C to 110°C4.024V
150°C4.09.0
Supply current:
high lowISh ISldigital high state digital low state125.9146.95168.0mA
Duty cycle405060%
Output switching time:
rise time fall timettfmetering resistor, no bypass capacitor metering resistor, no bypass capacitor— —— —88ms
Switching frequencyf35kHz

Table 2. Output Configuration

CharacteristicConditionConfiguration
Number of pulses per pole1

Table 3. Application Requirements (At 4.0 V ≤ VS ≤ 24V, -40°C ≤ TA ≤ 150°C

CharacteristicSymbolConditionMin.Typ.Max.Unit
Magnetic fluxBDmax, max. air gap, max. temp.±30Gauss
Magnetic flux with valid output increased jitterBDmax, max. air gap, max. temp.±10Gauss
Metering resistorR10100 to 300Ohm

Table 4. Absolute Maximum Ratings

CharacteristicSymbolConditionMin.Typ.Max.Unit
Operating temperatureTa-40 [-40]150 [302]°C [°F]
Junction temperatureTJ-40 [-40]165 [329]°C [°F]
Storage temperatureTS-40 [-40]150 [302]°C [°F]
Thermal resistanceRqJA°C/W
Supply voltageVS-26.526.5V
Soldering temperature3 s max.260 [500]°C [°F]
ESD (HBM)VESDJEDEC JS-002-2014±6kV

NOTICE

Absolute maximum ratings are the extreme limits the device will momentarily withstand without damage to the device.
Electrical and mechanical characteristics are not guaranteed if the rated voltage and/or currents are exceeded, nor will the device necessarily operate at absolute maximum ratings.
Large, stray magnetic fields in the vicinity of the sensor may adversely affect sensor performance.

Maximum Supply Voltage Rating

Figure 1. Maximum Supply Voltage Rating

Maximum Supply Voltage Rating

Block Diagram

Figure 2. Block Diagram

Block Diagram

Basic Application Circuit

Figure 3. Basic Application Circuit

Basic Application Circuit

Figure 4. Rise and Fall Time Definition

Rise and Fall Time Definition
  • tr = 10% to 90% rise time
  • tf = 90% to 10% fall time

Figure 5. Transfer Characteristics

Transfer Characteristics

Sensor IC Mounting Orientation

Figure 6. Sensor IC Mounting Orientation

  • Radial
    Sensor IC Mounting Orientation
  • Axial
    Sensor IC Mounting Orientation

Dimensions and Product Marking

Figure 7. Dimensions and Product Marking (For reference only mm/[in])

  • Dimensions
    Dimensions
  • Product Marking
    Product Marking
  • Sensing Element Edge Distance
    Sensing Element Edge Distance

WARNING
RISK TO LIFE OR PROPERTY
Never use this product for an application involving serious risk to life or property without ensuring that the system as a whole has been designed to address the risks, and that this product is properly rated and installed for the intended use within the
overall system.
Failure to comply with these instructions could result in death or serious injury.

Warranty/Remedy

Honeywell warrants goods of its manufacture as being free of defective materials and faulty workmanship during the applicable warranty period. Honeywell’s standard product warranty applies unless agreed to otherwise by Honeywell in writing; please refer to your order acknowledgement or consult your local sales office for specific warranty details. If warranted goods are returned to Honeywell during the period of coverage, Honeywell will repair or replace, at its option, without charge those items that Honeywell, in its sole discretion, finds defective.

The foregoing is buyer’s sole remedy and is in lieu of all other warranties, expressed or implied, including those of merchantability and fitness for a particular purpose. In no event shall Honeywell be liable for consequential, special, or indirect damages.

While Honeywell may provide application assistance personally, through our literature and the Honeywell web site, it is buyer’s sole responsibility to determine the suitability of the product in the application.

Specifications may change without notice. The information we supply is believed to be accurate and reliable as of this writing. However, Honeywell assumes no responsibility for its use.

Contact Us

For more information

Honeywell Advanced Sensing Technologies services its customers through a worldwide network of sales offices and distributors.
For application assistance, current specifications, pricing or the nearest Authorized Distributor, visit sps.honeywell.com/ast or call:

Asia Pacific +65 6355-2828
Europe  +44 (0) 1698 481481
USA/Canada +1-800-537-6945

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Documents / Resources

Honeywell AMR 2-Pin Speed Sensor Integrated Circuit VM721V1 [pdf] Installation Guide
AMR 2-Pin Speed Sensor Integrated Circuit, VM721V1, 32336293

References

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