iC-Haus iC-TW28 10-Bit Sin/Cos Interpolator
iC-Haus iC-TW28 10-Bit Sin/Cos Interpolator features automatic signal adaptation and error correction to maintain minimum angular error and jitter. This interpolator accepts 20mV to 2V differential Sin/Cos input signals directly from magnetic or optical sensors, no external signal conditioning is required. The iC-TW28 interpolator provides optional UVW commutation output modes for 1 to 32 polepair motors and SPI angle and multi-cycle readout for embedded applications. This interpolator in SPI mode provides multi-cycle synchronisation and reference mark capture functions to support absolute position systems. Typical applications include rotary and linear encoders, magnetic or optical sin/cos sensor interface, brushless motor commutation (2 to 64 poles), and embedded motion control.
Features
- Differential PGA inputs for sine, cosine, and index
- Up to 700kHz input frequency
- Up to 12.5MHz AB output frequency
- Automatic compensation of amplitude, offset, and phase errors
- Low latency (typical 1.5µs)
- Differential RS422 line driver outputs for ABZ or UVW
- Simultaneous single-ended outputs for ABZ and UVW
- Digital filtering for ultra-low output jitter
- Complete status and fault monitoring capabilities
- Configured by pins or SPI
- In-field re-configuration via Encoder Link interface
- Easy to use with built-in line driver, EEPROM, and oscillator
- Push-button automatic calibration for fast commissioning
- LED intensity control by PWM output
- 10-bit angle data and 14-bit multi-cycle counter available to SPI
- Capture register for coded reference marks and touch-probe applications
- Space-saving 5mm x 5mm QFN package
- Single 3.3V supply
Applications
- Rotary and linear encoders
- Magnetic or optical sin/cos sensor interface
- Brushless motor commutation (2 to 64 poles)
- Embedded motion control
Block Diagram
Associated Board
iC-Haus iC-TW28 EVAL TW28_1D Evaluation Board
Designed for evaluating, testing, and measuring of iC-TW28 10-Bit Sin/Cos interpolator.