Electronic Components Datasheet Search |
|
ADS5545 Datasheet(PDF) 45 Page - Texas Instruments |
|
|
ADS5545 Datasheet(HTML) 45 Page - Texas Instruments |
45 / 57 page www.ti.com Board Design Considerations Grounding Supply Decoupling Series Resistors on Data Outputs Exposed Thermal Pad ADS5527 SLWS196A – DECEMBER 2006 – REVISED MAY 2007 A single ground plane is sufficient to give good performance, provided the analog, digital and clock sections of the board are cleanly partitioned. Refer to the EVM User Guide (SLWU028) for details on layout and grounding. As the ADS5527 already includes internal decoupling, minimal external decoupling can be used without loss in performance. Note that decoupling capacitors can help to filter external power supply noise, so the optimum number of capacitors would depend on the actual application. The decoupling capacitors should be placed very close to the converter supply pins. It is recommended to use separate supplies for the analog and digital supply pins to isolate digital switching noise from sensitive analog circuitry. In case only a single 3.3V supply is available, it should be routed first to AVDD. It can then be tapped and isolated with a ferrite bead (or inductor) with decoupling capacitor, before being routed to DRVDD. It is recommended to put series resistors (50 to 100 Ω) on each output line placed very close to the converter pins. This helps to isolate the outputs from seeing large load capacitances and in turn reduces the amount of switching noise. It is necessary to solder the exposed pad at the bottom of the package to a ground plane for best thermal performance. For detailed information, see application notes QFN Layout Guidelines (SLOA122) and QFN/SON PCB Attachment (SLUA271). 45 Submit Documentation Feedback |
Similar Part No. - ADS5545 |
|
Similar Description - ADS5545 |
|
|
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 |