データシートサーチシステム
  Japanese  ▼
ALLDATASHEET.JP

X  

AD9957 データシート(PDF) 10 Page - Analog Devices

部品番号 AD9957
部品情報  1 GSPS Quadrature Digital Upconverter w/18-Bit IQ Data Path and 14-Bit DAC
Download  38 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
メーカー  AD [Analog Devices]
ホームページ  http://www.analog.com
Logo AD - Analog Devices

AD9957 データシート(HTML) 10 Page - Analog Devices

Back Button AD9957 Datasheet HTML 6Page - Analog Devices AD9957 Datasheet HTML 7Page - Analog Devices AD9957 Datasheet HTML 8Page - Analog Devices AD9957 Datasheet HTML 9Page - Analog Devices AD9957 Datasheet HTML 10Page - Analog Devices AD9957 Datasheet HTML 11Page - Analog Devices AD9957 Datasheet HTML 12Page - Analog Devices AD9957 Datasheet HTML 13Page - Analog Devices AD9957 Datasheet HTML 14Page - Analog Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 10 / 38 page
background image
AD9957
PRELIMINARY TECHNICAL DATA
Rev. PrF | Page 10 of 38
MODES OF OPERATION
The AD9957 has three basic operating modes:
• Quadrature modulation mode (default)
• Interpolating DAC mode
• Single-tone mode
The active mode is selected via the QDUC Operating mode bits
(CFR1 <25:24>). The Inverse SINC filter is available in all three
modes.
QUADRATURE MODULATION MODE
A block diagram of the AD9957 operating in the quadrature
modulation mode is shown in Figure 3. In quadrature modula-
tion mode, both I and Q data paths are active and the parallel
data clock (PDCLK) serves to synchronize the input of I/Q data
to the AD9957. One 18-bit I word and one 18-bit Q word to-
gether comprise one internal sample. Each sample propagates
along the internal data pathway in parallel fashion.
The DDS core provides a quadrature (sine and cosine) local
oscillator signal to the quadrature modulator, where the I and Q
data are multiplied by the respective phase of the carrier and
summed together, producing a quadrature-modulated data
stream. This data stream is routed through Inverse SINC filter
(optionally) and the output scaling multiplier and then applied
to the 14-bit DAC which produces the quadrature-modulated
analog output signal. Note: The profile and I/O_UPDATE pins
are also synchronous to the PDCLK.
DDS
cos( t+ )
sin( t+ )
DAC
(14 -b)
FTW
CI
C
(1x -63x)
CI
C
(1x - 63x)
Halfband
Filter s
18
Parallel Da ta
Tim ing &
Cont rol
I/Q In
Inte rna l Clock Timing & Control
PDClk
Seria l I/O
Port
Programming
Regis ters
2
3
Clock
Multiplier
RefClk
RefClk
RA M
Halfband
Filter s
Inv.
CCI
Inv.
CCI
Po wer
Down
Control
DAC
Rs et
Iout
Iout
0
1
0
1
0
1
IQ
0
3
2
1
0
1
x
sin(x)
TxEn
AUX
DAC
(8-b)
I
Q
2
1
2
PW
8
DAC
Gain
2
2
AD9957
(4x)
(4x)
IS
QS
IS
QS
FTW
PW OSF
OSF
Inverse
Sinc Filter
Quadrature
Modulator
Figure 3: Quadrature Modulation Mode
BLACKFIN INTERFACE MODE
A subset of the quadrature modulation mode is the BlackFin
Interface (BFI) mode, which is shown in Figure 4. In this mode
a separate I and Q serial bit stream is applied to the base band
data port. The serial input provides for 16-bit I and Q words
(unlike parallel operation, which uses 18-bit words). The
BlackFin Interface mode includes an additional pair of half
band filters in both the I and Q signal paths, increasing the in-
terpolation of the base band data by 4x relative to the normal
quadrature modulation mode.


同様の部品番号 - AD9957

メーカー部品番号データシート部品情報
logo
Analog Devices
AD9957 AD-AD9957 Datasheet
1Mb / 60P
   1 GSPS Quadrature Digital Upconverter with 18-Bit IQ Data Path and 14-Bit DAC
REV. 0
AD9957 AD-AD9957 Datasheet
1Mb / 62P
   1 GSPS Quadrature Digital Upconverter
AD9957 AD-AD9957 Datasheet
1Mb / 61P
   1 GSPS Quadrature Digital Upconverter
AD9957/PCBZ AD-AD9957/PCBZ Datasheet
1Mb / 60P
   1 GSPS Quadrature Digital Upconverter with 18-Bit IQ Data Path and 14-Bit DAC
REV. 0
AD9957/PCBZ AD-AD9957/PCBZ Datasheet
1Mb / 62P
   1 GSPS Quadrature Digital Upconverter
More results

同様の説明 - AD9957

メーカー部品番号データシート部品情報
logo
Analog Devices
AD9957 AD-AD9957_07 Datasheet
1Mb / 60P
   1 GSPS Quadrature Digital Upconverter with 18-Bit IQ Data Path and 14-Bit DAC
REV. 0
AD9957 AD-AD9957_18 Datasheet
1Mb / 61P
   1 GSPS Quadrature Digital Upconverter
AD9957 AD-AD9957_17 Datasheet
1Mb / 62P
   1 GSPS Quadrature Digital Upconverter
AD9912 AD-AD9912 Datasheet
113Kb / 3P
   1 GSPS Direct Digital Synthesizer w/ 14-bit DAC
Rev. F
AD9857 AD-AD9857 Datasheet
551Kb / 31P
   CMOS 200 MSPS 14-Bit Quadrature Digital Upconverter
REV. 0
AD9857 AD-AD9857_04 Datasheet
1Mb / 40P
   CMOS 200 MSPS 14-Bit Quadrature Digital Upconverter
REV. C
AD9857 AD-AD9857_17 Datasheet
893Kb / 41P
   CMOS 200 MSPS 14-Bit Quadrature Digital Upconverter
AD9912BCPZ AD-AD9912BCPZ Datasheet
649Kb / 40P
   1 GSPS Direct Digital Synthesizer with 14-Bit DAC
Rev. F
AD9912ABCPZ AD-AD9912ABCPZ Datasheet
649Kb / 40P
   1 GSPS Direct Digital Synthesizer with 14-Bit DAC
Rev. F
AD9857 AD-AD9857_15 Datasheet
1Mb / 40P
   CMOS 200 MSPS 14-Bit Quadrature Digital Upconverter
REV. C
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


データシート ダウンロード

Go To PDF Page


リンク URL




プライバシーポリシー
ALLDATASHEET.JP
ALLDATASHEETはお客様のビジネスに役立ちますか?  [ DONATE ] 

Alldatasheetは   |   広告   |   お問い合わせ   |   プライバシーポリシー   |   リンク交換   |   メーカーリスト
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