iC-LNG is an optoelectronic encoder IC for absolute linear and angle measuring systems. Photosensors, amplifiers, and comparators, an LED power control and an adjustable signal conditioning unit have been monolithically integrated into the device, as have the necessary interfaces for configuration and data output.
• Absolute position sensors
• Linear and rotary encoders
• Motion control
iC-LNG derives the position data from an analog sine/cosine track and 10 or 11 Gray-coded digital tracks. Using the integrated 6-bit flash interpolator absolute position data of up to 16 bits can be generated in real time. Output is through an SPI interface, a fast shift register, or a 14-bit parallel interface.
iC-LNG also has incremental encoder quadrature signals with an index and conditioned sine/cosine signals from the analog track at its disposal. The number of pulses for the quadrature signals can be varied.
The integrated LED power control with a driver stage allows the transmitting LED to be directly connected and keeps the optical receive power constant with changes in temperature and throughout the device lifetime.
The chip is configured through the 3.3 V and 5 V-compatible SPI interface by an external microcontroller. Various error messages are provided for the monitoring of functions (illumination error, undervoltage error, and configuration error).
Symmetry Electronics is an authorized iC-Haus distributor.