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Active Stylus Driver Chip

Goodix provides industry-leading, highly integrated active stylus driver chips, and continues to lead the market for stylus applications in smartphones, tablets, notebooks, educational tablets and other smart devices.


The next-generation GP870 series active stylus driver chips support various mainstream active stylus protocols. Featuring 60V high-voltage, low-power driving technology, these chips deliver higher-quality detection signals to TP sensor and TP IC, enhancing pen stroke responsiveness and stability. This delivers users with more precise, smooth, responsive, and durable writing experiences. The GP870 series can work with Goodix Bluetooth LE SoCs to enable innovative stylus features, including pen loss detection and locating, wireless voice passthrough, and AI assistant shortcut features.

GP870 Series Advantages

Multi-Protocol Compatibility: Supports active stylus protocols including USI 3.0, USI 2.x, MPP 2.x, HPP, LPP, MiPP, and OPP

Adjustable High-Voltage Drive: Supports 15 ~ 60V drive output to accommodate different display-side sensing requirements

Low Power Consumption: Max drive voltage is increased by 50% while power consumption is reduced by 50% compared to the previous series

Enhanced Anti-Interference Decoding: Employs enhanced DSSS decoding Rx to improve stability and noise immunity in complex environments

Extended Functionality: Supports 3 Tx channels and includes Tilt and Tail eraser functions, enhancing drawing and editing experience

Integrated Power Management: Built-in buck LDO supports direct lithium battery voltage supply, simplifying system power supply design

Certification and Compatibility: Certified by USI Organization, Google AVL, and Microsoft WHLK

Product Video

Recommended Products

Part Number Channels Interface Support Protocols Tx Voltage Supply Voltage
GP870H 3Tx * 1Rx SPI USI 3.0, USI2.x, MPP2.x, HPPLPP, MiPP, OPP, etc. 15~60 V 2.1~4.6 V
GP870M 3Tx * 1Rx SPI USI 3.0, USI2.x, MPP2.x, HPPLPP, MiPP, OPP, etc. 15~40 V 2.1~4.6 V

Why Goodix

Outstanding Performance

  • Support mainstream multiple active stylus protocols

  • Adjustable high-voltage drive

  • Enhanced anti-interference decoding

  • Low power consumption

Versatile Applications

  • Widely deployed across tablets, laptops, foldable/standard smartphones, e-learning devices, etc.

  • Full support for LCD, OLED, and e-ink displays

Turnkey Solution

  • Proprietary chipset and AI algorithms, provide reference SDK for second development

  • Integrated hardware and software solution for rapid deployment

Quality Assurance

  • Proven large-scale mass production experience

  • Global premium supply chain ensuring reliable delivery

Applications

Learning Devices/Educational Tablets
Goodix provides an integrated hardware and software active stylus solution. With excellent anti-interference performance and AI-powered algorithms, the solution delivers more responsive stroke detection and more precise writing, empowering K-12 educational enlightenment and learning.
Foldable/Standard Smartphones:
Goodix active stylus driver chips feature low-power technology with multi-stage energy recovery, adapting to "compact stylus + small battery" designs. This ensures longer writing endurance for note-taking in meetings and everyday use.

 

Tablet
Powered by 60V high-voltage technology, this stylus offers superior sensitivity and noise immunity, fully compatible with LCD, OLED, and e-ink displays. With intuitive tilt and eraser gestures, it excels in drawing, hover preview, meeting notes, and video editing workflows.
Laptops
Goodix’s active stylus solution supports standard protocol certifications for Windows OS and Chrome OS with superior protocol compatibility and performance assurance.

 

Certification

FAQ

Q
What are the advantages of Goodix active stylus solutions over EMR stylus solutions?
A

Compared with EMR stylus solutions, Goodix active stylus solutions deliver a drawing-grade writing experience while offering better cost efficiency and richer smart interaction capabilities, and are increasingly becoming the preferred choice for smart devices. The comparison is as follows:

 

Type / Dimension Active Capacitive Stylus (with High-Performance Driver IC) EMR Stylus
Writing Experience High precision, low latency High precision, low latency
Compatibility & Cost Compatible with capacitive touchscreens; enables thinner host devices and lower overall system cost Requires a dedicated EMR digitizer, which increases device thickness and overall cost
User Experience Requires charging; supports advanced smart features such as AI assistant wake-up, paper-like friction sound simulation, and haptic feedback for touch buttons Battery-free; does not support smart features
Q
What active stylus protocols does Goodix active stylus solution support?
A

Goodix active stylus solution supports mainstream stylus protocols including USI 3.0, USI 2.x, MPP 2.x, HPP, LPP, MiPP, and OPP, and has obtained certifications from Microsoft, Google AVL, and the USI organization. Goodix solutions have already been widely commercialized in Lenovo and ASUS notebooks, as well as various devices based on USI or MPP protocols.

 

Q
What are the application scenarios for Goodix active stylus chips?
A

Goodix active stylus chipsets support mainstream active stylus protocols and are widely integrated into various smart devices, including smart tablets, laptops, foldable smartphones, standard smartphones, and educational learning devices. Our solutions are compatible with LCD, OLED, and e-ink displays, and are commercially deployed by leading brands such as OPPO, vivo, Xiaomi, Honor, Lenovo, Asus, Zuoyebang, xueersi, Imoo and Yuanfudao.

 

Q
What are the technical advantages of Goodix active stylus solutions?
A

The core strength of the Goodix active stylus solution lies in its system-level development and full-chain integration capability, combining: active stylus driver chip + touch controller + Bluetooth LE SoC + active stylus protocol stack + AI algorithms.


For tablets: Leveraging the combination of a Goodix touch controller IC and active stylus driver chip, the solution supports a pen coordinate reporting rate of 240–560 Hz for lower latency. Industry-leading noise suppression and 40–60 V high-voltage driving capability also help address common user pain points such as poor inking responsiveness and wavy or unstable lines.


For foldable and bar-type smartphones: Goodix offers an industry-leading built-in active stylus solution. With a high-voltage, low-power chip design and an energy recovery architecture, it delivers strong driving performance while significantly reducing power consumption. This ensures precise writing and longer battery life, effectively addressing key customer concerns around storage convenience and battery endurance.

 

Q
How is the anti-interference performance of the GP870?
A

The GP870 series active stylus driver chip features a proprietary enhanced DSSS decoding module, improving stability and interference immunity in complex environments.

 

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