Accusilicon Crystal Oscillator AS318-B 45.158400, 49.152000MHz
DIP14 package
This extremely low phase noise crystal oscillator (<90dBc @ 10Hz) is intended for professional recording equipment as well as audiophile electronics precision devices.
The AS318 provides very low jitter - measured 0.2ps on the 10Hz-1MHz band and 0.071ps on the 12-80MHz band.
Valued for their low power consumption (<25mA @ 15pF) the Accusilicon clocks also have a high resistance to thermal stresses (operational from -20 to 85 ° C).
This component integration is nice and easy. It is powered by 3.3V (within +/- 0.3V) and give excellent results with a 0.1uF capacitor filtered power supply.
The Oscillator will sell probably for $40 each, with free shipping International, paypal only.
Many Chinese brands of digital electronic devices use AS318, so AS318 is mainly sold in China.
If you are interested, please leave a message here, and then look at what prices can be obtained from the dealer.
Because the previous delivery speed was too slow, now I switch to FedEx. The shipping time in Europe and the United States is about 6-9 days, and the shipping cost is increased to 20 US dollars, so buy a pair of clocks with shipping costs is 60 US dollars.
Accusilicon Crystal Oscillator AS318-B Datasheet
View attachment AS318BM.pdf
DIP14 package
This extremely low phase noise crystal oscillator (<90dBc @ 10Hz) is intended for professional recording equipment as well as audiophile electronics precision devices.
The AS318 provides very low jitter - measured 0.2ps on the 10Hz-1MHz band and 0.071ps on the 12-80MHz band.
Valued for their low power consumption (<25mA @ 15pF) the Accusilicon clocks also have a high resistance to thermal stresses (operational from -20 to 85 ° C).
This component integration is nice and easy. It is powered by 3.3V (within +/- 0.3V) and give excellent results with a 0.1uF capacitor filtered power supply.
The Oscillator will sell probably for $40 each, with free shipping International, paypal only.
Many Chinese brands of digital electronic devices use AS318, so AS318 is mainly sold in China.
If you are interested, please leave a message here, and then look at what prices can be obtained from the dealer.
Because the previous delivery speed was too slow, now I switch to FedEx. The shipping time in Europe and the United States is about 6-9 days, and the shipping cost is increased to 20 US dollars, so buy a pair of clocks with shipping costs is 60 US dollars.
Accusilicon Crystal Oscillator AS318-B Datasheet
View attachment AS318BM.pdf
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Do you really think it's a "extremely low phase noise crystal oscillator"?
It's not.
The Well Tempered Master Clock - Building a low phase noise/jitter crystal oscillator
It's not.
The Well Tempered Master Clock - Building a low phase noise/jitter crystal oscillator
The last inventory of 90 and 98MHz was sold out. They are currently being restocked. 90 and 98MHz are available 2 months later.
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The Well Tempered Master Clock Compared with AS318-B, AS318-B has the advantages of small size and convenient use.
Compared with AS509, AS318-B is in great demand. Each batch must be up to 10,000 pieces, of course, only AS318-B is used for retail.
You remind me that AS318B must be more competitive, so the price of 45 and 49MHz is directly cut in half now, only 20 US dollars, including international postage fee.
I have never talk about price, since you claimed that the Accusilon is a "extremely low phase noise crystal oscillator" I did remind you to the plots and the measurements of some real low phase noise oscillators, so you can see that the Accusilon is a "extremely HIGH phase noise crystal oscillator".
That said, there are no doubts that the Accusilon is cheaper and small sized against the TWTMC.
It's a different approach: you are here to sell third party oscillators regardless of quality, it's simply a business, while we are here to design and built the SOTA oscillators regardless of budget and size, and finally to share the projects with the audio community.
I have always doubt where Accusilicon com from.
Many Chinese HiFi product promote says it's US company, and very low phase noise.
However, what the DIYers could get is their own datasheet, it seems that there's no 3rd
party measurement to confirm if Accusilicon performs as it claimed.
The website of Accusilicon is written in Chinese without any English, and says Accusilicon is a company that provides R&D for a Chinese company in Xi-An, the address they left on the website is:
2901 Tasman Dr., Suite 107, Santa Clara
I don't think it's a true headquarter of a eletronics-related company.
联系我们 - Accusilicon
Many Chinese HiFi product promote says it's US company, and very low phase noise.
However, what the DIYers could get is their own datasheet, it seems that there's no 3rd
party measurement to confirm if Accusilicon performs as it claimed.
The website of Accusilicon is written in Chinese without any English, and says Accusilicon is a company that provides R&D for a Chinese company in Xi-An, the address they left on the website is:
2901 Tasman Dr., Suite 107, Santa Clara
I don't think it's a true headquarter of a eletronics-related company.
联系我们 - Accusilicon
@androa76,
100MHz will not be in stock, because 99MHz is now used instead. 99MHz is currently out of stock.
100MHz will not be in stock, because 99MHz is now used instead. 99MHz is currently out of stock.
