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SparkFun - Capacitive Touch Sensor IC (Sale)


Availability: Out of stock

SKU:

S-COM-07902

Quick overview

Description: Capacitance is an amazingly accurate way to measure everything from physical contact to length or pressure. While capacitance sensors typically require a fair amount of circuitry, we now have one in a single IC with an I2C digital interface. Make tactile switches obsolete!

Features:

Description: Capacitance is an amazingly accurate way to measure everything from physical contact to length or pressure. While capacitance sensors typically require a fair amount of circuitry, we now have one in a single IC with an I2C digital interface. Make tactile switches obsolete!

Features:

  • Accuracy: 4 fF (yes femto)
  • Linearity: 0.01%
  • Common-mode (not changing) capacitance up to 17 pF
  • Full-scale (changing) capacitance range: ±4 pF
  • Tolerant of parasitic capacitance to ground up to 60 pF
  • Update rate: 10 Hz to 90 Hz
  • Simultaneous 50 Hz and 60 Hz rejection at 16 Hz
  • Temperature sensor on-chip
    Resolution: 0.1°C, accuracy: ±2°C
  • Voltage input channel
  • Internal clock oscillator
  • 2-wire serial interface (I2C®-compatible)
  • Power
    2.7 V to 5.25 V single-supply operation
    0.7 mA current consumption
  • Operating temperature: –40°C to +125°C
  • 16-lead TSSOP package

Documents: AD7746 Datasheet

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