AD22157 Просмотр технического описания (PDF) - Analog Devices

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производитель

AD22157

Wheel Speed Sensor For ABS Systems

Analog Devices 

AD22157

Sensor Circuit

NC

NC

Vlow

Vhigh

NC

4.7nF

ECU

Vbat_high

E (Battery Voltage)

T Vbat_low

75Ω

Cecu

27V

Supply to additional sensors

E Figure 6. Typical Connection in a Wheel Speed Sensing Application

L A typical automotive application is shown above. The digital output signal is developed across a 75

ohm resistor. The power supply to the device is conditioned in an ECU to limit “load dump” pulses to

27v.

SO Front of AD22157

faces the wheel

Magnet placed

B against the back side

O of the AD22157

Right: Pin 5 to Pin 1

Magnet

Pin 1

Wheel Front View

Package Rear View

Left: Pin 1 to Pin 5

Figure 7. Wheel Direction Diagram

-6-

REV. PrA

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