CK Design Technology Inc.

RC to DC Converter

0 to 5 Volt Output
12 Bit DAC


  • Aerospace
  • U.A.Vs. / R.P.Vs.
  • Robotics
  • Animatronics
  • R/C and Digital Conversions


  • Plugs directly into Fatuba™ type radio receivers.
  • Wide Power Supply Range
  • Stores last valid pulse
  • Small Size

This precision device converts standard R/C servo style PPC signals to an analog DC output with12 bit resolution. The output is stable with input changes such as: supply voltage, pulse amplitude, frequency and temperature. Programable options include: output scaling within 0 to 5 volts, positive or negative going, valid pulse width cut off points, and a second order filter for different time constants (T/C) output filter rates. All programs are factory set.


Temp Range:-15°C to 70°C
Data Sheet:RC to DC Data Sheet


Supply Voltage:3.25 to 6.25 Volts 5 Volts Normal
Current:10ma. typ.
Ground:Connect to signal ground only
R/C Input:Standard servo type PCM. Positive going.
Pulse width valid range:1.0 to 2.0 ms (1.5ms neutral)(STD)
Pulse frequency range:Valid from 25-125 Hz. (50 Hz. Normal)
Input Logic Gate:74HCT Series
Input Resolution:0.4us


+5 Volt Ref.:5.00 Volts ±.05V @ 10ma. User assignable.
Ground:Connect to signal ground only.
DC Analog Output:Programmable within 0.050 to 4.950 Volts @ 15ma.
Output Device:Op Amp (Op295)
Output Default:Power up with no pulse = lower DC limit. i.e. 1.25VDC
Resolution:1.25mv @ 12 bits
Output Drift:±.5% full scale and per 10șC

Program Options:

  • T/C Filter Rate Codes
    • 3 = 1 msec
    • 6 = Standard
    • 9 = 1 sec
  • Output Range
    • A) 0.05 to 4.95 Volts
    • B) 1.25 to 3.75 Volts
    • C) 0.75 to 4.25 Volts
    • User Defined
  • Vaild Pulse Width Range
    • 1.00 to 2.00 msec
    • User Defined