iC-TW29 QFN32-5x5

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26-Bit Encoder Processor with Interpolation and BiSS Interface

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Article description

Product description

iC-TW29 is a complete solution for arbitrary resolution ST and MT encoders.
Independent I/O modules provide BiSS C, ABZ, or UVW outputs separately or in combination.
1 to 4,096 input cycles/rev are converted into a freely scalable output angle of up to 26 bit.
Automatic signal error correction ensures a minimum angular error and jitter.
Off-center optical discs or magnetic polewheels can be compensated for eccentricity.
Connecting a revolution counter is possible, to output multiturn absolute data on BiSS.

Features

Any output resolution with any input resolution
Independently-programmed ABZ, UVW, and BiSS resolutions
Absolute data interface for external revolution counters
BiSS C-Mode interface (Encoder Profiles 3, 3S, and 4)
26-bit single-turn position and 32-bit revolution count via SPI
Four capture registers for coded reference marks and touch-probe applications
Eccentricity compensation
Input frequency up to 700 kHz
AB output frequency of up to 12.5 MHz
Differential RS422 line driver outputs for ABZ or UVW
Simultaneous single-ended outputs for ABZ, UVW, BiSS
Automatic compensation of amplitude, offset, and phase errors
Digital filtering for ultra-low output jitter
Encoder Link interface for in-field re-configuration
Internal EEPROM and oscillator
LED intensity control by PWM output
Low latency (2.4 µs or 5.0 μs)
Pin-compatible with iC-TW28

Applications

Rotary and linear incremental or absolute encoders
Magnetic or optical sin/cos sensor interface
Brushless motor commutation (2...64 poles)
Imbedded motion control