IC-TACH-02 : Dual Tachometer / Frequency Counter / Event Counter IC

Image of the USB-TACH-02 USB Tachometer / Frequency Counter / Counter

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The IC-TACH-02 is a two channel, mixed mode (analog / digital), data collection peripheral. This processor acts as an intelligent peripheral measuring the speed, frequency and/or event count of two channels simultaneously. The IC-TACH-02 peripheral is intended to allow a host processor to collect real time information without the typical overhead. Communication to the module is accomplished with a parallel interface compatible with the FTDI245RL USB IC. This processor may be used directly with the FTDI245RL chip to provide a USB interface to a host PC, or may be used with a direct connection to many microcontrollers. 


Robotics, industrial automation, machine vision, hobbyist electronics bench, systems monitoring, and many more...


  • Analog Input Channel
    • Buffered inputs allow for measurement of low level signals without the need for additional circuitry
    • User selectable gain from 1x to 48x
    • User selectable threshold from 1.65V to 2.89V
    • 7 Channel input multiplexer
    • 0 to 100KHz input frequency
    • Conditioned analog signal available as a digital output
  • Digital Channel
    • 0 to 4 MHz input frequency
    • 1.65V input threshold
  • Both Channels
    • 24 bit internal counters allow for long run event counting without overflow
    • Continuous sampling in parallel with counting, zero missed counts
    • Tachometer function allows for rotation measurement to 6 RPM, slower rotations available with customized modules
  • Module Hardware
    • Available in standard SOIC-28 plastic package
    • Lead-free / ROHS compliant
    • Extremely rugged, crystal free design and high accuracy, crystal based versions
    • Simple direct connection to the FTDI USB IC
      • Royalty free drivers for Windows CE, 98, 2000, ME, XP, Vista, Windows 7, Mac OS-8, Mac OS-9, Mac OS-X, Linux 2.40 and greater, Android (Beta)
      • Virtual COM port or high speed direct communication options through FTDI driver
      • User customizable VID / PID, VID & PID numbers available through FTDI at no charge
      • Large support and development community
    • Simple connection to many microprocessors using a parallel interface
  • Software
    • Communicates with a simple binary serial protocol
    • Development module and Demo application available as part number USB-TACH-02
    • Sample C++ driver class source code available for maximum flexibility across platforms, operating systems, and development tools.

Demo Application and Development Module Available as USB-TACH-02:

USB-TACH-02 Demo Application Screenshot Image of USB-TACH-02 module