Data sheet

MA3
Description

Miniature Absolute Magnetic Shaft Encoder
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The MA3 is a miniature rotary absolute shaft encoder that reports the shaft position over 360 with no stops or gaps. TheMA3 is available with an analog or a pulse width modulated (PWM) digital output. Analog output provides an analog voltage that is proportional to the absolute s haft position. Analog output is onlyavailable in 10-bit resolution. PWM output provides a pulse width duty cycle that is proportional to the absolute shaft position. PWM output is available in 10-bit and 12-bit resolutions. Wh ile theaccuracy is the same for both encoders, the 12-bit version provides higher re solution. Three shaft torque versions are available. The standard torque version has a sleeve bushing lubricated with aviscous motion control gel to provide torque and feel that is ideal for front panel human interface applications. The no torque added option has a sleeve bushing and a low viscosity lubricant (t hat doesnot intentionally add torque) for low RPM applications where a small amount of torque is acceptable. The ball bearing version uses miniature precision ball bearings that are suitable for high speed andultra low torque applications. The shaft diameter for ball bearing ver sion option is 1/8" rather than 1/4". Connecting to the MA3 is simple. The 3-pin high retention snap-in 1.25mm pitch polarizedconnector provides for +5V, output, and ground.

Features
Patent pending Miniature size (0.48" diameter) Non-contacting magnetic single chip sensing technology -40C to 125C. operating temperaturerange 10-bit Analog output - 2.6 kHz sampling rate 10-bit PWM output - 1024 positions per revolution, 1 kHz 12-bit PWM output - 4096 positions per revolution, 250 Hz

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