AKL Datasheet, PDF (1/3 Pages) Altech corporation – Polystyrene and Polycarbonate - 150x300mm (5.91x11.81in.)

AKL Sensors
AKL Sensors
Digital Output Gear Tooth And Encoder Sensors
Features:
⇒ Large Airgap
⇒ 50% Duty Cycle
⇒ DC (Zero Speed) Operation
⇒ Precise Spacing Between Sensor Elements
⇒ Excellent Temperature and Voltage Performance
⇒ Small, Low Profile Surface Mount Package
Applications:
⇒ Anti-lock Brake System Sensors
⇒ Transmission Speed Sensors
⇒ Industrial Linear and Angular Speed Sensing
⇒ Linear and Angular Position Sensing
Description:
NVE offers these products specifically for use as sensors for gear tooth wheels or
magnetic encoders with a digital output signal. The pulse output from the sensor
corresponds with the gear teeth passing in front of it. When a gear tooth or magnetic pole
is in front of the sensor, the sensor’s output goes high; when the gear tooth or magnetic
pole moves away, the output returns to low. This repeats at every tooth/pole, resulting in
a pulse train output that provides speed information from the gear or encoder. Three part
numbers are currently available: the AKL001-12 is designed for gear teeth or encoders
with a pitch of 2.5 to 6mm, the AKL002-12 for a pitch of 1 to 2.5mm, and the AKL003-
12 for a pitch of 0.6 to 1.5mm.
In order to minimize the number of wires leading to the sensor, the part is configured as a
two wire device. The two output states are indicated with a change of current through the
part. Therefore, when the part is in the digital low state, current is about 3mA. When the
part is in the digital high state, the current increases to about 10mA. If necessary, the 2-
wire output of the AKL series parts can be easily converted to a 3-wire current sinking
output with the circuit shown in the GT Sensor applications section.
The parts are rated for the full automotive and industrial temperature range,
-40°C to +150°C. They feature reverse battery protection, and have an operational
voltage range of 4.5V to 48V. They operate from DC to 10 KHz. The parts are available
in low profile, surface mount TDFN SO8 packages.
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