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Home » NEWEST Products » New by Manufacturer » Azoteq » Azoteq IQS259 ProxSense 9-Channel Capacitive Sensor Controller
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Azoteq IQS259 ProxSense®
9-Channel Capacitive Sensor Controller

Azoteq's IQS259 ProxSense® 9-Channel Capacitive Sensor Controller uses advanced analog and digital circuitry to achieve unparalleled proximity and touch performance. The high sensitivity enables the IQS259 ProxSense® 9-Channel Capacitive Sensor Controller to work reliably through glass up to 25mm thick and achieves proximity detection up to 250mm. The Azoteq IQS259 ProxSense® 9-Channel Capacitive Sensor Controller can operate from 1.8 to 3.6V and achieves power consumption as low as 8 microampere while still sensing proximity and touch. The I2C compatible interface allows for full control of the sensor functions from a host controller.

  • 9 Channel input device
  • Proximity & Touch on each channel
  • Distributed Proximity channel formed by multiple keys
  • I2C interface
  • Automatic tuning to optimum sensitivity
  • Supply Voltage 1.8V to 3.6V
  • Multiple Low Power Modes
  • Internal voltage regulator and reference capacitor
  • Large proximity detection range
  • Automatic drift compensation
  • QFN(3x3)-16
  • Consumer electronics - TVs, Blu-Ray players, Set-top boxes
  • White goods and appliances
  • Office equipment, educational toys
  • Proximity detection that enables backlighting activation
  • Wake-up from standby applications
  • Replacement for electromechanical switches
  • GUI trigger and GUI control proximity detection
Reference Design Reference Design
  • Use C2 and C4 for added RF noise immunity
  • Place C1-C4 as close as possible to IC, connected to good GND
  • R7, R8 and R9 used as pull up resistors for I2C protocol (4.7k to 10k typical)
  • RDY Pin and R9 required for Event Mode
  • Refer to Application Note (AZD036) on projected key pad design
  • Azoteq
  • Sensors