IQS626

IQS626

The IQS626 ProxFusion® IC is a 14-channel self/mutual-capacitive proximity and touch controller with best in class sensitivity, signal to noise ratio and power consumption. In addition the device also includes a Hall-effect channel and an ultra-low power capacitive wake-up channel.

The IQS626 ProxFusion® IC is a 14-channel self/mutual-capacitive proximity and touch controller with best in class sensitivity, signal to noise ratio and power consumption. The device offers either:
  • a 2x3 channel mutual capacitive trackpad and 3 additional generic channel setups or
  • a 3x3 channel mutual capacitive trackpad and 2 additional generic channel setups.
In addition, the device also includes:
  • a Hall-effect channel and
  • an ultra-low power capacitive wake-up channel.
Generic channels can either be setup as self/mutual-capacitive, -inductive, internal temperature or Hall-effect sensor modes. Other features include automatic tuning, independent channel settings and differential offset compensation for sense electrodes.

Features

  • Highly flexible 14-channel ProxFusion®
  • Each generic channel can be configured with three different types of external connections or one of two internal options.
  • 8 external sensor pad connections:
  • Self/Mutual-Capacitive sensors
  • Self/Mutual-Inductive sensors
  • Dedicated reference sensor for environmental / mechanically sensitive designs
  • Internal sensor option:
  • Hall-effect sensor
  • Serial scanning (Single ProxFusion® engine) – up to 8 time-slots
  • Built-in basic functions:
  • Automatic tuning
  • Noise filtering
  • Differential measurements (reference channels)
  • Debounce & hysteresis
  • Dual direction trigger indication
  • Linearization of measurement data
  • Built-in user-interface options:
  • Trackpad (2x3 or 3x3 projected trackpad setups) with:
    • 2-dimensional coordinate output,
    • axial flick/swipe, tap and hold gesture detection.
  • Dedicated ultra-low power channel for power mode handling.
  • Wide Range of Capacitance Detection, Wide Electrode Range of 0 to 200 pF.
  • Internal sensitivity optimization in high capacitive load conditions.
  • Multiple custom signal level event triggers (e.g. proximity, touch, deep touch).
  • Capacitive resolution: down to 0.02fF
  • Automatic reference channel UI’s for temperature and mechanical effects. Assign reference channel to any single or group of channels.
  • Options for reduced RF emissions for integration in RF sensitive environments (wide range of charge transfer frequency options).
  • I2C Interface with IRQ (RDY) line.
  • Event mode (including reduced interrupt options: blocking & hysteresis)
  • Assign a touch flag state of any channel to a dedicated GPIO (default: active low, open-drain).
  • Dedicated address selection pin.
  • Special pre-programmed options:
  • Standalone operation on power-up (low-power single button touch).
  • Active high output (push-pull)
  • Timed long-press output (pulse after 5 second touch).
  • Supply voltage: 1.8V (-2%) to 3.6V
  • Package options: QFN16 (3 x 3 x 0.8mm), WLCSP-16 (1.65 x 1.65 x 0.5mm)

Applications

  • Use in mobile devices and wearables for small integrated touch screen/area navigational control
  • Wear detection and combination sensor uses
  • Touch area coordinate & multi-button designs
  • Low power wake-up buttons / proximity
  • HALL dock detection
  • GUI trigger and GUI control proximity detection
  • Electronic keypads or pin pads
Let us help you implement your IQS626.
We’ve done it before.
Feel free to order us around.