 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
ICS9DB202CGLF Datasheet(PDF) 7 Page - Integrated Device Technology |
|
||||||||||||||||||||||||||||||
ICS9DB202CGLF Datasheet(HTML) 7 Page - Integrated Device Technology |
|
|
7 / 13 page  IDT™ / ICS™ PCI EXPRESS JITTER ATTENUATOR 7 ICS9DB202CG REV B JULY 14, 2006 ICS9DB202 PCI EXPRESS JITTER ATTENUATOR APPLICATION INFORMATION Figure 2 shows how the differential input can be wired to accept single ended levels. The reference voltage V_REF = V DD /2 is generated by the bias resistors R1, R2 and C1. This bias circuit should be located as close as possible to the input pin. The ratio FIGURE 2. SINGLE ENDED SIGNAL DRIVING DIFFERENTIAL INPUT WIRING THE DIFFERENTIAL INPUT TO ACCEPT SINGLE ENDED LEVELS of R1 and R2 might need to be adjusted to position the V_REF in the center of the input voltage swing. For example, if the input clock swing is only 2.5V and V DD = 3.3V, V_REF should be 1.25V and R2/R1 = 0.609. V_REF R1 1K C1 0.1u R2 1K Single Ended Clock Input CLK nCLK VDD POWER SUPPLY FILTERING TECHNIQUES As in any high speed analog circuitry, the power supply pins are vulnerable to random noise. The ICS9DB202 provides separate power supplies to isolate any high switching noise from the out- puts to the internal PLL. V DD and VDDA should be individually con- nected to the power supply plane through vias, and bypass ca- pacitors should be used for each pin. To achieve optimum jitter performance, power supply isolation is required. Figure 1 illus- trates how a 24 Ω resistor along with a 10µF and a .01µF bypass capacitor should be connected to each V DDA pin. The 10Ω resis- tor can also be replaced by a ferrite bead. FIGURE 1. POWER SUPPLY FILTERING 24 Ω V DDA 10 µF .01 µF 3.3V .01 µF V DD |
Similar Part No. - ICS9DB202CGLF |
|
Similar Description - ICS9DB202CGLF |
|
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.NET |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | 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
