iC-Haus iC-TW39 24-Bit Magnetic On-Axis Angle Sensor
iC-Haus iC-TW39 24-Bit Magnetic On-Axis Angle Sensor is a very compact TMR-based system-on-chip solution for 360° absolute angle sensing in the end-of-shaft position. This sensor tracks the magnetic field direction only in the X-Y chip plane, with reasonable placement tolerances of the IC. The iC-TW39 sensor signal is resolved by a high-resolution interpolator, featuring resolution-enhancing digital filtering and automatic signal error correction. This sensor is configured via SPI or the bidirectional BiSS interface, which supports encoder profiles 3 and 3S by simplifying the BiSS master connection. The iC-TW39 sensor ensures minimal angular error, excellent position jitter even at low speeds, and unmatched position noise at standstill. Typical applications include high-resolution angle sensing, brushless motor commutation (2 to 64 poles), incremental or absolute rotary encoders, and servo motor control.
Features
- TMR-based absolute angle sensor over 360°
- High operating distance and axial play tolerance
- Automatic signal error correction
- Rotation speed up to 360,000rpm
- FlexCount® ABZ output from 1 up to 65536 AB cycles
- Adjustable zero position and length
- Up to 12.5MHz AB output frequency
- Outstanding AB jitter performance (e.g. ±2% at 2500cpr)
- UVW output at 1 up to 32cpr, adjustable rotor angle
- Bidirectional open-source BiSS Interface, profile compatible
- High angle resolution (24-bit ST)
- 24-bit revolution counting
- High accuracy (INL ±0.15°) and repeatability (0.04°)
- Ultra-low output lag of 1.5µs
- Configurable status monitoring for alarm output
- 20MHz SPI interface
- Internal EEPROM
- Single 3.3V supply, low power consumption (typical 30mA)
- -40°C to 125°C operating temperature range
Applications
- High-resolution angle sensing
- Brushless motor commutation (2 to 64 poles)
- Servo motor control
- Incremental or absolute rotary encoders
Block Diagram
Dimension Diagram
Associated Board
iC-Haus iC-TW39 EVAL TW39_1M Evaluation Board
Designed for evaluating, testing, and measuring the iC-TW39 sensor.