 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
SP5658FKGMP1S Datasheet(PDF) 10 Page - Mitel Networks Corporation |
|
||||||||||||||||||||||||||||||
SP5658FKGMP1S Datasheet(HTML) 10 Page - Mitel Networks Corporation |
|
|
10 / 14 page  10 SP5658 LOOP BANDWIDTH The majority of applications for which the SP5658 is intended require a loop filter bandwidth of between 2kHz and 10kHz. Typically the VCO phase noise will be specified at both 1kHz and10kHz offset. It is common practice to arrange the loop filter bandwidth such that the 1kHz figure lies within the loop bandwidth. Thus the phase noise depends on the synthesiser comparator noise floor, rather than the VCO. The 10kHz offset figure should depend on the VCO providing the loop is designed correctly, and is not underdamped. REFERENCE SOURCE The SP5658 offers optimal LO phase noise performance when operated with a large step size. This is due to the fact that the LO phase noise within the loop bandwidth is: phase comparator noise floor + 20 log 10 LO frequency phase comparator frequency Assuming the phase comparator noise floor is flat irrespective of sampling frequency, this means that the best performance will be achieved when the overall LO to phase comparator division ratio is a minimum. There are two ways of achieving a higher phase comparator sampling frequency:– A) Reduce the division ratio between the reference source and the phase comparator B) use a higher reference source frequency. Approach B) may be preferred for best performance since it is possible that the noise floor of the reference oscillator may degrade the phase comparator performance if the reference division ratio is very small. ( ) |
Similar Part No. - SP5658FKGMP1S |
|
Similar Description - SP5658FKGMP1S |
|
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
