Description
The iC-TW29 is a system-on-chip for encoder applications. The integration of a 14-bit interpolator with a 26-bit gearbox provides a complete solution for arbitrary resolution single and multiturn encoders. Independent I/O modules with individually programmed resolutions provide BiSS C, ABZ, or UVW outputs separately or in combination.
Automatic calibration of sensor offset, sin/cos amplitude and phase, and zero input offset, gain, and phase provide and maintain minimum angular error and jitter. The gearbox tracks input cycles (up to 4,096 per revolution) and provides output resolutions of up to 26 bits per revolution.
Auto-calibrated eccentricity compensation increases achievable angular accuracy by correcting for off-center optical discs or magnetic polewheels. When combined with an external revolution counter, the iC-TW29 provides a complete BiSS multiturn absolute encoder solution.
Features