The SMD-04B is a high precision optical encoder IC that employs a diffraction image reflection method.
It implements an OEIC (Opto-Electric Integrated Circuit) and LED in a single package. Light emitted from the LED is projected onto a scale, and the reflected diffraction image detected by a photodiode detector is used to determine the relative movement between the SMD-04B and the scale. A Z-phase origin signal can also be output by establishing a pattern for origin detection on the scale. It also features a photodiode detector array to reduce degradation in phase characteristics due to variations in mounting accuracy.
Products
SMD-04B
[Reflective incremental Optical Encoder]
Based on high-precision Encoder IC SMD-01B, Index signal (Z phase) is added and expand the operation temperature.
Features
・Package ：HCOB14 5.3×4.3×1.0mm
・Power supply ：4.5～5.25V
・Power consumption ：22mA
・Operation temperature ：-30～+85℃
・2 phase(Sin wave, A/B) analog output(20um/cycle)
Noise-resistant differential output
・APC Function :LED brightness auto power
control function to reduce
variation in analog output
signal amplitude
Block Diagram
Application example
・OA equipment： MFP, Polygon mirror control
・Industrial： Galvano Scanner, Robotics, Machine tool, X-Y stage, Microscope, Semiconductor manufacturing equipment, Measuring equipment, Servo Motor, Stepping motor, Actuator, Encoder