Maintaining the high resolution (A/B phase) of the conventional product SMD-01B, the origin detection function (Z phase) has been added, and the operating temperature range has been expanded.
The SMD-04B is a high-precision optical encoder IC that utilizes a diffraction image projection method. The SMD-04B integrates an OEIC (Opto-Electric Integrated Circuit) and an LED in a single package. It projects light emitted from the LED onto a scale and detects the relative movement between the SMD-04B and the scale by receiving the diffracted image of the reflected light with a photodiode. Additionally, by providing a pattern for origin detection on the scale, it outputs the Z phase, which is the origin signal. Furthermore, by arranging the photodiodes in an array at the receiving section, it minimizes the degradation of phase characteristics due to mounting accuracy.
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basic information
- Package: HCOB14 5.3×4.3×1.0mm - Power Supply Voltage: 4.5–5.25V - Current Consumption: 22mA - Operating Temperature Range: -30 to +85℃ - High-precision A/B phase analog output with output cycle (20µm/cycle) - No dedicated track required for Z phase on the scale side - Built-in LED dimming function with APC circuit
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Applications/Examples of results
- OA equipment: MFP, polygon mirror control - Industrial equipment: galvanometer scanner, robot, machine tool, X-Y stage, microscope, semiconductor manufacturing equipment, measuring instruments, servo motor, stepping motor, actuator, encoder
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Company information
Since its establishment in 1975 as a semiconductor manufacturer within the Seiko Group, our company has been creating innovative high-value-added products, primarily focusing on ICs for quartz oscillators and digital products. Our main product, ICs for quartz oscillators, boasts one of the world's leading market shares and is incorporated into various electronic devices, including communications and home appliances, supporting your daily life. In recent years, we have also been focusing on the development of sensor products that detect the movement of objects and the temperature emitted by objects, converting them into electrical signals. Our company has its own factory in Nasushiobara City, Tochigi Prefecture, where we plan, design, and manufacture products in a nature-rich environment adjacent to Nikko National Park. Additionally, we have a sales base at our Tokyo headquarters, enabling us to swiftly incorporate customer requests into product development.