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Recommend me a architecture for low power oscillator design

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nijMcnij

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Hello all,

can you please recommend a suitable architecture for an ultra low power, low frequency (50Khz), and modest phase noise requirement.

many thanks
 

iamxo

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Re: oscillator design

since the osc frequency is not high, maybe Gm-C structure is a choice.
 

oermens

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oscillator design

ring osc such as inverter chain or delay cell
 

Fawad Elahi

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oscillator design

there are different oscillator which you can use for ur purpose.
if it is for non sensitive purpose, you can use any LC oscillator.e g: Colpit osc, or Hertley osci
but you can also use a ring osci
 

yibinhsieh

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Re: oscillator design

Due to the low frequency, if you use LC type the area is very large.

If you use ring oscillator, you may need many stages.

I suggest you can use relax RC type oscillator.

The area can be smaller than other ones.

Yibin.
 

Sadegh.j

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Re: oscillator design

I am sure you can get such circuits in the market.

The frequency is very very low, have you thought of using an A-Stable?
 

nijMcnij

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Re: oscillator design

thank you all for your input,

indeed i have considered A-stable and ring oscillators, but they produce digital signals, i need a sin wave.

any comments?
 

iamxo

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Re: oscillator design

nijMcnij said:
thank you all for your input,

indeed i have considered A-stable and ring oscillators, but they produce digital signals, i need a sin wave.

any comments?
Gm-C osc circuit genetates the sine wave, you can try it.
 

nijMcnij

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Re: oscillator design

thank you iamxo for your comment.

can you recommend a good reference for an ultra low power, low frequency gm-c oscillator?
 

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