VCO in kHz range

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JWBates

Joined Jan 27, 2016
2
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
 

dl324

Joined Mar 30, 2015
10,911
Welcome to AAC!

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

hp1729

Joined Nov 23, 2015
2,304
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
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.
 

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