VCO in kHz range

Discussion in 'General Electronics Chat' started by JWBates, Feb 3, 2016.

  1. JWBates

    Thread Starter New Member

    Jan 27, 2016
    2
    0
    Hi all,
    I am trying to find / buy a voltage controlled oscillator in the kHz range. Ideally I need it to be between 40 kHz - 70 kHz output as a sine wave.
    I have spent hours trawling online but everything seems to be MHz GHz.
    Can anyone point me in the direction of a supplier who sells this kind of chip.
    Thanks
     
  2. dl324

    Distinguished Member

    Mar 30, 2015
    3,242
    619
    Welcome to AAC!

    Many opamp application notes will have a VCO (square wave) example. Adding two integrators will give you a sine wave.
     
  3. hp1729

    Well-Known Member

    Nov 23, 2015
    1,950
    219
    ICL8038. Creates a sine wave up to about 300 KHz. The pot adjustment can be changed to a voltage input I suppose. Exar makes a similar device. XR2206 I think it was.
     
  4. JWBates

    Thread Starter New Member

    Jan 27, 2016
    2
    0
    Thanks, hp1729 that's a big help.
     
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