Domestic Alternative Encoder:Comparison Between KTM5800 and iC-TW29

In the fields of servo control, industrial robots and high-precision encoders, imported dedicated interpolation chips have long dominated the market.

As an industry-classic solution, Germany iC-Haus iC-TW29 has been widely applied in multi-pole motor and high-precision interpolation scenarios for many years by virtue of its stable performance.

With the growing demand for supply chain security and performance upgrading, KTM5800 has become an ideal alternative to imported solutions with superior key specifications.

IC-TW29: Industry Classic Sine and Cosine Interpolation Chip.

The iC-TW29 is a universal sine/cosine signal interpolation chip launched by Germany iC-Haus, serving as a benchmark solution for multi-pole servo and direct-drive motor applications.

Maximum single-turn resolution up to 26bit.

Supports up to 4096 input cycles per revolution.

Built-in automatic calibration for sensor offset, amplitude and phase, as well as eccentricity compensation.

Compatible with industrial interfaces such as BiSS-C, ABZ and UVW; maximum AB output frequency up to 12.5MHz.

Fixed latency: 2.4μs / 5.0μs.

Thanks to its mature and reliable performance, iC-TW29 is extensively used in encoders, servo motor commutation and other scenarios, remaining a mainstream choice over the long term.

Practical Pain Points of iC-TW29.

As an imported high-end chip, iC-TW29 shows obvious shortcomings under the current market environment:.

High price, long lead time and unstable domestic stock supply, affecting mass production scheduling.

Its 26bit resolution and microsecond-level latency can hardly meet the new demands of ultra-precision and high-speed servo systems.

Slow response for overseas technical support and insufficient localized services.

Before the maturity of domestic solutions, users lacked better alternatives for a long time.

KTM5800 is a 30bit high-precision interpolation chip designed for high-end servo and encoder applications.

It is fully functionally compatible with iC-TW29 and outperforms it in core indicators:.

Single-turn resolution upgraded to 30bit for higher positioning accuracy.

Supports 1～4096 pole pairs, compatible with full-series multi-pole motors.

One-click linear / nonlinear self-calibration for better mass production consistency.

Ultra-low latency down to 0.5μs for superior high-speed closed-loop response.

Rich interfaces including ABZ, UVW, SPI and PWM, compatible with mainstream drive systems.

Meanwhile, relying on the domestic supply chain, KTM5800 features stable supply, shorter lead time and better cost performance.

Supported by localized technical services, it enables rapid replacement implementation and new product development.

Other Imported Dedicated Solutions: Binding Design Limits Flexibility.

Some high-end systems adopt dedicated ASICs from brands such as Heidenhain and Renishaw, which are deeply bound to the encoder body.

They cannot be purchased and replaced separately, resulting in high upgrade and maintenance costs as well as poor flexibility.

As a universal interpolation chip, KTM5800 supports external signal sources such as magnetic encoders, optical encoders and gratings.

With strong versatility, it avoids supplier lock-in and adapts to legacy equipment upgrading and new platform development.

Imported interpolation chips represented by iC-TW29 once set the industry standard, yet they can no longer satisfy the demands of new-generation equipment in terms of cost, lead time, performance and service.

With higher precision, lower latency, more stable supply chain and better cost advantages, KTM5800 realizes reliable substitution for imported solutions.

It helps the industrial control industry achieve supply chain security and product upgrading, and becomes a mainstream choice for high-precision servo systems, robots and encoders.