Honeywell AMR 2-Pin Speed Sensor Integrated Circuit VM721V1 Installation Guide

Installation Instructions for the

AMR 2-Pin Speed Sensor Integrated Circuit:

VM721V1

32336293

Issue B

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.

*Patent Pending

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

ESD SENSITIVITY:

CLASS 3

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 ≤ T

A

≤ 150°C, unless otherwise specified)

Characteristic

Supply voltage

Symbol

Vs

Condition

-40°C to 110°C

150°C

Min.

4.0

4.0

Typ.

—

—

Max.

24

9.0

Unit

V

Supply current:

high

low

Duty cycle

Output switching time:

rise time

fall time

Switching frequency

I

I

Sh t f

Sl

— t r f digital high state digital low state

— metering resistor, no bypass capacitor metering resistor, no bypass capacitor

—

12

5.9

40

—

—

—

14

6.95

50

—

—

—

16

8.0

60

8

8

35 mA

%

µ

s kHz

Table 2. Output Configuration

Characteristic

Number of pulses per pole

Condition

—

Configuration

1

Advanced Sensing Technologies

VM721V1

AMR 2-Pin Speed Sensor Integrated Circuit

Issue B

32336293

Table 3. Application Requirements (At 4.0 V ≤ V

S

≤ 24V, -40°C ≤ T

A

≤ 150°C)

Characteristic Symbol

B

Condition

D max

, max. air gap, max. temp.

Magnetic flux

Magnetic flux with valid output increased jitter

Metering resistor

B

R

D

— max

, max. air gap, max. temp.

Min.

±30

±10

10

Table 4. Absolute Maximum Ratings

Characteristic Symbol Condition

Operating temperature T a

—

Junction temperature

Storage temperature

Thermal resistance

Supply voltage

R

T

T

V

J

S q JA

S

—

—

—

—

Soldering temperature

ESD (HBM)

—

V

ESD

3 s max.

JEDEC JS-002-2014

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.

Figure 1. Maximum Supply Voltage Rating

Min.

-40 [-40]

-40 [-40]

-40 [-40]

—

-26.5

—

—

Typ.

—

—

100 to 300

Typ.

—

—

—

—

—

—

—

Max.

—

—

—

Max.

150 [302]

165 [329]

150 [302]

—

26.5

260 [500]

±6

Unit

Gauss

Gauss

Ohm

Unit

°C [°F]

°C [°F]

°C [°F]

°C/W

V

°C [°F] kV

NOTICE

Large, stray magnetic fields in the vicinity of the sensor may adversely affect sensor performance.

25

20

15

10

5

0

0 20 40 60 80 100

Temperature (°C)

120 140 160

2 Advanced Sensing Technologies

VM721V1

AMR 2-Pin Speed Sensor Integrated Circuit

Figure 2. Block Diagram

Vs

R

1

R

2

I

REG

V

REG

Issue B

32336293

I

REF

MR speed Amp speed

Comp speed

Figure 3. Basic Application Circuit

Sensor V

S

I

S

Control

Unit

Power

supply

Metering resistor

Figure 4. Rise and Fall Time Definition t r

= 10% to 90% rise time t f

= 90% to 10% fall time

I

Sh t on

I

Sl

Time

Figure 5. Transfer Characteristics

North Pole South Pole

14

7

Time

Advanced Sensing Technologies 3

VM721V1

AMR 2-Pin Speed Sensor Integrated Circuit

Figure 6. Sensor IC Mounting Orientation

Radial Axial

Issue B

32336293

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

Dimensions

Product ID

3,93

[0.15]

5,13

[0.20]

2X 0,4

[0.02]

0,73

[0.029]

0,73

[0.029]

2X 0,98

[0.038]

1,48

[0.06]

3,6

[0.14]

3,46

[0.15]

1,6

[0.62]

Date code

(three digits: year, week)

0,49

[0.20]

0,80

[0.03]

14,2

[0.56]

Pin 1 Pin 2

Product Marking

Work order number

(one digit: 1-9)

Manufacturing code

(one digit)

Sensing Element Edge Distance

2X 1,5

[0.06]

2,5

[0.10]

Pinout

Pin Number Symbol

1 V

S

2 GND

Function supply voltage ground

2X 0,38

[0.01]

D

MAX

= 1,02

[0.04]

4 Advanced Sensing Technologies

Honeywell Advanced Sensing Technologies

830 East Arapaho Road

Richardson, TX 75081 sps.honeywell.com/ast

32336293-B-EN | B | 05/21

© 2021 Honeywell International Inc.

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.

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