Moteur de recherche de fiches techniques de composants électroniques
  French  ▼
ALLDATASHEET.FR

X  

AD9953PCB Fiches technique(PDF) 10 Page - Analog Devices

No de pièce AD9953PCB
Description  400 MSPS 14-Bit, 1.8V CMOS Direct Digital Synthesizer
Download  42 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
Logo AD - Analog Devices

AD9953PCB Fiches technique(HTML) 10 Page - Analog Devices

Back Button AD9953PCB Datasheet HTML 6Page - Analog Devices AD9953PCB Datasheet HTML 7Page - Analog Devices AD9953PCB Datasheet HTML 8Page - Analog Devices AD9953PCB Datasheet HTML 9Page - Analog Devices AD9953PCB Datasheet HTML 10Page - Analog Devices AD9953PCB Datasheet HTML 11Page - Analog Devices AD9953PCB Datasheet HTML 12Page - Analog Devices AD9953PCB Datasheet HTML 13Page - Analog Devices AD9953PCB Datasheet HTML 14Page - Analog Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 10 / 42 page
background image
PRELIMINARY TECHNICAL DATA
AD9953
Theory of Operation
Component Blocks
DDS Core
The output frequency (fo) of the DDS is a function of the frequency of system clock (SYSCLK),
the value of the frequency tuning word (FTW), and the capacity of the accumulator (232, in this
case). The exact relationship is given below with fs defined as the frequency of SYSCLK.
fo = (FTW)(fs) / 2
32
{ 0
≤ FTW ≤ 231
fo = fs* ( 1 – ( FTW / 2
32 ) ) { 231 < FTW < 232 -1
The AD9953 frequency tuning word(s) are unsigned numbers, where 80000000(hex) represents
the highest output frequency possible, commonly referred to as the Nyquist frequency. Values
ranging from than 80000001(hex) to FFFFFFFF (hex) will be expressed as aliased frequencies less
than Nyquist. An example using a 3-bit phase accumulator will illustrate this principle. For a
tuning word of 001, the phase accumulator output (PAO) increments from all zeros to all ones and
repeats when the accumulator overflows after clock cycle number 8. For the tuning word of 111,
the phase accumulator output (PAO) decrements from all ones to all zeros and repeats when the
accumulator overflows after clock cycle number 8. While the phase accumulator outputs are
“reversed” with respect to clock cycles, the outputs provide identical inputs to the phase to
amplitude converter, which means the DDS output frequencies are identical.
Mathematically, for a 3-bit accumulator, the following equations apply:
fo = fs* (FTW / 2
3 )
{ 0
≤ FTW ≤ 22
fo = fs* ( 1 – ( FTW / 2
3 ) ) { 22 < FTW < 23 -1
For the 001 frequency tuning word:
Fout = Fs * 1/23 = 1/8*Fs
And for the 111 frequency tuning word:
Fout = Fs * (1 – 7/8) = 1/8*Fs
The value at the output of the Phase Accumulator is translated to an amplitude value via the
COS(x) functional block and routed to the DAC.
REV. PrB 1/30/03
Page 10
Analog Devices, Inc.


Numéro de pièce similaire - AD9953PCB

FabricantNo de pièceFiches techniqueDescription
logo
Analog Devices
AD9953 AD-AD9953 Datasheet
648Kb / 32P
   400MSPS, 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
AD9953YSV AD-AD9953YSV Datasheet
574Kb / 32P
   400 MSPS, 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
REV. A
AD9953YSV-REEL7 AD-AD9953YSV-REEL7 Datasheet
574Kb / 32P
   400 MSPS, 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
REV. A
AD9953YSVZ AD-AD9953YSVZ Datasheet
574Kb / 32P
   400 MSPS, 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
REV. A
AD9953YSVZ AD-AD9953YSVZ Datasheet
648Kb / 32P
   400MSPS, 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
More results

Description similaire - AD9953PCB

FabricantNo de pièceFiches techniqueDescription
logo
Analog Devices
AD9953YSVZ AD-AD9953YSVZ Datasheet
574Kb / 32P
   400 MSPS, 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
REV. A
AD9951 AD-AD9951 Datasheet
825Kb / 28P
   400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
Rev. 0
AD9954 AD-AD9954 Datasheet
1Mb / 36P
   400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
REV. 0
AD9951 AD-AD9951_15 Datasheet
480Kb / 28P
   400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
REV. A
AD9952 AD-AD9952 Datasheet
731Kb / 28P
   400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
REV. 0
AD9952YSVZ AD-AD9952YSVZ Datasheet
569Kb / 28P
   400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
REV. B
AD9953 AD-AD9953_15 Datasheet
574Kb / 32P
   400 MSPS, 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
REV. A
AD9954 AD-AD9954_09 Datasheet
472Kb / 40P
   400 MSPS, 14-Bit, 1.8 V CMOS, Direct Digital Synthesizer
REV. B
AD9951YSVZ AD-AD9951YSVZ Datasheet
480Kb / 28P
   400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
REV. A
AD9952 AD-AD9952_15 Datasheet
569Kb / 28P
   400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
REV. B
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42


Fiches technique Télécharger

Go To PDF Page


Lien URL




Politique de confidentialité
ALLDATASHEET.FR
ALLDATASHEET vous a-t-il été utile ?  [ DONATE ] 

À propos de Alldatasheet   |   Publicité   |   Contactez-nous   |   Politique de confidentialité   |   Echange de liens   |   Fabricants
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
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