AKL001-12 Datasheet AKL001-12, AKL001-12E, AKL002-12 | P1-P3

- 46 -

www.nve.com phone: 952-829-9217 fax: 952-829-9189

GT Sensors

Precision Gear Tooth and Encoder Sensors

NVE’s GT Sensor products are based on a Low Hysteresis GMR sensor material and are designed

for use in industrial speed applications where magnetic detection of gear teeth and magnetic encoder

wheels is required.

GT Sensors with both analog and digital outputs are available. The analog parts feature the large signal

and robust characteristics which NVE’s GMR materials are known for (NVE’s GMR sensors are not

damaged by extremely large magnetic fields). The sensor elements themselves are designed to provide

usable output with even the smallest gear teeth. Single and double output versions are available; the

second output is phase shifted with respect to the first, to provide quadrature for determining direction.

The digital sensors take advantage of the high

performance characteristics of GMR sensors to

provide a 50% duty cycle output with a wide

tolerance in airgap and temperature variations.

GT Sensors are available in low-profile MSOP8,

TDFN SO8, and TDFN6 packages, in order to

fit into the tightest possible spaces. An

evaluation kit is available, containing a selection

of sensors, magnets, and PCBs, so that the user

can test the parts in their application

- 47 -

www.nve.com phone: 952-829-9217 fax: 952-829-9189

ABL Sensors

Single/Double Bridge Gear Tooth And Encoder Sensors

Features:

• Large Airgap

• Direct Analog Output

• DC (Zero Speed) Operation

• Sine / Cosine Outputs

• Precise Spacing and Phase Shifting Between Sensor Elements

• Excellent Temperature and Voltage Performance

• Small, Low-Profile Surface Mount Packages

Applications:

• Linear and Angular Speed Sensing

• Linear and Angular Position Sensing

• Direction Detection

Description:

The ABL-Series GT Sensors are differential sensor elements that provide an analog sinusoidal output

signal when used with a bias magnet and gear tooth or a magnetic encoder. These chips use NVE’s

proprietary GMR sensor elements featuring an extremely large output signal from the raw sensor

element, which is stable over the rated temperature and voltage range. As a result, ABL-Series GT

Sensors feature excellent airgap performance and an extremely stable operating envelope as well as the

robust reliability characteristics that NVE sensors are known for.

Three different standard spacings are available for use with fine and coarse pitch encoders and gear

teeth. Both single bridge and double bridge configurations are also available. Double bridges are used

to generate sine/cosine outputs. In addition to the standard spacings, NVE can provide custom spacings

and multiple sensor elements tailored to the individual customer’s application for a nominal design and

tooling charge. Contact NVE for further details.

For digital output applications, these sensors can be used with NVE’s DD001-12 signal processing IC

which converts their output into a 50% duty cycle modulated current signal. This IC allows placement

of the ABL sensor in a very small housing with wires running from the sensor to the signal processing

IC in a remote location. Thus ABL-Series sensors can be used in M8 and smaller housings.

- 48 -

www.nve.com phone: 952-829-9217 fax: 952-829-9189

Specifications:

Parameter Min Typ Max Unit

Single Bridge Resistance at 25°C 4K 5K 7K Ohms

Input Voltage <1

Volts

Operating Temperature Range -50 +150

°C

Offset Voltage -4 +4 mV/V

Linear Range ±5 ±100 Oe

Linearity of Output 98 %

Hysteresis 2 %

Saturation of GMR Sensor Elements -180 +180 Oe

Single Resistor Sensitivity .04

%∆R/Oe

Max Output 80 mV/V

Temperature Coefficient of Resistance +0.11

%/°C

ESD 400 V

Storage Temperature Range -65 +170

°C

Notes:

1. ABL-Series sensors have a purely ratiometric output. They will operate with input voltages of 0.1 V or lower. The output

signal will scale proportionally with the input voltage. Maximum voltage will be limited by the power dissipation

allowable in the package and user installation. See the package section for more details.

2. Linearity and Hysteresis measured across linear operating range, unipolar operation.

3. Application of a magnetic field in excess of this value will saturate the GMR sensor elements and no further output will be

obtained. No damage occurs to the sensor elements when saturated. NVE GMR sensors will not be damaged by any large

magnetic field.

4. Percent change in resistance with application of 1 Oersted of magnetic field; corresponds to an 8% change in resistance

with 200 Oersteds of applied magnetic field (1 Oersted = 1 Gauss in air, or 0.1 milliTesla).

5. Pin-to-pin voltage, Human Body Model for ESD.

P1-P3 P4-P6 P7-P9 P10-P10

AKL001-12

Mfr. #:

Buy AKL001-12

Manufacturer:

Description:

MAGNETIC SWITCH SPEC PURP 8TDFN

Lifecycle:

New from this manufacturer.

Delivery:

DHL FedEx Ups TNT EMS

Payment:

T/T Paypal Visa MoneyGram Western Union

AKL001-12

AKL001-12

Products related to this Datasheet