Accusilicon AS318B is made in China, but this does not affect its performance better than Crystek CCHD-95x, and the price can be cheaper. This has been confirmed by many people at the DIYAUDIO forum. At the same time, a large number of Chinese DACs have also abandoned CCHD-95x and switched to AS318B.
You don’t trust the data published by Accusilicon, but you should be able to trust Ian, who makes many excellent modules. He once recommended AS318 in the forum.
https://www.diyaudio.com/forums/dig...mate-weapon-fight-jitter-503.html#post5881301
Supersurfer once compared crystek cchd 957, accusilicon as318-b and Andrea Mori, he found that accusilicon as318-b was second best.
The Well Tempered Master Clock - Building a low phase noise/jitter crystal oscillator
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accusilicon AS318B now sells for only $20 including international shipping, it also has the advantages of small size and convenient use. Even if it is actually not as effective as Andrea Mori, what about? The point is to pay for every penny. Andrea Mori is also far inferior to NDK DuCULoN, so we should not buy Andrea Mori at all? Every product has its customer base and positioning, and it is necessary to attack each other?
Firstly, if you claim the AS318B is a "extremely low phase noise crystal oscillator" your statement is absolute, there are no relation with price and size.
Then, even if the measured data from Accusilicon are true, with a phase noise of -100dBc at 10 Hz from the carrier, your absolute statement has to be that the AS318B is an "extremely HIGH phase noise crystal oscillator".
Last but not least, It seems you have difficult to read phase noise plots.
The TWTMC-DRIXO, by real measurement, is the best oscillator ever for digital audio: -157.4 dBc at 10 Hz and -130 dBc at 1 Hz from the carrier, see the plot.
The DuCuLoN, by the plot from the manufacturer, is -120 dBC at 10 Hz and -85 dBc at 1 Hz from the carrier.
So, since 157.4 - 120 = 37.4, the TWTMC-DRIXO is 37.4 dBc better than the DuCuLoN.
Even if you add the theoretical 6dB for each division down to 5 MHz to the plot of the DuCoLoN (18 db total), you get -138 dBc at 10 Hz and -103 dBc at 1 Hz from the carrier, that means the TWTMC-DRIXO is anyway 19dBc at 10 Hz and 27dBc at 1 Hz better then the NDK OCXO.
Finally, by phase noise comparison, the TWTMC-DRIXO is not "far inferior" as you claim, indeed TWTMC-DRIXO is "far superior" to NDK DuCULoN and costs a fraction.
Then, even if the measured data from Accusilicon are true, with a phase noise of -100dBc at 10 Hz from the carrier, your absolute statement has to be that the AS318B is an "extremely HIGH phase noise crystal oscillator".
Last but not least, It seems you have difficult to read phase noise plots.
The TWTMC-DRIXO, by real measurement, is the best oscillator ever for digital audio: -157.4 dBc at 10 Hz and -130 dBc at 1 Hz from the carrier, see the plot.
The DuCuLoN, by the plot from the manufacturer, is -120 dBC at 10 Hz and -85 dBc at 1 Hz from the carrier.
So, since 157.4 - 120 = 37.4, the TWTMC-DRIXO is 37.4 dBc better than the DuCuLoN.
Even if you add the theoretical 6dB for each division down to 5 MHz to the plot of the DuCoLoN (18 db total), you get -138 dBc at 10 Hz and -103 dBc at 1 Hz from the carrier, that means the TWTMC-DRIXO is anyway 19dBc at 10 Hz and 27dBc at 1 Hz better then the NDK OCXO.
Finally, by phase noise comparison, the TWTMC-DRIXO is not "far inferior" as you claim, indeed TWTMC-DRIXO is "far superior" to NDK DuCULoN and costs a fraction.
Attachments
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Andrea.. A question.. Given that your result (-130dB at 1Hz) is at the extreme good level.. May I ask you about repeatability, that is did you test more crystals with these results?
Ciao, George
Ciao, George
Yes, we have tested 5 crystals and the differences are minimal, not more 1-2 dB.
Regardless of the circuits, that have their importance, the crystal makes the difference, that's the reason why it's very expensive. Only the crystal costs 3 times a Crystek oscillator.
That said one can understand why a Crystek or a Accusilicon oscilator cannot be "very low phase noise".
Regardless of the circuits, that have their importance, the crystal makes the difference, that's the reason why it's very expensive. Only the crystal costs 3 times a Crystek oscillator.
That said one can understand why a Crystek or a Accusilicon oscilator cannot be "very low phase noise".
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Due to the impact of COVID-19, international flights have been drastically reduced and postage costs have increased significantly. The price can no longer include postage, but must add postage. International postage is charged at $10, and the excess will be absorbed by itself.
If you are buying a pair of clocks (45/49MHz), the total cost is USD 50, including international postage and Paypal fees. When the buyer completes the payment, I will ship it within four days and provide the SF Express tracking code.
Many people often ask the same question repeatedly, so I will explain it again.
Many people often ask the same question repeatedly, so I will explain it again.
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