# Frequency to Voltage Converter

Discussion in 'The Projects Forum' started by Yoga Purna Tama, Jan 25, 2015.

1. ### Yoga Purna Tama Thread Starter New Member

Jan 25, 2015
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Hello everyone.

im yoga from indonesia. im currently working on my final project. i need device that can convert frequency (up to 360 KHz) to voltage for my project. i tried LM 2907 but apparently it has maximum frequency around 2.5 Khz.

is there another way for me to convert the frequency i need? what IC or Circuit should i use?

thank you very much for any help...

Jan 15, 2015
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Have you looked at the Analog Devices AD650 F/V V/F chip? Also this should likely be in the school work / homework section of the forums.

Ron

3. ### alfacliff Well-Known Member

Dec 13, 2013
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have you looked into integrator circuits?

4. ### ronv AAC Fanatic!

Nov 12, 2008
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I don't know what the minimum and maximum frequency you have is. You might be able to just lower your frequency with a divider to get it to work with your part.

5. ### jjw Member

Dec 24, 2013
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You can use a monostable multivibrator with a pulsewidth 1/fmax triggered with the signal and its output filtered with RC filter.

Jan 25, 2015
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7. ### Yoga Purna Tama Thread Starter New Member

Jan 25, 2015
6
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the minimum frequency is about 30KHz and maximum 360KHz. any tips?

8. ### Rory Starkweather Member

Jan 27, 2015
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This might be more expensive than your whole project, but, have you considered an x30000 frequency divider? It would drop your frequency range to the 1-12 Hz range. Would the rest of your circuit work with that?

Jan 15, 2015
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Yeah, did you look at the data sheet link I posted in post #2?

Ron

10. ### Yoga Purna Tama Thread Starter New Member

Jan 25, 2015
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hello ron. i already read the datasheet but i cant figure out how to use it. i mean the maximum frequency input or the vpp input. because i use function generator for the input. am i getting wrong? thank you for your help