16 MHz crystal characteristics | Dialog Semiconductor customer support - 雷电竞下载app,雷电竞官网登录,雷竞技安卓下载

9 posts / 0 new

Last post

Sun, 2018-06-10 16:13

sr9213

Offline

Last seen:1 month 3 weeks ago

加入:2017-09-26 11:30

16 MHz crystal characteristics

Dear Dialog,

The 16MHz crystal referenced by Dialog is 7M-16.000MEEQ-T. This seems to be out of stock. So can you please suggest an alternate part number.
In AN-B-054 DA14585_Application Hardware Reference Guidelines, it is only mentioned that the crystal should have max. ESR less than 100 ohms. But what about the other characteristics like load capacitance, tolerance, frequency stability? Will a two-pad crystal will make any difference?

Best Regards,
sr9213

Keywords:

DA14585

16MHz

crystal characteristics

Device:

DA14585

Mon, 2018-06-11 17:26

PM_Dialog

Offline

Last seen:2 hours 36 min ago

加入:2018-02-08 11:03

Hi sr9213,

You are able to use every xtal which has the same characteristics as the 7M-16.000MEEQ-T that is referenced by Dialog. You will find attached an excel sheet with some examples of xtal that you can use. Be aware that these are just some examples, so you can use every other xtal that is according to the characteristics of AN-B-054 document. Please let us know if you find a better suited (cheaper) xtal.

Thanks, PM_Dialog

附件:

16MHz.zip

Tue, 2018-06-12 07:45

(Reply to #2) #3

sr9213

Offline

Last seen:1 month 3 weeks ago

加入:2017-09-26 11:30

Dear Dialog,

Thanks for the suggestions. Below are 2 queries I have
1) This is just for my understanding purpose. Apart from characteristics, will the number of physical contacts of crystal make a difference. The referred part is having a 4 contact, if I choose a xtal with same characteristics but having 2 contact, will that make a difference?(since 2 contact xtals don't have GND pads)
2) We are planning to go with this part number - ABM9-16.000MHZ-10-D-1U-T. Attached the xtal series datasheet fro your reference. Please check and confirm if it is OK to use.

Best Regards,
sr9213

附件:

abm9.pdf

Tue, 2018-06-12 17:09

PM_Dialog

Offline

Last seen:2 hours 36 min ago

加入:2018-02-08 11:03

Hi sr9213,

The main difference is the shielding provided by the additional two ground pads. The 16MHz oscillator is quite sensitive, so we are suggesting a 4 pad xtals. The 32kHz xtal can be a 2 pad device.
We haven’t test this kind of xtal, but it has some differences from the suggested xtals. The Load capacitance is too high (18pF) the shunt capacitance as well (max 7pF). The load capacitance can be chosen to be 10pF. But the shunt capacitance is too high.

Thanks, PM_Dialog

Tue, 2018-06-12 17:46

(Reply to #4) #5

sr9213

Offline

Last seen:1 month 3 weeks ago

加入:2017-09-26 11:30

Hi Dialog,

1) Thanks for clearing my doubt regarding this.
2) We will look into your suggested parts then. Thank you for getting back to us on this.

Regards,
sr9213

Tue, 2018-11-27 13:29

bobspam@free.fr

Offline

Last seen:2 months 2 weeks ago

加入:2018-06-20 08:07

Hello

Can you please confirm to me that ECS-160-10-33-AGM-TR is working with DA14683 ?

Thank you in advance

Tue, 2018-11-27 16:23

PM_Dialog

Offline

Last seen:2 hours 36 min ago

加入:2018-02-08 11:03

Hi bobspam@free.fr,

Hibobspam@free.fr,

I have already replied you in this forum thread. Please have a look:

https://support.dialog-semiconductor.com/forums/post/dialog-smartbond-bluetooth-low-energy-%E2%80%93-hardware-device-reference-designs/da14683-16mhz

Thanks, PM_Dialog

Wed, 2019-04-24 03:18

WENXIANG.ZHANG

Offline

Last seen:1 year 6 months ago

加入:2018-01-31 03:11

about DA14585, the 16M xtal driver level requirment is >100uW, but for XTAL，Is the driver level not as small as possible? why ？

Thu, 2019-04-25 17:23

PM_Dialog

Offline

Last seen:2 hours 36 min ago

加入:2018-02-08 11:03

Hi WENXIANG.ZHANG,

A local Team will reach out to you.

Thanks, PM_Dialog