IQS391: Focused Control, Minimal Overhead
The IQS391 is a compact, efficient haptic driver for Linear Resonant Actuators (LRAs), supporting both I²C and PWM modes. A streamlined single-byte I²C interface simplifies development and reduces firmware complexity, making it ideal for battery-powered devices where responsiveness and low power matter.
Key Features of the IQS391:
• I²C Mode for direct actuator frequency control
• PWM Mode for external signal-driven behavior
• Low firmware overhead for fast development
• Optimized for power-sensitive designs like wearables and handhelds
IQS397: Integrated Sensing with Smart Haptic Control
The IQS397 combines capacitive or inductive touch sensing with an integrated LRA driver. Built on Azoteq’s ProxFusion® platform, it enables autonomous, event-driven haptic feedback with minimal load on the host MCU. Designed for real-time responsiveness and robust operation, the IQS397 supports flexible configuration and dynamic power management.
Key Features of the IQS397:
• Capacitive or inductive sensing with integrated haptic driver
• I²C and Standalone modes for flexible control
• Selectable drive frequencies with H-bridge protection
• Power mode management for extended battery life
• Reliable operation in noisy environments
Designed for Real-World Integration
Both ICs are supported by evaluation kits, PC-based GUI tools, reference designs, and a motor compatibility list—streamlining implementation and reducing time to market. Combining sensing and haptic output in a single chip lowers BOM cost, simplifies layout, and accelerates product development.
Jean Viljoen, Chief Sales Officer at Azoteq, commented:
“The IQS391 and IQS397 extend Azoteq’s capabilities in haptics and sensing. The IQS397, especially, changes the game by unifying input and tactile output in a single device.”
Packaging and Voltage Options:
• Supply Voltage: 1.71 V to 3.6 V
• Package: QFN20 (3 × 3 × 0.55 mm), 0.4 mm pitch
Developer Resources:
Azoteq supports engineers with a complete development ecosystem:
• Detailed datasheets and design guides
• Reference schematics and firmware examples
• Evaluation kits and PC-based configuration tools
• Technical support for integration and troubleshooting
About Azoteq (Pty) Ltd:
Azoteq (www.azoteq.com) is a leader in sensor fusion and haptic innovation. With a portfolio that integrates capacitive, inductive, IR, Hall-effect, and ambient-light sensing into single ICs, Azoteq’s ProxFusion® technology powers next-generation user interfaces across global markets. The company operates from design centers in South Africa and Asia, supported by an international distribution network.
Jean Viljoen
Azoteq
+ +27218630033
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