Azoteq IQS7211E Versatile Trackpad/Touchscreen Controller

Azoteq IQS7211E Versatile Trackpad/Touchscreen Controller is a capacitive touch and proximity trackpad / touchscreen controller that offers superior sensitivity, signal-to-noise ratio, and automatic tuning of electrodes. The low power proximity detection allows extreme low power operation. The IQS7211E includes a dedicated ultra-low power wake-up touch sensor or wake-up onscreen / trackpad. Other features include automatic sensor tuning for optimum sensitivity, internal voltage regulator and reference capacitor, on-chip noise filtering, detection debounce and hysteresis, and a wide range of capacitance detection. Azoteq IQS7211E Versatile Trackpad/Touchscreen Controller has high-resolution coordinate outputs, fast response with a coordinate report rate up to 100H, and tracking for one- and two-finger use. The device has 13 (QFN20) / 11 (WLCSP18) external sensor pad connections. Ideal applications include fitness bands, true wireless stereo (TWS) earbuds, game controller touchpads, and headphones.

Features

  • Highly flexible ProxFusion® device
  • 13 (QFN20) / 11 (WLCSP18) external sensor pad connections
  • Self- / mutual-capacitive sensors configuration for display wake-up
  • Ultra-low power (ULP) wake-up on touch
    • Dedicated wake-up touch sensor or wake-up onscreen/trackpad
  • Sensor flexibility
    • Automatic sensor tuning for optimum sensitivity
    • Internal voltage regulator
    • Reference capacitor
    • On-chip noise filtering
    • Detection debounce and hysteresis
    • Wide range of capacitance detection
  • Trackpad / touchscreen
    • Up to 2 fingers tracking
    • High-resolution coordinate outputs
    • Fast response: Coordinate report rate up to 100Hz
    • Individual sensor touch
    • Integrated touch size output (area and strength) for touch integrity
    • Single finger gesture recognition engine
    • Electrode mapping for optimal PCB layout
    • Configurable coordinate resolution and orientation
    • Compatible with wide range of overlay materials and thicknesses
    • Compatible with multiple 1-and 2-layer sensor patterns
    • Adjustable sensing frequency offset for limiting potential display interference
    • No calibration required - systems automatically compensated for mechanical and temperature changes
    • Water immunity features
  • Supply voltage
    • 1.8V (-5%) to 3.5V at 14MHz
    • 2.2V minimum at 18MHz
  • Design and manufacturing support
    • Touch pattern layout drawing
    • Full FPC layout package
    • Test guide for touch pattern
    • RFI immunity design support
  • Design simplicity
    • PC Software for debugging and obtaining optimal performance
    • One-time settings programming (during MP) or pre-programmed devices
    • Auto-run from programmed settings for simplified integration
    • No production line calibration required
  • Display cover lens thickness
    • 0.5mm minimum thickness
    • 2mm to 4mm maximum thickness, depending on design parameters
  • Minimized display noise
    • Advanced DSP for touch performance
    • Display and charger interference avoidance
    • Auto-adjusting digital filters
  • Supports different display touch panel types
    • On-cell
    • Add-on touch panel
  • Supporting up to 2.5" panels
  • Screen resolution
    • 256 per channel, example: 2048x768 (9x4 channels), 1536x1280 (7x6 channels)
  • Automated system power modes for optimal response vs consumption
  • I2C communication interface with IRQ/RDY (up to fast plus - 1MHz)
  • Event and streaming modes
  • Customizable user interface due to programmable memory

Applications

  • Fitness bands
  • TWS earbuds
  • Game controller touchpads
  • Headphones

Block Diagram

Azoteq IQS7211E Versatile Trackpad/Touchscreen Controller
Published: 2022-05-19 | Updated: 2022-05-26