iC-LG
21-BIT OPTICAL POSITION ENCODER WITH
SERIAL/PARALLEL AND SIN/COS OUTPUT
iC-LG is an optoelectronic encoder iC for absolute linear
or angular measuring systems, such as glass scales and shaft
encoders. Photosensors, amplifiers and comparators, the entire
signal conditioning unit and interfaces for the position data out-
put are monolithically integrated on the chip.
Applications
– Optical high-resolution absolute position encoders
– Analog and digital moto feedback systems
– Robotics, tooling machines, servo motors
Features
– Excellent matching and reliability granted by system-on-chip
design with integrated photosensors
– Differential track evaluation and signal-related hysteresis
comparators grant EMI immunity and operation up to 125 °C
– High assembly tolerance due to synchronized scanning prin-
ciple using pre- and post-positioned photosensors
– 13 digital tracks pitched at just 500 µm
– 2 sine/cosine analog tracks with enlarged photosensors and
electronic calibration features
– Position data resolution of 16 to 21 bits by on-chip interpola-
tion (by 3-bit flash or 8-bit S&H ADC)
– Services external multiturn encoders and interpolation ICs
– LED power control with a 50 mA 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
– Interface modes: parallel encoder, serial BiSS/SSI, µC
– 4 to 5.5 V single supply operation, low power consumption
– Options: extended temperature range of -40 to +125 °C, cus-
tomized COB assemblies, reticles and code discs
40-pin BLCC Package LG5C
10.2 mm x 11.9 mm
Scale 3:1
Am Kuemmerling 18 • D-55294 Bodenheim, Germany
Tel. +49 61 35 / 92 92-30 0 • Fax +49 61 35 / 92 92-19 2 • http://www.ichaus.com
ICHAUS [ IC-HAUS GMBH ]
