Sep 21, 2007 #1 N nijMcnij Full Member level 1 Joined Dec 6, 2005 Messages 97 Helped 5 Reputation 10 Reaction score 4 Trophy points 1,288 Activity points 2,167 Hello all, can you please recommend a suitable architecture for an ultra low power, low frequency (50Khz), and modest phase noise requirement. many thanks
Hello all, can you please recommend a suitable architecture for an ultra low power, low frequency (50Khz), and modest phase noise requirement. many thanks
Sep 21, 2007 #2 I iamxo Full Member level 4 Joined Mar 22, 2006 Messages 225 Helped 16 Reputation 32 Reaction score 4 Trophy points 1,298 Location Southeast Asia Activity points 2,493 Re: oscillator design since the osc frequency is not high, maybe Gm-C structure is a choice.
Sep 21, 2007 #3 O oermens Advanced Member level 2 Joined Nov 19, 2005 Messages 525 Helped 107 Reputation 220 Reaction score 44 Trophy points 1,308 Location canada Activity points 3,988 oscillator design ring osc such as inverter chain or delay cell
Sep 21, 2007 #4 F Fawad Elahi Member level 2 Joined Mar 19, 2007 Messages 50 Helped 4 Reputation 8 Reaction score 2 Trophy points 1,288 Location Pakistan Activity points 1,504 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
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
Sep 22, 2007 #5 Y yibinhsieh Full Member level 4 Joined Apr 25, 2005 Messages 194 Helped 19 Reputation 38 Reaction score 5 Trophy points 1,298 Activity points 2,845 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.
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.
Sep 22, 2007 #6 Sadegh.j Advanced Member level 3 Joined Nov 29, 2006 Messages 749 Helped 48 Reputation 98 Reaction score 15 Trophy points 1,298 Activity points 5,585 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?
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?
Sep 23, 2007 #7 N nijMcnij Full Member level 1 Joined Dec 6, 2005 Messages 97 Helped 5 Reputation 10 Reaction score 4 Trophy points 1,288 Activity points 2,167 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?
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?
Sep 24, 2007 #8 I iamxo Full Member level 4 Joined Mar 22, 2006 Messages 225 Helped 16 Reputation 32 Reaction score 4 Trophy points 1,298 Location Southeast Asia Activity points 2,493 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? Click to expand... Gm-C osc circuit genetates the sine wave, you can try it.
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? Click to expand... Gm-C osc circuit genetates the sine wave, you can try it.
Sep 24, 2007 #9 N nijMcnij Full Member level 1 Joined Dec 6, 2005 Messages 97 Helped 5 Reputation 10 Reaction score 4 Trophy points 1,288 Activity points 2,167 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?
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?