 |
поискавой системы для электроныых деталей |
|
|
поискавой системы для электроныых деталей |
|
AD9225ARS датащи(PDF) 21 Page - Analog Devices |
|
|
|||||||||||||||||||||||||||||
AD9225ARS датащи(HTML) 21 Page - Analog Devices |
|
|
21 / 24 page  AD9225 –21– REV. A The digital activity on the AD9225 chip falls into two general categories: correction logic, and output drivers. The internal correction logic draws relatively small surges of current, mainly during the clock transitions. The output drivers draw large current impulses while the output bits are changing. The size and duration of these currents are a function of the load on the output bits: large capacitive loads are to be avoided. Note, the internal correction logic of the AD9225 is referenced to AVDD while the output drivers are referenced to DRVDD. The decoupling shown in Figure 43, 0.1 µF ceramic chip capaci- tors and a 10 µF tantalum are appropriate for a reasonable capacitive load on the digital outputs (typically 20 pF on each pin). Applications involving greater digital loads should consider increasing the digital decoupling proportionally, and/or using external buffers/latches. 0.1 F DRVDD DRVSS AD9225 10 F Figure 43. Digital Supply Decoupling A complete decoupling scheme will also include large tantalum or electrolytic capacitors on the PCB to reduce low frequency ripple to negligible levels. Refer to the AD9225/AD9225EB schematic and layouts in Figures 44–50 for more information regarding the placement of decoupling capacitors. |
|
|
ссылки URL |
| Вашему бизинису помогли Аллдатащит? [ DONATE ] |
Что такое Аллдатащит | реклама | контакт | Конфиденциальность | Ссылка на техническое описание | обмен ссыками | поиск по производителю 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 |
Russian ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
