Encoder iCs

iC-LG - 21-bit Optical Position Encoder

APPLICATIONS
•High-resolution optical absolute position decoding
•Analogue and digital motor feedback systems

FEATURES
•Excellent matching and reliability granted by system-on-chip design with integrated photo sensors
•Differential track evaluation and signal-related hysteresis comparators grant EMI immunity and operation up to 125°C

•High assembly tolerance due to synchronised scanning principle using pre- and post-positioned photo sensors
•13 digital tracks pitched at just 500µm
•2 sine ⁄ cosine analog tracks with enlarged photo sensors and electronic calibration features
•Position data resolution of 16 to 21 bits by on-chip interpolation (by 3-bit flash or 8-bit S&H ADC)
•Services external multiturn encoders and interpolation ICs
•LED power control with a 50mA highside driver
•Adjustable on-chip temperature sensor with a min/max alarm
•Operational monitoring with alarm output for missing code, corrupted single/multiturn data (disc error), EEPROM link error, illumination error (end of life), out-of-range temperature
•Output modes: parallel, serial BiSS ⁄ SSI, µC interface
•4 to 5.5V single supply operation, low power consumption
•Options: extended temperature range of -40 to +125°C, customised COB assemblies, reticles and code discs