Bourns ENA1J-B28-L00128L Rotary Optical Encoder

The EN model of encoder from Bourns is a self-contained, incremental, rotary optical device that produces a 2-bit quadrature signal output that is suitable for digital systems that require both magnitude and direction of adjustment data.

The device converts rotary input into digital output signals that can be used directly, without the need for analogue to digital conversion. The output signals are 90° phase shifted square waves that do not require the de-bounce circuitry that a mechanical type of device requires. The benefits of these features make it possible to reduce component count, circuit complexity, cost and also to increase performance and reliability.

Having a long life of 10,000,000 shaft revolutions and a compact, rugged body make this encoder suitable for use in extended service and limited space applications as a digital panel control or position sensing device.

• Two channel quadrature output
• Square wave signal
• Resolution 128 cycles per revolution
• CMOS and TTL compatible
• Long life
• Metal shaft and bushing
• IP40 rating
• Bourns type ENA1J-B28-L00128L