QT1103

      The QT1103 is designed as QTouch 10-key sensor IC for low cost appliance, mobile, and consumer electronics applications.The QTouch technology is a type of patented charge-transfer sensing method well known for its robust, stable, EMC-resistant characteristics. QT1103 is the only all-digital capacitive sensing technology in the market today. This technology has over a decade of applications experience spanning thousands of designs.
      Some absolute maximum specifications of QT1103 have been concluded into several points as follow.The first one is about its operating temperature which would be from -40 to +85°C.The second one is about its storage temperature which would be from -50 to +125°C.The third one is about its Vdd which would be from -0.3 to +6.0V.The fourth one is about its max continuous pin current, any control or drive pin which would be ±20mA.The fifth one is about its short circuit duration to ground or Vdd, any pin which would be infinite.The sixth one is about its voltage forced onto any pin which would be from -0.3V to (Vdd + 0.3) Volts.For the recommended operating conditions The first one is about its operating temperature which would be from -40 to +85°C.The second one is about its Vdd which would be from +2.8 to +5.0V.The third one is about its short-term supply ripple+noise which would be ±5mV/s.The fourth one is about its long-term supply stability which would be ±100mV.The fifth one is about its Cs range which would be <=100nF.The last one is about its  Cx range which would be from 0 to 50pF.
      And also for the AC specifications,QT1103's recalibration time would be 150 ms.And its burst center frequency would be 132 kHz.Its burst modulation, percent which would be 15 % with condition of total deviation.Its sample pulse duration would be 2 s with condition of pulses appear 33 percent longer when viewed on an oscilloscope.Its startup time from cold start would be 260 ms.And so on.For more information please contact us.