The KTH7111 is a high-speed, high-precision magnetic encoder equipped with an advanced automatic nonlinearity calibration (ANLC) engine. Users can initiate the calibration either by register configuration or via external pin trigger. The internal controller automatically measures nonlinear errors and calculates the compensation parameters. The calibration results are stored in internal MTP (Multi-Time Programmable) memory. This calibration mechanism requires no external computation and can significantly enhance the linearity of angle measurement, achieving absolute
accuracy better than ±0.2◦.
Capable of handling rotational speeds ranging from 0 to 120,000 rpm, the KTH7111 ensures rapid and precise angle output, making it a robust choice for applications requiring accurate angle measurement and speed control.
The KTH7111 provides multiple flexible angle output modes to meet diverse application needs. First, it supports a programmable ABZ quadrature pulse output with up to 16384 steps per revolution, delivering high-resolution position data. Additionally, the 4-wire SPI interface facilitates efficient angle reading and device communication. The KTH7111 also supports a 2-wire SSI output, simplifying system design and integration. In addition there is an PWM output for angle indication or calibration status and an UVW commutation signal for 1 to 32 pole-pair BLDC applications.
In summary, the KTH7111 is engineered to provide versatility, accuracy, and adaptability, making it a reliable solution for a wide range of angle measurement and control applications.
| Part number | KTH7101 | KTH7111 | KTH7112 | KTH7801 |
| Absolute Resolution | 16 bit | 16 bit | 16 bit | 16 bit |
| On-axis topology | x | – | x | x |
| Off-axis topology | x | x | – | x |
| Multi-pole topology | x | x | x | x |
| ANCL automatic non-linear calibration | on- & off-axis | off-axis | on-axis | – |
| INL error (after calibration) | ±0,1◦ (on-axis) ±0,2◦ (off-axis) |
±0,2◦ | ±0,1◦ | ±0,35◦ |
| Magnetic field strength diagnosis / alarm | – | – | – | x |
| Magnetic stray field compensation | x | – | – | – |
| Latency (data update) | 1 μs | 1 μs | 1 μs | 1 μs |
| SPI (communication + angle) | 10 Mbps | 10 Mbps | 10 Mbps | x |
| CRC available | – | – | – | x |
| SSI (angle) | – | 5 Mbps | 5 Mbps | x |
| ABZ incremental resolution | 4 … 16384 | 4 … 16384 | 4 … 16384 | 4 …4096 |
| PWM (angle) | – | 12 bit | 12 bit | 14 bit |
| PWM (calibatrion status) | – | x | x | – |
| UVW commutation signal | – | 1 .. 32 poles | 1 .. 32 poles | – |
| MTP multi-time programmable memory | x | x | x | x |
| Operating voltage | 3,3 … 5 V | 3,3 … 5 V | 3,3 … 5 V | 3,3 … 5 V |
| Operating temperature | −40◦C to 125◦C | −40◦C to 125◦C | −40◦C to 125◦C | −40◦C to 125◦C |
| AEC-Q100 automotive qualified | x | – | – | x |
| Package | SOP-8 5×6 | QFN16 3×3 | QFN16 3×3 | QFN16 3×3 SOP-8 5×6 |
Hall Magnetic Encoder IC, 16-bit, on-axis, ABZ/UVW/PWM/SPI/SSI, ANLC auto non-linear calibration
Hall Magnetic Encoder IC, 16-bit, on- & off-axis, ABZ/PWM/SPI/SSI
TMR Magnetic Encoder IC, 24bit, on- & off-axis, ABZ/UVW/PWM/SPI, ANLC auto non-linear calibration
